introduction paragraph outline research paper

How to Write a Research Paper Introduction (with Examples)

The research paper introduction section, along with the Title and Abstract, can be considered the face of any research paper. The following article is intended to guide you in organizing and writing the research paper introduction for a quality academic article or dissertation.

The research paper introduction aims to present the topic to the reader. A study will only be accepted for publishing if you can ascertain that the available literature cannot answer your research question. So it is important to ensure that you have read important studies on that particular topic, especially those within the last five to ten years, and that they are properly referenced in this section. 1 What should be included in the research paper introduction is decided by what you want to tell readers about the reason behind the research and how you plan to fill the knowledge gap. The best research paper introduction provides a systemic review of existing work and demonstrates additional work that needs to be done. It needs to be brief, captivating, and well-referenced; a well-drafted research paper introduction will help the researcher win half the battle.

The introduction for a research paper is where you set up your topic and approach for the reader. It has several key goals:

• Present your research topic
• Capture reader interest
• Summarize existing research
• Position your own approach
• Define your specific research problem and problem statement
• Highlight the novelty and contributions of the study
• Give an overview of the paper’s structure

The research paper introduction can vary in size and structure depending on whether your paper presents the results of original empirical research or is a review paper. Some research paper introduction examples are only half a page while others are a few pages long. In many cases, the introduction will be shorter than all of the other sections of your paper; its length depends on the size of your paper as a whole.

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Table of Contents

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The introduction in a research paper is placed at the beginning to guide the reader from a broad subject area to the specific topic that your research addresses. They present the following information to the reader

• Scope: The topic covered in the research paper
• Context: Background of your topic
• Importance: Why your research matters in that particular area of research and the industry problem that can be targeted

The research paper introduction conveys a lot of information and can be considered an essential roadmap for the rest of your paper. A good introduction for a research paper is important for the following reasons:

• It stimulates your reader’s interest: A good introduction section can make your readers want to read your paper by capturing their interest. It informs the reader what they are going to learn and helps determine if the topic is of interest to them.
• It helps the reader understand the research background: Without a clear introduction, your readers may feel confused and even struggle when reading your paper. A good research paper introduction will prepare them for the in-depth research to come. It provides you the opportunity to engage with the readers and demonstrate your knowledge and authority on the specific topic.
• It explains why your research paper is worth reading: Your introduction can convey a lot of information to your readers. It introduces the topic, why the topic is important, and how you plan to proceed with your research.
• It helps guide the reader through the rest of the paper: The research paper introduction gives the reader a sense of the nature of the information that will support your arguments and the general organization of the paragraphs that will follow. It offers an overview of what to expect when reading the main body of your paper.

What are the parts of introduction in the research?

A good research paper introduction section should comprise three main elements: 2

• What is known: This sets the stage for your research. It informs the readers of what is known on the subject.
• What is lacking: This is aimed at justifying the reason for carrying out your research. This could involve investigating a new concept or method or building upon previous research.
• What you aim to do: This part briefly states the objectives of your research and its major contributions. Your detailed hypothesis will also form a part of this section.

How to write a research paper introduction?

The first step in writing the research paper introduction is to inform the reader what your topic is and why it’s interesting or important. This is generally accomplished with a strong opening statement. The second step involves establishing the kinds of research that have been done and ending with limitations or gaps in the research that you intend to address. Finally, the research paper introduction clarifies how your own research fits in and what problem it addresses. If your research involved testing hypotheses, these should be stated along with your research question. The hypothesis should be presented in the past tense since it will have been tested by the time you are writing the research paper introduction.

The following key points, with examples, can guide you when writing the research paper introduction section:

• Highlight the importance of the research field or topic
• Describe the background of the topic
• Present an overview of current research on the topic

Example: The inclusion of experiential and competency-based learning has benefitted electronics engineering education. Industry partnerships provide an excellent alternative for students wanting to engage in solving real-world challenges. Industry-academia participation has grown in recent years due to the need for skilled engineers with practical training and specialized expertise. However, from the educational perspective, many activities are needed to incorporate sustainable development goals into the university curricula and consolidate learning innovation in universities.

• Reveal a gap in existing research or oppose an existing assumption
• Formulate the research question

Example: There have been plausible efforts to integrate educational activities in higher education electronics engineering programs. However, very few studies have considered using educational research methods for performance evaluation of competency-based higher engineering education, with a focus on technical and or transversal skills. To remedy the current need for evaluating competencies in STEM fields and providing sustainable development goals in engineering education, in this study, a comparison was drawn between study groups without and with industry partners.

• State the purpose of your study
• Highlight the key characteristics of your study
• Describe important results
• Highlight the novelty of the study.
• Offer a brief overview of the structure of the paper.

Example: The study evaluates the main competency needed in the applied electronics course, which is a fundamental core subject for many electronics engineering undergraduate programs. We compared two groups, without and with an industrial partner, that offered real-world projects to solve during the semester. This comparison can help determine significant differences in both groups in terms of developing subject competency and achieving sustainable development goals.

Write a Research Paper Introduction in Minutes with Paperpal

Paperpal Copilot is a generative AI-powered academic writing assistant. It’s trained on millions of published scholarly articles and over 20 years of STM experience. Paperpal Copilot helps authors write better and faster with:

• Real-time writing suggestions
• In-depth checks for language and grammar correction
• Paraphrasing to add variety, ensure academic tone, and trim text to meet journal limits

With Paperpal Copilot, create a research paper introduction effortlessly. In this step-by-step guide, we’ll walk you through how Paperpal transforms your initial ideas into a polished and publication-ready introduction.

How to use Paperpal to write the Introduction section

Step 1: Sign up on Paperpal and click on the Copilot feature, under this choose Outlines > Research Article > Introduction

Step 2: Add your unstructured notes or initial draft, whether in English or another language, to Paperpal, which is to be used as the base for your content.

Step 3: Fill in the specifics, such as your field of study, brief description or details you want to include, which will help the AI generate the outline for your Introduction.

Step 4: Use this outline and sentence suggestions to develop your content, adding citations where needed and modifying it to align with your specific research focus.

Step 5: Turn to Paperpal’s granular language checks to refine your content, tailor it to reflect your personal writing style, and ensure it effectively conveys your message.

You can use the same process to develop each section of your article, and finally your research paper in half the time and without any of the stress.

The purpose of the research paper introduction is to introduce the reader to the problem definition, justify the need for the study, and describe the main theme of the study. The aim is to gain the reader’s attention by providing them with necessary background information and establishing the main purpose and direction of the research.

The length of the research paper introduction can vary across journals and disciplines. While there are no strict word limits for writing the research paper introduction, an ideal length would be one page, with a maximum of 400 words over 1-4 paragraphs. Generally, it is one of the shorter sections of the paper as the reader is assumed to have at least a reasonable knowledge about the topic. 2 For example, for a study evaluating the role of building design in ensuring fire safety, there is no need to discuss definitions and nature of fire in the introduction; you could start by commenting upon the existing practices for fire safety and how your study will add to the existing knowledge and practice.

When deciding what to include in the research paper introduction, the rest of the paper should also be considered. The aim is to introduce the reader smoothly to the topic and facilitate an easy read without much dependency on external sources. 3 Below is a list of elements you can include to prepare a research paper introduction outline and follow it when you are writing the research paper introduction. Topic introduction: This can include key definitions and a brief history of the topic. Research context and background: Offer the readers some general information and then narrow it down to specific aspects. Details of the research you conducted: A brief literature review can be included to support your arguments or line of thought. Rationale for the study: This establishes the relevance of your study and establishes its importance. Importance of your research: The main contributions are highlighted to help establish the novelty of your study Research hypothesis: Introduce your research question and propose an expected outcome. Organization of the paper: Include a short paragraph of 3-4 sentences that highlights your plan for the entire paper

Cite only works that are most relevant to your topic; as a general rule, you can include one to three. Note that readers want to see evidence of original thinking. So it is better to avoid using too many references as it does not leave much room for your personal standpoint to shine through. Citations in your research paper introduction support the key points, and the number of citations depend on the subject matter and the point discussed. If the research paper introduction is too long or overflowing with citations, it is better to cite a few review articles rather than the individual articles summarized in the review. A good point to remember when citing research papers in the introduction section is to include at least one-third of the references in the introduction.

The literature review plays a significant role in the research paper introduction section. A good literature review accomplishes the following: Introduces the topic – Establishes the study’s significance – Provides an overview of the relevant literature – Provides context for the study using literature – Identifies knowledge gaps However, remember to avoid making the following mistakes when writing a research paper introduction: Do not use studies from the literature review to aggressively support your research Avoid direct quoting Do not allow literature review to be the focus of this section. Instead, the literature review should only aid in setting a foundation for the manuscript.

Remember the following key points for writing a good research paper introduction: 4

• Avoid stuffing too much general information: Avoid including what an average reader would know and include only that information related to the problem being addressed in the research paper introduction. For example, when describing a comparative study of non-traditional methods for mechanical design optimization, information related to the traditional methods and differences between traditional and non-traditional methods would not be relevant. In this case, the introduction for the research paper should begin with the state-of-the-art non-traditional methods and methods to evaluate the efficiency of newly developed algorithms.
• Avoid packing too many references: Cite only the required works in your research paper introduction. The other works can be included in the discussion section to strengthen your findings.
• Avoid extensive criticism of previous studies: Avoid being overly critical of earlier studies while setting the rationale for your study. A better place for this would be the Discussion section, where you can highlight the advantages of your method.
• Avoid describing conclusions of the study: When writing a research paper introduction remember not to include the findings of your study. The aim is to let the readers know what question is being answered. The actual answer should only be given in the Results and Discussion section.

To summarize, the research paper introduction section should be brief yet informative. It should convince the reader the need to conduct the study and motivate him to read further. If you’re feeling stuck or unsure, choose trusted AI academic writing assistants like Paperpal to effortlessly craft your research paper introduction and other sections of your research article.

1. Jawaid, S. A., & Jawaid, M. (2019). How to write introduction and discussion. Saudi Journal of Anaesthesia, 13(Suppl 1), S18.

2. Dewan, P., & Gupta, P. (2016). Writing the title, abstract and introduction: Looks matter!. Indian pediatrics, 53, 235-241.

3. Cetin, S., & Hackam, D. J. (2005). An approach to the writing of a scientific Manuscript1. Journal of Surgical Research, 128(2), 165-167.

4. Bavdekar, S. B. (2015). Writing introduction: Laying the foundations of a research paper. Journal of the Association of Physicians of India, 63(7), 44-6.

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Starting Your Research Paper: Writing an Introductory Paragraph

• Choosing Your Topic
• Define Keywords
• Planning Your Paper
• Writing an Introductory Paragraph

The Dreaded Introductory Paragraph

Writing the introductory paragraph can be a frustrating and slow process -- but it doesn't have to be.  If you planned your paper out, then most of the introductory paragraph is already written.  Now you just need a beginning and an end.

Here's an introductory paragraph for a paper I wrote.  I started the paper with a factoid, then presented each main point of my paper and then ended with my thesis statement.

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How to Write an Introduction for a Research Paper

Table of Contents

Writing an introduction for a research paper is a critical element of your paper, but it can seem challenging to encapsulate enormous amount of information into a concise form. The introduction of your research paper sets the tone for your research and provides the context for your study. In this article, we will guide you through the process of writing an effective introduction that grabs the reader's attention and captures the essence of your research paper.

Understanding the Purpose of a Research Paper Introduction

The introduction acts as a road map for your research paper, guiding the reader through the main ideas and arguments. The purpose of the introduction is to present your research topic to the readers and provide a rationale for why your study is relevant. It helps the reader locate your research and its relevance in the broader field of related scientific explorations. Additionally, the introduction should inform the reader about the objectives and scope of your study, giving them an overview of what to expect in the paper. By including a comprehensive introduction, you establish your credibility as an author and convince the reader that your research is worth their time and attention.

Key Elements to Include in Your Introduction

When writing your research paper introduction, there are several key elements you should include to ensure it is comprehensive and informative.

• A hook or attention-grabbing statement to capture the reader's interest.  It can be a thought-provoking question, a surprising statistic, or a compelling anecdote that relates to your research topic.
• A brief overview of the research topic and its significance. By highlighting the gap in existing knowledge or the problem your research aims to address, you create a compelling case for the relevance of your study.
• A clear research question or problem statement. This serves as the foundation of your research and guides the reader in understanding the unique focus of your study. It should be concise, specific, and clearly articulated.
• An outline of the paper's structure and main arguments, to help the readers navigate through the paper with ease.

Preparing to Write Your Introduction

Before diving into writing your introduction, it is essential to prepare adequately. This involves 3 important steps:

• Conducting Preliminary Research: Immerse yourself in the existing literature to develop a clear research question and position your study within the academic discourse.
• Identifying Your Thesis Statement: Define a specific, focused, and debatable thesis statement, serving as a roadmap for your paper.
• Considering Broader Context: Reflect on the significance of your research within your field, understanding its potential impact and contribution.

By engaging in these preparatory steps, you can ensure that your introduction is well-informed, focused, and sets the stage for a compelling research paper.

Structuring Your Introduction

Now that you have prepared yourself to tackle the introduction, it's time to structure it effectively. A well-structured introduction will engage the reader from the beginning and provide a logical flow to your research paper.

Starting with a Hook

Begin your introduction with an attention-grabbing hook that captivates the reader's interest. This hook serves as a way to make your introduction more engaging and compelling. For example, if you are writing a research paper on the impact of climate change on biodiversity, you could start your introduction with a statistic about the number of species that have gone extinct due to climate change. This will immediately grab the reader's attention and make them realize the urgency and importance of the topic.

Introducing Your Topic

Provide a brief overview, which should give the reader a general understanding of the subject matter and its significance. Explain the importance of the topic and its relevance to the field. This will help the reader understand why your research is significant and why they should continue reading. Continuing with the example of climate change and biodiversity, you could explain how climate change is one of the greatest threats to global biodiversity, how it affects ecosystems, and the potential consequences for both wildlife and human populations. By providing this context, you are setting the stage for the rest of your research paper and helping the reader understand the importance of your study.

Presenting Your Thesis Statement

The thesis statement should directly address your research question and provide a preview of the main arguments or findings discussed in your paper. Make sure your thesis statement is clear, concise, and well-supported by the evidence you will present in your research paper. By presenting a strong and focused thesis statement, you are providing the reader with the information they could anticipate in your research paper. This will help them understand the purpose and scope of your study and will make them more inclined to continue reading.

Writing Techniques for an Effective Introduction

When crafting an introduction, it is crucial to pay attention to the finer details that can elevate your writing to the next level. By utilizing specific writing techniques, you can captivate your readers and draw them into your research journey.

Using Clear and Concise Language

One of the most important writing techniques to employ in your introduction is the use of clear and concise language. By choosing your words carefully, you can effectively convey your ideas to the reader. It is essential to avoid using jargon or complex terminology that may confuse or alienate your audience. Instead, focus on communicating your research in a straightforward manner to ensure that your introduction is accessible to both experts in your field and those who may be new to the topic. This approach allows you to engage a broader audience and make your research more inclusive.

Establishing the Relevance of Your Research

One way to establish the relevance of your research is by highlighting how it fills a gap in the existing literature. Explain how your study addresses a significant research question that has not been adequately explored. By doing this, you demonstrate that your research is not only unique but also contributes to the broader knowledge in your field. Furthermore, it is important to emphasize the potential impact of your research. Whether it is advancing scientific understanding, informing policy decisions, or improving practical applications, make it clear to the reader how your study can make a difference.

By employing these two writing techniques in your introduction, you can effectively engage your readers. Take your time to craft an introduction that is both informative and captivating, leaving your readers eager to delve deeper into your research.

Revising and Polishing Your Introduction

Once you have written your introduction, it is crucial to revise and polish it to ensure that it effectively sets the stage for your research paper.

Self-Editing Techniques

Review your introduction for clarity, coherence, and logical flow. Ensure each paragraph introduces a new idea or argument with smooth transitions.

Check for grammatical errors, spelling mistakes, and awkward sentence structures.

Ensure that your introduction aligns with the overall tone and style of your research paper.

Seeking Feedback for Improvement

Consider seeking feedback from peers, colleagues, or your instructor. They can provide valuable insights and suggestions for improving your introduction. Be open to constructive criticism and use it to refine your introduction and make it more compelling for the reader.

Writing an introduction for a research paper requires careful thought and planning. By understanding the purpose of the introduction, preparing adequately, structuring effectively, and employing writing techniques, you can create an engaging and informative introduction for your research. Remember to revise and polish your introduction to ensure that it accurately represents the main ideas and arguments in your research paper. With a well-crafted introduction, you will capture the reader's attention and keep them inclined to your paper.

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Writing a Research Paper Introduction (with 3 Examples)

Nail your research paper's introduction! Learn to captivate and inform readers from the start—our guide shows how!

TABLE OF CONTENTS

A catchy and informative introduction is essential in academic writing, especially if you want your readers to have background information about your paper. However, writing an interesting and informative introduction can sometimes be a time-consuming and tiring process. If you don't know where to start when crafting an introduction, no need to worry - we've got you covered!

In this article, we will explain step by step what an introduction is in academic writing and how to write it!

Ready? Let's start!

• An introduction is a paragraph that provides information about your entire paper and aims to attract and inform the reader.
• Before writing an introduction or even starting your paper, you need to research academic sources.
• The first one or two sentences of an introduction paragraph should be a hook to attract the reader's attention.
• Afterwards, you need to prepare the reader for your argument by giving background information about your topic.
• Finally, you should state your argument about your topic with a thesis statement.
• If you are writing a longer paper, you can inform your readers about the map of your paper.
• If you are looking for an AI assistant to support you throughout your writing process, TextCortex is designed for you with its advanced features.

What is an Introduction in a research paper?

In any academic writing, including essays and research papers, an introduction is the first paragraph that the reader will encounter. This paragraph should both attract the reader's attention and give them the necessary information about the paper. In any academic paper, the introduction paragraph constitutes 10% of the paper's total word count. For example, if you are preparing a 3,000-word paper, your introduction paragraph should consist of approximately 300 words. You should also write sentences within these 300 words that will attract the reader's attention and provide them with information about the paper.

Importance of an Introduction Paragraph

The biggest function of an introduction paragraph is to prepare the reader for the author's thesis statement. A traditional introduction paragraph begins with a few sentences or questions that will catch the reader's attention. After attracting the reader's attention, necessary background information on the subject is given. Finally, the author explains to the readers what the whole paper is about by stating the thesis. A thesis statement is the final sentence that summarizes the main points of your paper and conveys your claim.

First Things First: Preliminary Research

When working on any academic writing type, it is essential to start by researching your topic thoroughly before beginning to type. What sets academic writing apart from other writing types is the requirement for it to be written using accurate information from reliable sources.

Researching academic sources can be a time-consuming and unnecessary process. One has to read through hundreds of pages, review dozens of articles and verify the accuracy of each source. However, if you're looking to reduce your workload and maximize efficiency by automating repetitive tasks such as literature review, ZenoChat is the perfect solution for you. With its web search feature, ZenoChat can use the entire internet as a data source. Additionally, by activating the "scholar" option of the ZenoChat web search feature, you can ensure that it only uses academic sources when generating output.

How to Create an Introduction for Academic Writing?

Creating an introduction paragraph that is interesting, informative, and conveys your thesis is an easier process than it seems. As long as you have sufficient information about your topic and an outline , you can write engaging introductions by following a few simple steps. Let's take a closer look at how to write an introduction for academic writing.

1-) Start with a Catchy Hook

Your first sentence is one of the factors that most influence a reader's decision to read your paper. This sentence determines the tone of your paper and attracts the reader's attention. For this reason, we recommend that you start your introduction paragraph with a strong and catchy hook sentence.

• Avoid long and complex sentences
• Use clear and concise sentences
• Write a sentence that will spark the reader's curiosity
• You can ask questions that will encourage the reader to read the remaining paragraph
• Avoid fact or overly broad sentences
• Avoid using dictionary definitions as your hook

2-) Give Background Information

After writing a strong hook sentence, you need to provide basic information about your topic so that the reader can understand what they will learn about when they read your paper. In this section, you can benefit from opinions that support or oppose your argument. Additionally, this section should refer to the body paragraphs of your writing.

• You can write a background information sentence for each body paragraph.
• The information here should be concise and compact
• Avoid talking about your evidence and results unless necessary.

3-) State Your Thesis 

After attracting the reader's attention and providing background information, it is time to present your approach and argument towards the topic with a thesis statement. A thesis statement usually comprises one or two sentences and communicates the paper's argument to the reader. A well-written thesis statement should express your stance on the topic.

• Avoid merely stating a fact
• Claim your argument

4-) Tell Reader About Your Paper

Although you need to move on to body paragraphs after the thesis statement in short papers, it will be useful to add a few sentences that will guide the reader in your longer papers. This way, your readers can better understand which arguments they will encounter on which pages and the course of your paper. That leads the reader to clearly understand and follow your content.

Let’s Wrap it Up

Writing an interesting and informative introduction is usually a long process that requires a lot of rewriting. You may need to rewrite a sentence dozens of times so that your words and sentences clearly describe your paper and argument. Fortunately, you can generate state-of-the-art introductions using AI tools and use them with a little editing.

When it comes to text generation, paraphrasing, and grammar & spelling checking, TextCortex is the way to go with its advanced LLMs and customization options. With TextCortex, you can generate all writing types, including introduction, from scratch, rewrite your existing texts, change their tone of voice, or fix their grammar. TextCortex is available as a web application and browser extension. The TextCortex browser extension is integrated with 30,000+ websites and apps. So, you can complete your AI-driven writing tasks anywhere and anytime.

Let's examine a few sample introductions generated by TextCortex.

Example Introduction #1

“Should social media platforms be banned from collecting their users' data?”

Example Introduction #2

“Do electric vehicles decrease overall emissions?”

Example Introduction #3

“Is graffiti an act of vandalism or the creation of art?”

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How to Write an Introduction for a Research Paper

How to write an introduction for a research paper? Eventually (and with practice) all writers will develop their own strategy for writing the perfect introduction for a research paper. Once you are comfortable with writing, you will probably find your own, but coming up with a good strategy can be tough for beginning writers.

The Purpose of an Introduction

Your opening paragraphs, phrases for introducing thesis statements, research paper introduction examples, using the introduction to map out your research paper.

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• First write your thesis.Your thesis should state the main idea in specific terms.
• After you have a working thesis, tackle the body of your paper before you write the rest of the introduction. Each paragraph in the body should explore one specific topic that proves, or summarizes your thesis. Writing is a thinking process. Once you have worked your way through that process by writing the body of the paper, you will have an intimate understanding of how you are supporting your thesis. After you have written the body paragraphs, go back and rewrite your thesis to make it more specific and to connect it to the topics you addressed in the body paragraph.
• Revise your introduction several times, saving each revision. Be sure your introduction previews the topics you are presenting in your paper. One way of doing this is to use keywords from the topic sentences in each paragraph to introduce, or preview, the topics in your introduction.This “preview” will give your reader a context for understanding how you will make your case.
• Experiment by taking different approaches to your thesis with every revision you make. Play with the language in the introduction. Strike a new tone. Go back and compare versions. Then pick the one that works most effectively with the body of your research paper.
• Do not try to pack everything you want to say into your introduction. Just as your introduction should not be too short, it should also not be too long. Your introduction should be about the same length as any other paragraph in your research paper. Let the content—what you have to say—dictate the length.

The first page of your research paper should draw the reader into the text. It is the paper’s most important page and, alas, often the worst written. There are two culprits here and effective ways to cope with both of them.

First, the writer is usually straining too hard to say something terribly BIG and IMPORTANT about the thesis topic. The goal is worthy, but the aim is unrealistically high. The result is often a muddle of vague platitudes rather than a crisp, compelling introduction to the thesis. Want a familiar example? Listen to most graduation speakers. Their goal couldn’t be loftier: to say what education means and to tell an entire football stadium how to live the rest of their lives. The results are usually an avalanche of clichés and sodden prose.

The second culprit is bad timing. The opening and concluding paragraphs are usually written late in the game, after the rest of the thesis is finished and polished. There’s nothing wrong with writing these sections last. It’s usually the right approach since you need to know exactly what you are saying in the substantive middle sections of the thesis before you can introduce them effectively or draw together your findings. But having waited to write the opening and closing sections, you need to review and edit them several times to catch up. Otherwise, you’ll putting the most jagged prose in the most tender spots. Edit and polish your opening paragraphs with extra care. They should draw readers into the paper.

After you’ve done some extra polishing, I suggest a simple test for the introductory section. As an experiment, chop off the first few paragraphs. Let the paper begin on, say, paragraph 2 or even page 2. If you don’t lose much, or actually gain in clarity and pace, then you’ve got a problem.

There are two solutions. One is to start at this new spot, further into the text. After all, that’s where you finally gain traction on your subject. That works best in some cases, and we occasionally suggest it. The alternative, of course, is to write a new opening that doesn’t flop around, saying nothing.

What makes a good opening? Actually, they come in several flavors. One is an intriguing story about your topic. Another is a brief, compelling quote. When you run across them during your reading, set them aside for later use. Don’t be deterred from using them because they “don’t seem academic enough.” They’re fine as long as the rest of the paper doesn’t sound like you did your research in People magazine. The third, and most common, way to begin is by stating your main questions, followed by a brief comment about why they matter.

Whichever opening you choose, it should engage your readers and coax them to continue. Having done that, you should give them a general overview of the project—the main issues you will cover, the material you will use, and your thesis statement (that is, your basic approach to the topic). Finally, at the end of the introductory section, give your readers a brief road map, showing how the paper will unfold. How you do that depends on your topic but here are some general suggestions for phrase choice that may help:

• This analysis will provide …
• This paper analyzes the relationship between …
• This paper presents an analysis of …
• This paper will argue that …
• This topic supports the argument that…
• Research supports the opinion that …
• This paper supports the opinion that …
• An interpretation of the facts indicates …
• The results of this experiment show …
• The results of this research show …

Comparisons/Contrasts

• A comparison will show that …
• By contrasting the results,we see that …
• This paper examines the advantages and disadvantages of …

Definitions/Classifications

• This paper will provide a guide for categorizing the following:…
• This paper provides a definition of …
• This paper explores the meaning of …
• This paper will discuss the implications of …
• A discussion of this topic reveals …
• The following discussion will focus on …

Description

• This report describes…
• This report will illustrate…
• This paper provides an illustration of …

Process/Experimentation

• This paper will identify the reasons behind…
• The results of the experiment show …
• The process revealed that …
• This paper theorizes…
• This paper presents the theory that …
• In theory, this indicates that …

Quotes, anecdotes, questions, examples, and broad statements—all of them can used successfully to write an introduction for a research paper. It’s instructive to see them in action, in the hands of skilled academic writers.

Let’s begin with David M. Kennedy’s superb history, Freedom from Fear: The American People in Depression and War, 1929–1945 . Kennedy begins each chapter with a quote, followed by his text. The quote above chapter 1 shows President Hoover speaking in 1928 about America’s golden future. The text below it begins with the stock market collapse of 1929. It is a riveting account of just how wrong Hoover was. The text about the Depression is stronger because it contrasts so starkly with the optimistic quotation.

“We in America today are nearer the final triumph over poverty than ever before in the history of any land.”—Herbert Hoover, August 11, 1928 Like an earthquake, the stock market crash of October 1929 cracked startlingly across the United States, the herald of a crisis that was to shake the American way of life to its foundations. The events of the ensuing decade opened a fissure across the landscape of American history no less gaping than that opened by the volley on Lexington Common in April 1775 or by the bombardment of Sumter on another April four score and six years later. The ratcheting ticker machines in the autumn of 1929 did not merely record avalanching stock prices. In time they came also to symbolize the end of an era. (David M. Kennedy, Freedom from Fear: The American People in Depression and War, 1929–1945 . New York: Oxford University Press, 1999, p. 10)

Kennedy has exciting, wrenching material to work with. John Mueller faces the exact opposite problem. In Retreat from Doomsday: The Obsolescence of Major War , he is trying to explain why Great Powers have suddenly stopped fighting each other. For centuries they made war on each other with devastating regularity, killing millions in the process. But now, Mueller thinks, they have not just paused; they have stopped permanently. He is literally trying to explain why “nothing is happening now.” That may be an exciting topic intellectually, it may have great practical significance, but “nothing happened” is not a very promising subject for an exciting opening paragraph. Mueller manages to make it exciting and, at the same time, shows why it matters so much. Here’s his opening, aptly entitled “History’s Greatest Nonevent”:

On May 15, 1984, the major countries of the developed world had managed to remain at peace with each other for the longest continuous stretch of time since the days of the Roman Empire. If a significant battle in a war had been fought on that day, the press would have bristled with it. As usual, however, a landmark crossing in the history of peace caused no stir: the most prominent story in the New York Times that day concerned the saga of a manicurist, a machinist, and a cleaning woman who had just won a big Lotto contest. This book seeks to develop an explanation for what is probably the greatest nonevent in human history. (John Mueller, Retreat from Doomsday: The Obsolescence of Major War . New York: Basic Books, 1989, p. 3)

In the space of a few sentences, Mueller sets up his puzzle and reveals its profound human significance. At the same time, he shows just how easy it is to miss this milestone in the buzz of daily events. Notice how concretely he does that. He doesn’t just say that the New York Times ignored this record setting peace. He offers telling details about what they covered instead: “a manicurist, a machinist, and a cleaning woman who had just won a big Lotto contest.” Likewise, David Kennedy immediately entangles us in concrete events: the stunning stock market crash of 1929. These are powerful openings that capture readers’ interests, establish puzzles, and launch narratives.

Sociologist James Coleman begins in a completely different way, by posing the basic questions he will study. His ambitious book, Foundations of Social Theory , develops a comprehensive theory of social life, so it is entirely appropriate for him to begin with some major questions. But he could just as easily have begun with a compelling story or anecdote. He includes many of them elsewhere in his book. His choice for the opening, though, is to state his major themes plainly and frame them as a paradox. Sociologists, he says, are interested in aggregate behavior—how people act in groups, organizations, or large numbers—yet they mostly examine individuals:

A central problem in social science is that of accounting for the function of some kind of social system. Yet in most social research, observations are not made on the system as a whole, but on some part of it. In fact, the natural unit of observation is the individual person…  This has led to a widening gap between theory and research… (James S. Coleman, Foundations of Social Theory . Cambridge, MA: Harvard University Press, 1990, pp. 1–2)

After expanding on this point, Coleman explains that he will not try to remedy the problem by looking solely at groups or aggregate-level data. That’s a false solution, he says, because aggregates don’t act; individuals do. So the real problem is to show the links between individual actions and aggregate outcomes, between the micro and the macro.

The major problem for explanations of system behavior based on actions and orientations at a level below that of the system [in this case, on individual-level actions] is that of moving from the lower level to the system level. This has been called the micro-to-macro problem, and it is pervasive throughout the social sciences. (Coleman, Foundations of Social Theory , p. 6)

Explaining how to deal with this “micro-to-macro problem” is the central issue of Coleman’s book, and he announces it at the beginning.

Coleman’s theory-driven opening stands at the opposite end of the spectrum from engaging stories or anecdotes, which are designed to lure the reader into the narrative and ease the path to a more analytic treatment later in the text. Take, for example, the opening sentences of Robert L. Herbert’s sweeping study Impressionism: Art, Leisure, and Parisian Society : “When Henry Tuckerman came to Paris in 1867, one of the thousands of Americans attracted there by the huge international exposition, he was bowled over by the extraordinary changes since his previous visit twenty years before.” (Robert L. Herbert, Impressionism: Art, Leisure, and Parisian Society . New Haven, CT: Yale University Press, 1988, p. 1.) Herbert fills in the evocative details to set the stage for his analysis of the emerging Impressionist art movement and its connection to Parisian society and leisure in this period.

David Bromwich writes about Wordsworth, a poet so familiar to students of English literature that it is hard to see him afresh, before his great achievements, when he was just a young outsider starting to write. To draw us into Wordsworth’s early work, Bromwich wants us to set aside our entrenched images of the famous mature poet and see him as he was in the 1790s, as a beginning writer on the margins of society. He accomplishes this ambitious task in the opening sentences of Disowned by Memory: Wordsworth’s Poetry of the 1790s :

Wordsworth turned to poetry after the revolution to remind himself that he was still a human being. It was a curious solution, to a difficulty many would not have felt. The whole interest of his predicament is that he did feel it. Yet Wordsworth is now so established an eminence—his name so firmly fixed with readers as a moralist of self-trust emanating from complete self-security—that it may seem perverse to imagine him as a criminal seeking expiation. Still, that is a picture we get from The Borderers and, at a longer distance, from “Tintern Abbey.” (David Bromwich, Disowned by Memory: Wordsworth’s Poetry of the 1790s . Chicago: University of Chicago Press, 1998, p. 1)

That’s a wonderful opening! Look at how much Bromwich accomplishes in just a few words. He not only prepares the way for analyzing Wordsworth’s early poetry; he juxtaposes the anguished young man who wrote it to the self-confident, distinguished figure he became—the eminent man we can’t help remembering as we read his early poetry.

Let us highlight a couple of other points in this passage because they illustrate some intelligent writing choices. First, look at the odd comma in this sentence: “It was a curious solution, to a difficulty many would not have felt.” Any standard grammar book would say that comma is wrong and should be omitted. Why did Bromwich insert it? Because he’s a fine writer, thinking of his sentence rhythm and the point he wants to make. The comma does exactly what it should. It makes us pause, breaking the sentence into two parts, each with an interesting point. One is that Wordsworth felt a difficulty others would not have; the other is that he solved it in a distinctive way. It would be easy for readers to glide over this double message, so Bromwich has inserted a speed bump to slow us down. Most of the time, you should follow grammatical rules, like those about commas, but you should bend them when it serves a good purpose. That’s what the writer does here.

The second small point is the phrase “after the revolution” in the first sentence: “Wordsworth turned to poetry after the revolution to remind himself that he was still a human being.” Why doesn’t Bromwich say “after the French Revolution”? Because he has judged his book’s audience. He is writing for specialists who already know which revolution is reverberating through English life in the 1790s. It is the French Revolution, not the earlier loss of the American colonies. If Bromwich were writing for a much broader audience—say, the New York Times Book Review—he would probably insert the extra word to avoid confusion.

The message “Know your audience” applies to all writers. Don’t talk down to them by assuming they can’t get dressed in the morning. Don’t strut around showing off your book learnin’ by tossing in arcane facts and esoteric language for its own sake. Neither will win over readers.

Bromwich, Herbert, and Coleman open their works in different ways, but their choices work well for their different texts. Your task is to decide what kind of opening will work best for yours. Don’t let that happen by default, by grabbing the first idea you happen upon. Consider a couple of different ways of opening your thesis and then choose the one you prefer. Give yourself some options, think them over, then make an informed choice.

Whether you begin with a story, puzzle, or broad statement, the next part of the introduction should pose your main questions and establish your argument. This is your thesis statement—your viewpoint along with the supporting reasons and evidence. It should be articulated plainly so readers understand full well what your paper is about and what it will argue.

After that, give your readers a road map of what’s to come. That’s normally done at the end of the introductory section (or, in a book, at the end of the introductory chapter). Here’s John J. Mearsheimer presenting such a road map in The Tragedy of Great Power Politics . He not only tells us the order of upcoming chapters, he explains why he’s chosen that order and which chapters are most important:

The Plan of the Book The rest of the chapters in this book are concerned mainly with answering the six big questions about power which I identified earlier. Chapter 2, which is probably the most important chapter in the book, lays out my theory of why states compete for power and why they pursue hegemony. In Chapters 3 and 4, I define power and explain how to measure it. I do this in order to lay the groundwork for testing my theory… (John J. Mearsheimer, The Tragedy of Great Power Politics . New York: W. W. Norton, 2001, p. 27)

As this excerpt makes clear, Mearsheimer has already laid out his “six big questions” in the introduction. Now he’s showing us the path ahead, the path to answering those questions.

At the end of the introduction, give your readers a road map of what’s to come. Tell them what the upcoming sections will be and why they are arranged in this particular order.

After having written your introduction it’s time to move to the biggest part: body of a research paper.

Back to How To Write A Research Paper .

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Getting started with your research paper outline

Levels of organization for a research paper outline

First level of organization, second level of organization, third level of organization, fourth level of organization, tips for writing a research paper outline, research paper outline template, my research paper outline is complete: what are the next steps, frequently asked questions about a research paper outline, related articles.

The outline is the skeleton of your research paper. Simply start by writing down your thesis and the main ideas you wish to present. This will likely change as your research progresses; therefore, do not worry about being too specific in the early stages of writing your outline.

A research paper outline typically contains between two and four layers of organization. The first two layers are the most generalized. Each layer thereafter will contain the research you complete and presents more and more detailed information.

The levels are typically represented by a combination of Roman numerals, Arabic numerals, uppercase letters, lowercase letters but may include other symbols. Refer to the guidelines provided by your institution, as formatting is not universal and differs between universities, fields, and subjects. If you are writing the outline for yourself, you may choose any combination you prefer.

This is the most generalized level of information. Begin by numbering the introduction, each idea you will present, and the conclusion. The main ideas contain the bulk of your research paper 's information. Depending on your research, it may be chapters of a book for a literature review , a series of dates for a historical research paper, or the methods and results of a scientific paper.

I. Introduction

II. Main idea

III. Main idea

IV. Main idea

V. Conclusion

The second level consists of topics which support the introduction, main ideas, and the conclusion. Each main idea should have at least two supporting topics listed in the outline.

If your main idea does not have enough support, you should consider presenting another main idea in its place. This is where you should stop outlining if this is your first draft. Continue your research before adding to the next levels of organization.

• A. Background information
• B. Hypothesis or thesis
• A. Supporting topic
• B. Supporting topic

The third level of organization contains supporting information for the topics previously listed. By now, you should have completed enough research to add support for your ideas.

The Introduction and Main Ideas may contain information you discovered about the author, timeframe, or contents of a book for a literature review; the historical events leading up to the research topic for a historical research paper, or an explanation of the problem a scientific research paper intends to address.

• 1. Relevant history
• 2. Relevant history
• 1. The hypothesis or thesis clearly stated
• 1. A brief description of supporting information
• 2. A brief description of supporting information

The fourth level of organization contains the most detailed information such as quotes, references, observations, or specific data needed to support the main idea. It is not typical to have further levels of organization because the information contained here is the most specific.

• a) Quotes or references to another piece of literature
• b) Quotes or references to another piece of literature

Tip: The key to creating a useful outline is to be consistent in your headings, organization, and levels of specificity.

• Be Consistent : ensure every heading has a similar tone. State the topic or write short sentences for each heading but avoid doing both.
• Organize Information : Higher levels of organization are more generally stated and each supporting level becomes more specific. The introduction and conclusion will never be lower than the first level of organization.
• Build Support : Each main idea should have two or more supporting topics. If your research does not have enough information to support the main idea you are presenting, you should, in general, complete additional research or revise the outline.

By now, you should know the basic requirements to create an outline for your paper. With a content framework in place, you can now start writing your paper . To help you start right away, you can use one of our templates and adjust it to suit your needs.

After completing your outline, you should:

• Title your research paper . This is an iterative process and may change when you delve deeper into the topic.
• Begin writing your research paper draft . Continue researching to further build your outline and provide more information to support your hypothesis or thesis.
• Format your draft appropriately . MLA 8 and APA 7 formats have differences between their bibliography page, in-text citations, line spacing, and title.
• Finalize your citations and bibliography . Use a reference manager like Paperpile to organize and cite your research.
• Write the abstract, if required . An abstract will briefly state the information contained within the paper, results of the research, and the conclusion.

An outline is used to organize written ideas about a topic into a logical order. Outlines help us organize major topics, subtopics, and supporting details. Researchers benefit greatly from outlines while writing by addressing which topic to cover in what order.

The most basic outline format consists of: an introduction, a minimum of three topic paragraphs, and a conclusion.

You should make an outline before starting to write your research paper. This will help you organize the main ideas and arguments you want to present in your topic.

• Consistency: ensure every heading has a similar tone. State the topic or write short sentences for each heading but avoid doing both.
• Organization : Higher levels of organization are more generally stated and each supporting level becomes more specific. The introduction and conclusion will never be lower than the first level of organization.
• Support : Each main idea should have two or more supporting topics. If your research does not have enough information to support the main idea you are presenting, you should, in general, complete additional research or revise the outline.

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Research Paper Introduction – Writing Guide and Examples

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Research Paper Introduction

Research paper introduction is the first section of a research paper that provides an overview of the study, its purpose, and the research question (s) or hypothesis (es) being investigated. It typically includes background information about the topic, a review of previous research in the field, and a statement of the research objectives. The introduction is intended to provide the reader with a clear understanding of the research problem, why it is important, and how the study will contribute to existing knowledge in the field. It also sets the tone for the rest of the paper and helps to establish the author’s credibility and expertise on the subject.

How to Write Research Paper Introduction

Writing an introduction for a research paper can be challenging because it sets the tone for the entire paper. Here are some steps to follow to help you write an effective research paper introduction:

• Start with a hook : Begin your introduction with an attention-grabbing statement, a question, or a surprising fact that will make the reader interested in reading further.
• Provide background information: After the hook, provide background information on the topic. This information should give the reader a general idea of what the topic is about and why it is important.
• State the research problem: Clearly state the research problem or question that the paper addresses. This should be done in a concise and straightforward manner.
• State the research objectives: After stating the research problem, clearly state the research objectives. This will give the reader an idea of what the paper aims to achieve.
• Provide a brief overview of the paper: At the end of the introduction, provide a brief overview of the paper. This should include a summary of the main points that will be discussed in the paper.
• Revise and refine: Finally, revise and refine your introduction to ensure that it is clear, concise, and engaging.

Structure of Research Paper Introduction

The following is a typical structure for a research paper introduction:

• Background Information: This section provides an overview of the topic of the research paper, including relevant background information and any previous research that has been done on the topic. It helps to give the reader a sense of the context for the study.
• Problem Statement: This section identifies the specific problem or issue that the research paper is addressing. It should be clear and concise, and it should articulate the gap in knowledge that the study aims to fill.
• Research Question/Hypothesis : This section states the research question or hypothesis that the study aims to answer. It should be specific and focused, and it should clearly connect to the problem statement.
• Significance of the Study: This section explains why the research is important and what the potential implications of the study are. It should highlight the contribution that the research makes to the field.
• Methodology: This section describes the research methods that were used to conduct the study. It should be detailed enough to allow the reader to understand how the study was conducted and to evaluate the validity of the results.
• Organization of the Paper : This section provides a brief overview of the structure of the research paper. It should give the reader a sense of what to expect in each section of the paper.

Research Paper Introduction Examples

Research Paper Introduction Examples could be:

Example 1: In recent years, the use of artificial intelligence (AI) has become increasingly prevalent in various industries, including healthcare. AI algorithms are being developed to assist with medical diagnoses, treatment recommendations, and patient monitoring. However, as the use of AI in healthcare grows, ethical concerns regarding privacy, bias, and accountability have emerged. This paper aims to explore the ethical implications of AI in healthcare and propose recommendations for addressing these concerns.

Example 2: Climate change is one of the most pressing issues facing our planet today. The increasing concentration of greenhouse gases in the atmosphere has resulted in rising temperatures, changing weather patterns, and other environmental impacts. In this paper, we will review the scientific evidence on climate change, discuss the potential consequences of inaction, and propose solutions for mitigating its effects.

Example 3: The rise of social media has transformed the way we communicate and interact with each other. While social media platforms offer many benefits, including increased connectivity and access to information, they also present numerous challenges. In this paper, we will examine the impact of social media on mental health, privacy, and democracy, and propose solutions for addressing these issues.

Example 4: The use of renewable energy sources has become increasingly important in the face of climate change and environmental degradation. While renewable energy technologies offer many benefits, including reduced greenhouse gas emissions and energy independence, they also present numerous challenges. In this paper, we will assess the current state of renewable energy technology, discuss the economic and political barriers to its adoption, and propose solutions for promoting the widespread use of renewable energy.

Purpose of Research Paper Introduction

The introduction section of a research paper serves several important purposes, including:

• Providing context: The introduction should give readers a general understanding of the topic, including its background, significance, and relevance to the field.
• Presenting the research question or problem: The introduction should clearly state the research question or problem that the paper aims to address. This helps readers understand the purpose of the study and what the author hopes to accomplish.
• Reviewing the literature: The introduction should summarize the current state of knowledge on the topic, highlighting the gaps and limitations in existing research. This shows readers why the study is important and necessary.
• Outlining the scope and objectives of the study: The introduction should describe the scope and objectives of the study, including what aspects of the topic will be covered, what data will be collected, and what methods will be used.
• Previewing the main findings and conclusions : The introduction should provide a brief overview of the main findings and conclusions that the study will present. This helps readers anticipate what they can expect to learn from the paper.

When to Write Research Paper Introduction

The introduction of a research paper is typically written after the research has been conducted and the data has been analyzed. This is because the introduction should provide an overview of the research problem, the purpose of the study, and the research questions or hypotheses that will be investigated.

Once you have a clear understanding of the research problem and the questions that you want to explore, you can begin to write the introduction. It’s important to keep in mind that the introduction should be written in a way that engages the reader and provides a clear rationale for the study. It should also provide context for the research by reviewing relevant literature and explaining how the study fits into the larger field of research.

Advantages of Research Paper Introduction

The introduction of a research paper has several advantages, including:

• Establishing the purpose of the research: The introduction provides an overview of the research problem, question, or hypothesis, and the objectives of the study. This helps to clarify the purpose of the research and provide a roadmap for the reader to follow.
• Providing background information: The introduction also provides background information on the topic, including a review of relevant literature and research. This helps the reader understand the context of the study and how it fits into the broader field of research.
• Demonstrating the significance of the research: The introduction also explains why the research is important and relevant. This helps the reader understand the value of the study and why it is worth reading.
• Setting expectations: The introduction sets the tone for the rest of the paper and prepares the reader for what is to come. This helps the reader understand what to expect and how to approach the paper.
• Grabbing the reader’s attention: A well-written introduction can grab the reader’s attention and make them interested in reading further. This is important because it can help to keep the reader engaged and motivated to read the rest of the paper.
• Creating a strong first impression: The introduction is the first part of the research paper that the reader will see, and it can create a strong first impression. A well-written introduction can make the reader more likely to take the research seriously and view it as credible.
• Establishing the author’s credibility: The introduction can also establish the author’s credibility as a researcher. By providing a clear and thorough overview of the research problem and relevant literature, the author can demonstrate their expertise and knowledge in the field.
• Providing a structure for the paper: The introduction can also provide a structure for the rest of the paper. By outlining the main sections and sub-sections of the paper, the introduction can help the reader navigate the paper and find the information they are looking for.

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How to Create a Structured Research Paper Outline | Example

Published on August 7, 2022 by Courtney Gahan . Revised on August 15, 2023.

A research paper outline is a useful tool to aid in the writing process , providing a structure to follow with all information to be included in the paper clearly organized.

A quality outline can make writing your research paper more efficient by helping to:

• Organize your thoughts
• Understand the flow of information and how ideas are related
• Ensure nothing is forgotten

A research paper outline can also give your teacher an early idea of the final product.

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Table of contents

Research paper outline example, how to write a research paper outline, formatting your research paper outline, language in research paper outlines.

• Definition of measles
• Rise in cases in recent years in places the disease was previously eliminated or had very low rates of infection
• Figures: Number of cases per year on average, number in recent years. Relate to immunization
• Symptoms and timeframes of disease
• Risk of fatality, including statistics
• How measles is spread
• Immunization procedures in different regions
• Different regions, focusing on the arguments from those against immunization
• Immunization figures in affected regions
• High number of cases in non-immunizing regions
• Illnesses that can result from measles virus
• Fatal cases of other illnesses after patient contracted measles
• Summary of arguments of different groups
• Summary of figures and relationship with recent immunization debate
• Which side of the argument appears to be correct?

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Follow these steps to start your research paper outline:

• Decide on the subject of the paper
• Write down all the ideas you want to include or discuss
• Organize related ideas into sub-groups
• Arrange your ideas into a hierarchy: What should the reader learn first? What is most important? Which idea will help end your paper most effectively?
• Create headings and subheadings that are effective
• Format the outline in either alphanumeric, full-sentence or decimal format

There are three different kinds of research paper outline: alphanumeric, full-sentence and decimal outlines. The differences relate to formatting and style of writing.

• Alphanumeric
• Full-sentence

An alphanumeric outline is most commonly used. It uses Roman numerals, capitalized letters, arabic numerals, lowercase letters to organize the flow of information. Text is written with short notes rather than full sentences.

• Sub-point of sub-point 1

Essentially the same as the alphanumeric outline, but with the text written in full sentences rather than short points.

• Additional sub-point to conclude discussion of point of evidence introduced in point A

A decimal outline is similar in format to the alphanumeric outline, but with a different numbering system: 1, 1.1, 1.2, etc. Text is written as short notes rather than full sentences.

• 1.1.1 Sub-point of first point
• 1.1.2 Sub-point of first point
• 1.2 Second point

To write an effective research paper outline, it is important to pay attention to language. This is especially important if it is one you will show to your teacher or be assessed on.

There are four main considerations: parallelism, coordination, subordination and division.

Parallelism: Be consistent with grammatical form

Parallel structure or parallelism is the repetition of a particular grammatical form within a sentence, or in this case, between points and sub-points. This simply means that if the first point is a verb , the sub-point should also be a verb.

Example of parallelism:

• Include different regions, focusing on the different arguments from those against immunization

Coordination: Be aware of each point’s weight

Your chosen subheadings should hold the same significance as each other, as should all first sub-points, secondary sub-points, and so on.

Example of coordination:

• Include immunization figures in affected regions
• Illnesses that can result from the measles virus

Subordination: Work from general to specific

Subordination refers to the separation of general points from specific. Your main headings should be quite general, and each level of sub-point should become more specific.

Example of subordination:

Division: break information into sub-points.

Your headings should be divided into two or more subsections. There is no limit to how many subsections you can include under each heading, but keep in mind that the information will be structured into a paragraph during the writing stage, so you should not go overboard with the number of sub-points.

Ready to start writing or looking for guidance on a different step in the process? Read our step-by-step guide on how to write a research paper .

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How to write a research paper introduction (with examples).

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Welcome to our comprehensive guide on crafting the perfect introduction for your research paper. In this blog, we’ll explore the crucial elements of a strong introduction, highlight common pitfalls to avoid, and provide practical tips to effectively set the stage for your study’s objectives and significance. 

Table of Contents

Lack of a clear thesis statement, lack of clear objectives and scope, failure to establish the research significance, insufficient background information, inadequate literature review, ignoring the research gap, overly technical language, poor organization and flow, neglecting the audience, the importance of a good introduction.

A strong introduction sets the tone for the entire paper, guiding the reader through the research journey. It provides context, establishes relevance, and ensures the reader understands the importance of the study.

Starting a research project is exciting, but getting the introduction right is key. It’s like opening the door to your study and inviting readers in. However, there are some common missteps that can trip you up along the way.

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Common mistakes to avoid.

A thesis statement is the central argument or claim that guides the entire research paper. It is a concise summary of the main point or claim of the paper and is typically found at the end of the introduction. A clear thesis statement helps to focus the research, provide direction, and inform the reader of the paper’s purpose. Expert reviewers may even skip the rest of the introduction (as they are well versed in the topic) and focus only on your thesis statement, so it’s vital to make sure it is perfect!

When a research introduction lacks a clear thesis statement, several issues can arise:

• Ambiguity : Without a clear thesis, the reader may be confused about the paper’s purpose and the main argument. Do not talk in vague terms. Whenever possible, use terminology established in recent literature. Narrow down the key aspects of the association that you are investigating (the study sample, the outcome and predictor measures) as much as possible.
• Lack of Focus : The paper can become unfocused and meander through unrelated topics, making it difficult for the reader to follow the argument. Do not try to have more than 1-2 main aims in a paper. Even if you have done supplementary analysis, it is better to say so in the discussion. As a rule of thumb, try to answer one major question only!
• Weak Argumentation : A well-defined thesis provides a strong foundation for building arguments. Without it, the arguments may appear weak and unsupported.

Let's be more practical:

1- In this paper, I will discuss climate change.

• Problem: This statement is too broad and vague. It does not provide a clear direction or specific argument.

2- This paper argues that climate change, measured by global average temperature change, is primarily driven by human activities, such as deforestation and the burning of fossil fuels, and proposes policy measures to mitigate its impact.(1)

• Strengths: – Specificity : It clearly states that the paper will focus on human activities as the main drivers of climate change. – Argument : It presents a specific claim that the paper will argue. – Direction : It hints at the structure of the paper by mentioning policy measures.

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Powerful Tips:

• Be Specific : Clearly define the main argument or claim. Avoid vague or broad statements.
• Be Concise : Keep the thesis statement concise, ideally one to two sentences.
• Provide Direction : Indicate the structure of the paper by hinting at the main points that will be discussed.
• Revise as Needed : Be prepared to revise the thesis statement as your research progresses and your understanding deepens.

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A clear statement of objectives and scope is crucial in a research paper introduction because it outlines what the study aims to achieve and defines the boundaries within which the research will be conducted.

Example of Lacking Clear Objectives and Scope: This paper examines the impacts of climate change on agriculture.

• Problem : This statement is too broad and vague. It does not specify what aspects of climate change or agriculture will be studied, nor does it define the geographical or temporal scope.

Example with Clear Objectives and Scope: This study aims to investigate the effects of rising temperatures and changing precipitation patterns on crop yields in the Midwest United States from 2000 to 2010. The objectives are to (1) assess the impact of temperature changes on corn and soybean yields, (2) analyze how variations in precipitation affect crop growth, and (3) identify adaptive strategies employed by farmers in the region.(2)

Powerful tips:

• Be Specific : Clearly state what the study aims to achieve and avoid vague or broad statements.
• Identify Key Areas : Outline the main areas or aspects that the research will focus on.
• Set Boundaries : Define the geographical, temporal, and conceptual boundaries of the research.
• List Objectives : Clearly articulate specific research objectives or questions that the study will address.
• Stay Realistic : Ensure that the objectives and scope are achievable within the constraints of the research project.
• Make it flow : Make sure you are not repeating the same concepts as the thesis statement, as these two sections are often presented back-to-back in the final paragraph of the introduction! Remember: the thesis statement is your hypothesis or question, and your objectives are ‘how’ you are going to test your thesis.

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This mistake can result in the research appearing trivial or irrelevant, diminishing its potential impact. When the significance of the research is not well-established, readers may struggle to understand the value of the study and why they should care about it.

Example of Failure to Establish Research Significance: This study investigates the effects of social media usage on sleep patterns among teenagers.

• Problem : The significance of studying social media’s impact on sleep patterns is not explained. The reader may wonder why this research is important or what implications it has.

Example with Established Research Significance: This study investigates the effects of social media usage on sleep patterns among teenagers. Understanding this relationship is crucial because insufficient sleep is linked to numerous health issues, including decreased academic performance, heightened stress levels, and increased risk of mental health problems. With the pervasive use of social media among adolescents, identifying how it impacts sleep can inform strategies for promoting healthier habits and improving overall well-being in this vulnerable age group.(3)

• Link to Broader Issues : Connect the research topic to broader issues or trends that highlight its relevance and importance.
• Explain Practical Implications : Discuss the potential practical applications or benefits of the research findings.
• Address Gaps in Knowledge : Identify gaps in the existing literature that the research aims to fill.
• Highlight Potential Impact : Emphasize the potential impact of the research on the field, society, or specific populations.
• Use Concrete Examples : Provide concrete examples or scenarios to illustrate the significance of the research.

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Insufficient background information in the introduction of a research paper refers to failing to provide enough context for the reader to understand the research problem and its significance. Background information sets the stage for the research by offering necessary details about the topic, relevant theories, previous studies, and key terms.

This may lead to:

• Reader Confusion : Without adequate context, readers may struggle to understand the research question, its importance, and how it fits into the broader field of study.
• Weak Justification : Insufficient background can undermine the rationale for the research, making it difficult to justify why the study is necessary or valuable.
• Misinterpretation : Lack of context can lead to misinterpretation of the research objectives, methods, and findings.

Example of Insufficient Background Information: In recent years, many researchers have studied the effects of social media on teenagers. This paper explores the relationship between social media use and anxiety among teenagers.

• Problem : This introduction lacks specific details about the previous research, the theoretical framework, and key terms. It does not provide enough context for the reader to understand why the study is important.

Example of Adequate Background Information: Social media platforms have become an integral part of teenagers’ daily lives, with studies showing that 95% of teens have access to a smartphone and 45% are online almost constantly. Previous research has linked excessive social media use to various mental health issues, including anxiety and depression. However, the mechanisms underlying this relationship remain unclear. This paper explores the impact of social media use on anxiety levels among teenagers, focusing on the roles of social comparison and cyberbullying.(4)

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• Review Relevant Literature : Summarize key studies and theories related to your topic.
• Provide Context : Explain the broader context of your research problem.
• Define Key Terms : Ensure that any specialized terms or concepts are clearly defined.
• Identify the Research Gap : Highlight what is not yet known or understood about your topic.
• Be Concise : Provide enough information to set the stage without overwhelming the reader with details.

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This mistake can occur when the literature review is too brief, lacks depth, omits key studies, or fails to critically analyze previous work. An inadequate literature review can undermine the foundation of the research by failing to provide the necessary context and justification for the study.

Inadequate Literature Review: There has been some research on the relationship between exercise and mental health. This paper will investigate this relationship further.

• Problem : This review is too general and does not provide sufficient detail about the existing research or how it informs the current study.

Example with Adequate Literature Review: Research has consistently shown that regular physical activity has positive effects on mental health. For example, a study by Gujral et al. (2019) demonstrated that aerobic exercise can significantly reduce symptoms of depression and anxiety. Similarly, Smith and Lee (2020) found that strength training also contributes to improved mood and reduced stress levels. However, much of the existing research has focused on adult populations, with relatively few studies examining these effects in adolescents. Additionally, the specific types of exercise that are most beneficial for different mental health outcomes have not been thoroughly investigated. This study aims to explore the effects of various types of exercise on the mental health of high school students, thereby addressing these gaps in the literature.(5-6)

• Be Comprehensive : Review a broad range of studies related to the research topic to provide a thorough context.
• Be Specific : Cite specific studies, including their methodologies, findings, and relevance to the current research.
• Be Critical : Analyze and evaluate the existing research, identifying strengths, weaknesses, and gaps.
• Be Structured : Organize the literature review logically, grouping studies by themes or findings to create a coherent narrative.
• Be Relevant : Focus on the most relevant studies that directly relate to the research question and objectives.

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Ignoring the research gap in a research paper introduction means failing to identify and articulate what specific aspect of the topic has not been explored or adequately addressed in existing literature. The research gap is a critical component because it justifies the necessity and originality of the study. Without highlighting this gap, the research may appear redundant or lacking in significance.

How huge is this mistake?

• Lack of Justification : The study may not appear necessary or relevant, diminishing its perceived value.
• Redundancy : The research may seem to duplicate existing studies, offering no new insights or contributions to the field. Even if you are using methodology similar to previous studies, it is important to note why you are doing so e.g., few studies have used that specific methodology, and you would like to validate it in your sample population!
• Reader Disinterest : Readers may lose interest if they do not see the unique contribution or purpose of the research.

Example of Ignoring the Research Gap: Many studies have examined the effects of exercise on mental health. This paper looks at the relationship between physical activity and depression.

• Problem : This introduction does not specify what aspect of the relationship between physical activity and depression has not been studied, failing to highlight the unique contribution of the research.

Example of Identifying the Research Gap: Numerous studies have demonstrated the general benefits of physical activity on mental health, particularly its role in alleviating symptoms of depression. However, there is limited research on how different types of exercise (e.g., aerobic vs. anaerobic) specifically impact depression levels among various age groups. This study investigates the differential effects of aerobic and anaerobic exercise on depression in young adults, aiming to fill this gap in the literature.(6)

• Conduct a Thorough Literature Review : Understand the current state of research in your field to identify what has been studied and where gaps exist.
• Be Specific : Clearly articulate what specific aspect has not been covered in existing studies.
• Link to Your Study : Explain how your research will address this gap and contribute to the field.
• Use Evidence : Support your identification of the gap with references to previous studies.
• Emphasize Significance : Highlight why filling this gap is important for advancing knowledge or practical applications.

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Overly technical language refers to the excessive use of jargon, complex terms, and highly specialized language that may be difficult for readers, especially those not familiar with the field, to understand. While technical language is sometimes necessary in academic writing, overusing it in the introduction can create several problems:

• Reader Alienation : Readers may find the text intimidating or inaccessible, leading to disengagement.
• Lack of Clarity : The main points and significance of the research can become obscured by complex terminology.
• Reduced Impact : The research may fail to communicate its importance effectively if readers struggle to understand the introduction.

Example of Overly Technical Language: The present study examines the metacognitive strategies employed by individuals in the domain of second language acquisition, specifically focusing on the interaction between declarative and procedural memory systems in the process of syntactic parsing.

• Problem : This sentence is loaded with jargon (“metacognitive strategies,” “second language acquisition,” “declarative and procedural memory systems,” “syntactic parsing”), which can be overwhelming and confusing for readers not familiar with these terms.

Example with Simplified Language: This study looks at the thinking strategies people use when learning a second language. It focuses on how different types of memory, such as the knowledge of facts and the skills for doing things, help in understanding sentence structures.(7)

• Know Your Audience : Tailor the language to the intended audience, ensuring it is accessible to both specialists and non-specialists.
• Define Term s: When technical terms are necessary, provide clear definitions or explanations.
• Use Analogies : Simplify complex concepts using analogies or examples that are easy to understand.
• Avoid Jargon : Limit the use of jargon and specialized terms, especially in the introduction.
• Seek Feedback : Ask peers or non-experts to read the introduction and provide feedback on clarity and accessibility.

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Poor organization and flow in a research paper introduction refer to a lack of logical structure and coherence that makes the introduction difficult to follow. This can occur when ideas are presented in a haphazard manner, transitions between sections are weak or non-existent, and the overall narrative is disjointed. A well-organized introduction should smoothly guide the reader from the general context to the specific objectives of the study.

Example of Poor Organization and Flow: “Climate change affects agriculture in various ways. Many studies have looked at the impact on crop yields. This paper will discuss the economic implications of these changes. Climate models predict increased variability in weather patterns, which will affect water availability. Researchers have found that higher temperatures reduce the growing season for many crops.”

• Problem : The ideas are presented in a scattered manner without clear connections. The mention of economic implications seems out of place, and there are abrupt shifts between topics.

Example with Good Organization and Flow: Climate change poses significant challenges to agriculture by altering weather patterns, impacting crop yields, and affecting water availability. Numerous studies have shown that increased temperatures can shorten the growing season for many crops, leading to reduced yields. Additionally, climate models predict increased variability in weather patterns, which complicates water management for farmers. These changes not only affect food production but also have substantial economic implications for agricultural communities. This paper will examine the economic impacts of climate-induced changes in agriculture, focusing on crop yield variability and water resource management.(1)

• Create an Outline : Before writing, outline the main points you want to cover in the introduction.
• Think in terms of an inverted triangle : Begin broadly to introduce basic concepts related to your topic. As you progress through the introduction, you can introduce more and more specific topics until you have enough information to justify your thesis statement
• Use Transitional Phrases : Employ transitional phrases and sentences to connect ideas and sections smoothly.
• Follow a Logical Sequence : Present information in a logical order, moving from general context to specific objectives.
• Maintain Focus : Stay focused on the main topic and avoid introducing unrelated ideas.
• Revise for Coherence : Review and revise the introduction to ensure that it flows well and that each part contributes to the overall narrative.

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Neglecting the audience refers to failing to consider the background, knowledge level, and interests of the intended readers when writing the introduction of a research paper. This mistake can manifest in several ways, such as using overly technical language for a general audience, providing insufficient background information for readers unfamiliar with the topic, or failing to engage the readers’ interest.

Example of Neglecting the Audience: For experts in genomic sequencing, this study explores the epigenetic modifications resulting from CRISPR-Cas9 interventions, focusing on the methylation patterns and histone modifications observed in gene-edited cells.

• Problem : This introduction assumes a high level of expertise in genomic sequencing and epigenetics, which may alienate readers without this background.

Example with Audience Consideration: CRISPR-Cas9 is a groundbreaking tool in genetic research that allows scientists to edit DNA with precision. However, altering genes can lead to unexpected changes in how genes are expressed, known as epigenetic modifications. This study investigates these changes by looking at specific markers on DNA, such as methylation patterns, and how they affect gene activity in cells that have been edited using CRISPR-Cas9. Our goal is to understand the broader implications of gene editing on cellular functions, which is crucial for advancing medical research and treatments.(8)

• Identify the Audience : Determine who the intended readers are (e.g., experts, students, general public) and tailor the language and content accordingly. Read papers from the journals you are considering for submission. Professional editors curate the language used in these papers and are a great starting point to identify the level of expertise of your audience!
• Simplify Language : Use clear and straightforward language, avoiding jargon and technical terms unless they are necessary and well-explained.
• Provide Background Information : Include sufficient background information to help readers understand the context and significance of the research.
• Engage the Reader : Start with an engaging introduction that highlights the relevance and importance of the research topic.
• Anticipate Questions : Consider what questions or concerns the audience might have and address them in the introduction

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By following these guidelines and avoiding common pitfalls, you can create an introduction that not only grabs the attention of your readers but also sets the stage for a compelling and impactful research paper.

Final Tips:

• Revise and refine your introduction multiple times to ensure clarity and coherence.
• Seek feedback from peers, mentors, or advisors to identify areas for improvement.
• Keep your audience in mind and tailor your language and content to their needs and interests.
• Stay focused on your research objectives and ensure that every part of your introduction contributes to achieving them.
• Be confident in the significance of your research and its potential impact on your field or community.

Let your introduction be more than just words on a page. It’s a doorway to understanding. To help you along, we’ve created a practical course on writing and publishing research projects. It’s 100% risk-free, with a money-back guarantee if you’re not satisfied. Try it out now by clicking here .

Wishing you success on your research journey!

Marina Ramzy Mourid, Hamza Ibad, MBBS

Dr. Ibad graduated from the Aga Khan University Medical College and completed a post-doctoral research fellowship at Johns Hopkins in the Department of Radiology (Musculoskeletal Division). Dr. Ibad’s research and clinical interests include deep-learning applications for automated image interpretation, osteoarthritis, and sarcopenia-related health outcomes.

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About thematchguy, become a researcher in the united states, interested in learning more about literature search with examples from published literature, the comprehensive research course, the systematic review course, the medical statistics course, how to find research positions in the us.

1. Abbass K, Qasim MZ, Song H, Murshed M, Mahmood H, Younis I. A review of the global climate change impacts, adaptation, and sustainable mitigation measures. Environ Sci Pollut Res. 2022;29(28):42539-42559. doi:10.1007/s11356-022-19718-6

2. Cai X, Wang D, Laurent R. Impact of climate change on crop yield: a case study of rainfed corn in central illinois. Journal of Applied Meteorology and Climatology. 2009;48(9):1868-1881. doi:10.1175/2009JAMC1880.1

3. Van Den Eijnden RJJM, Geurts SM, Ter Bogt TFM, Van Der Rijst VG, Koning IM. Social media use and adolescents’ sleep: a longitudinal study on the protective role of parental rules regarding internet use before sleep. IJERPH. 2021;18(3):1346. doi:10.3390/ijerph18031346

4. Schmitt, M. (2021). Effects of social media and technology on adolescents: What the evidence is showing and what we can do about it. Journal of Family and Consumer Sciences Education, 38(1), 51-59.

5. Gujral S, Aizenstein H, Reynolds CF, Butters MA, Erickson KI. Exercise effects on depression: Possible neural mechanisms. General Hospital Psychiatry. 2017;49:2-10. doi:10.1016/j.genhosppsych.2017.04.012

6. Smith PJ, Merwin RM. The role of exercise in management of mental health disorders: an integrative review. Annu Rev Med. 2021;72(1):45-62. doi:10.1146/annurev-med-060619-022943

7. Sun Q, Zhang LJ. Understanding learners’ metacognitive experiences in learning to write in English as a foreign language: A structural equation modeling approach. Front Psychol. 2022;13:986301. doi:10.3389/fpsyg.2022.986301

8. Kolanu ND. Crispr–cas9 gene editing: curing genetic diseases by inherited epigenetic modifications. Glob Med Genet. 2024;11(01):113-122. doi:10.1055/s-0044-1785234

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• A Research Guide
• Research Paper Guide

How to Write an Introduction for a Research Paper

• Purpose of intro
• Key elements
• Writing an effective intro
• Step-by-step guide
• Research intro checklist
• Introduction formats
• Good and bad examples

An introductory paragraph is vital for any academic paper. It allows you to show reviewers why your research topic is worth reading about. In this article, we will explore the tips to make a good introduction paragraph. You’ll get a step-by-step tutorial on writing your paper’s informative yet laconic intro.

What is the purpose of an introduction?

The purpose of a research paper intro is to provide an overview and context for the study being conducted. A research paper engages the reader, establishes the importance of the research topic, and outlines the study’s objectives and scope.

The paper intro also presents the question or hypothesis and summarizes relevant background characteristics and existing literature.

An effective introduction helps the reader understand the significance and relevance of the research paper and sets the stage for the subsequent sections. The introduction captures the reader’s attention and creates a foundation for understanding the research and its contributions.

The key elements of a scientific paper introduction

The introduction of your research paper should include several key elements, including the problem statement, hypothesis/thesis/research question, purpose, and background.

Let’s explore each of these parts of the research paper intro in detail:

• Problem Statement : identifies the specific issue or gap in knowledge that the research paper aims to address. It highlights the problem’s relevance, significance, and potential impact on the field of study. The problem statement sets the stage for the research by clearly stating the project or research gap.
• Hypothesis / Thesis / Research Question : a paper hypothesis predicts the relationship between variables, a thesis statement presents the main argument or claim, and a research question seeks to put a specific aspect on a research paper.
• Purpose: describes the overall objective or goal the research paper aims to achieve. It outlines the researcher’s intention and provides a clear direction for the investigation. The purpose statement typically explains why the research is being conducted and what the researcher hopes to accomplish by the end of the study.
• Background : provides the necessary context and information to familiarize readers with the research paper. It presents a concise review of the relevant literature, previous studies, and theoretical frameworks that have shaped the understanding of the problem.

Shortly, the introduction section of a research paper combines these key elements to introduce the problem, state the hypothesis/thesis/research question, define the paper’s purpose, and provide the background necessary for readers to understand the significance and context of the study.

How to write an effective intro?

To start an introduction for a research paper, consider the following steps:

• Hook the reader : begin with a compelling opening sentence or a thought-provoking statement that grabs the reader’s attention. This could be an interesting fact, a relevant anecdote, or a surprising statistic related to your research paper.
• Provide background information : offer a brief overview of the paper and its significance in the field. This helps to improve the structure of an introduction and demonstrate why it is important to investigate the point further in a paper.
• State the problem : clearly articulate the problem statement or research gap your study aims to address. Explain the specific issue or gap in knowledge that your research paper seeks to explore, emphasizing its relevance and potential impact.
• Present the research question/hypothesis/thesis : formulate a concise and focused research question, hypothesis, or thesis statement in the intro that guides your scientific paper. This sets the direction for your research and provides a clear focus for the reader.
• Outline the purpose and objectives : explain the overall purpose of your research paper and the specific objectives you aim to achieve. This helps readers understand why your study is being conducted and what you hope to accomplish.
• Preview the structure : briefly introduce the organization and structure of your research paper. Mention the main sections or components that will be covered, giving readers a sense of what to expect as they continue reading the paper.

Remember, the intro should be concise and engaging, providing a clear roadmap for your research and capturing the reader’s interest from the very beginning. There are different ways to start a research paper, and you can pick the intro that suits you best.

Writing an introduction to a research paper: key steps

Here’s a short guide on getting you started with an introduction:

• Start with an attention-grabbing opening : begin your intro with a captivating statement, a relevant quote, a surprising fact, or an intriguing anecdote. This will engage the reader’s interest and make them curious about your research paper.
• Provide background information : write a brief overview of the research topic to provide context and establish the importance of the subject matter. Discuss key concepts, definitions, or historical background relevant to your study. This section should help the reader understand the broader context of your research paper.
• State the research problem or gap : clearly define the specific problem or research gap your study aims to address. Explain why this problem is significant and deserving of investigation. This helps the reader understand the purpose and relevance of your research paper.
• Present your research question or thesis statement : formulate a clear and concise research question, hypothesis, or thesis statement that serves as the central focus of your study. This statement should guide your research paper and articulate your introduction format.
• Outline the structure of the paper : write a brief preview of your research paper’s main sections and organization. This helps the reader understand the flow of your paper and what to expect in each section. Provide a roadmap by mentioning the key points or arguments discussed in subsequent sections.

By following these steps, you can create an introduction that grabs the reader’s attention and sets the stage for the rest of your research paper, clearly understanding your study’s problem, purpose, and structure.

Writing a checklist for a proper college paper introduction

Here’s a short writing checklist for a research paper intro:

• Attention-grabbing opening:
• Does the research paper introduction example start with a compelling statement, relevant quote, surprising fact, or intriguing anecdote?
• Is the opening engaging enough to capture readers’ attention and make them curious about the research paper?
• Background information:
• Have you provided a concise overview of the research topic, including relevant definitions, concepts, or historical context?
• Does the background information help the reader understand the broader context and importance of the subject matter?
• Clear problem statement:
• Have you clearly stated the specific problem or research gap that your study aims to address?
• Does a research introduction have a well-defined, strong, and significant problem statement?
• Research question or thesis statement:
• Have you presented a clear and concise research question, hypothesis, or thesis statement that guides your paper?
• Does the research question or thesis statement align with the problem statement and set the direction for your research paper?
• Structure and organization:
• Did you write a brief overview of the structure and organization of the research paper?
• Does the introduction outline the main sections or components covered in the paper?
• Coherence and flow:
• Is the intro logically organized? Does it have smooth transitions between ideas and paragraphs?
• Does the intro flow smoothly from the opening to the problem statement, research question, and purpose?
• Conciseness and clarity:
• Have you kept the introduction concise, avoiding unnecessary details or tangents?
• Is the language clear, avoiding jargon or overly technical terms that may confuse the reader?
• Relevance and significance:
• Have you clearly explained the relevance and significance of the research topic and the paper’s potential impact?
• Does the introduction effectively communicate why your research is important and worth exploring?

This checklist will help you to review your research essay introduction to ensure it effectively grabs the reader’s attention, provides necessary background information, states the problem clearly, presents a focused research question or thesis statement, outlines the structure of the paper, and maintains coherence and clarity throughout.

Types of intro formats

Different academic disciplines may follow specific formatting styles for research introduction, such as MLA (Modern Language Association), APA (American Psychological Association), Chicago, ASA (American Sociological Association), and AMA (American Medical Association).

To write an introduction paragraph, you should understand the differences between the most common academic formats for your future paper.

MLA (Modern Language Association):

• Primarily used in humanities, literature, and arts disciplines.
• Features in-text citations using the author-page format (e.g., “Smith 45”).

APA (American Psychological Association):

• Commonly used in social sciences, psychology, and education.
• Utilizes in-text citations with the author-date format (e.g., “Smith, 2019”).
• Often used in history, humanities, and some social sciences.
• Offers two styles: the notes-bibliography system and the author-date system.
• Includes a bibliography page to list all sources used.

ASA (American Sociological Association):

• Primarily used in sociology and related social sciences.
• Utilizes in-text citations with the author-date format (e.g., “Smith 2019”).

AMA (American Medical Association):

• Commonly used in medical, health, and biological sciences.
• Features in-text citations with a superscript number (e.g., “Smith^1”).
• Emphasizes accuracy and consistency in citation style.

All formatting styles mean a set of rules and guidelines for citing sources, formatting headings, page layout, and referencing. It’s important to consult the specific style guide or manual associated with your field of study before you write.

These might include guidelines provided by your institution to ensure proper paper formatting and adherence of a research introduction to the chosen style.

Research introduction sample

Now that you know how the idea goes in the introduction of a research paper, let’s see the practical examples of good and bad introductions and discuss their differences.

Good example:

Title: “Exploring the Impact of Climate Change on Biodiversity: A Comprehensive Analysis”

Introduction:

Climate change is a pressing global issue that has far-reaching consequences for our planet. Its effects on various ecosystems, particularly biodiversity loss, have attracted significant attention from researchers and policymakers alike.

This research paper aims to provide a comprehensive analysis of the impact of climate change on biodiversity, focusing on key regions and species vulnerable to these changes. By examining the latest scientific literature, empirical studies, and expert opinions, we will explore the complex interplay between climate change and biodiversity loss, shed light on the underlying mechanisms, and propose potential mitigation strategies.

Understanding these dynamics is crucial for developing effective conservation strategies and promoting sustainable practices that will help preserve our planet’s invaluable natural heritage.

Bad example:

Title: “Climate Change and Biodiversity”

Climate change and biodiversity are two important topics that have received considerable attention recently. Climate change refers to the long-term alteration of temperature and precipitation patterns, while biodiversity encompasses the variety of life forms found on Earth.

In this research paper, we will discuss the impact of climate change on biodiversity and explore various examples and case studies. The paper will also highlight the significance of addressing this issue and present potential solutions.

By delving into this subject, we aim to contribute to the existing body of knowledge and raise awareness about the importance of protecting biodiversity in climate change.

To begin an introduction paragraph, don’t provide too much background or theory at once. Remember to arrange your thoughts concisely while keeping the important information for the paper body.

A good intro should answer the four basic questions:

• What was I studying?
• Why was this topic important to investigate?
• What did we know about this topic before I did this study?
• How will this study advance our knowledge?

Remember that you might not get a second chance to create a positive first impression. That’s why it’s equally important to keep your paper laconic and to end an introduction paragraph with a call to action to read your research paper.

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What is a "good" introduction?

Citing sources in the introduction, "introduction checklist" from: how to write a good scientific paper. chris a. mack. spie. 2018..

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This is where you describe briefly and clearly why you are writing the paper. The introduction supplies sufficient background information for the reader to understand and evaluate the experiment you did. It also supplies a rationale for the study.

• Present the problem and the proposed solution
• Presents nature and scope of the problem investigated
• Reviews the pertinent literature to orient the reader
• States the method of the experiment
• State the principle results of the experiment

It is important to cite sources in the introduction section of your paper as evidence of the claims you are making. There are ways of citing sources in the text so that the reader can find the full reference in the literature cited section at the end of the paper, yet the flow of the reading is not badly interrupted. Below are some example of how this can be done:     "Smith (1983) found that N-fixing plants could be infected by several different species of Rhizobium."     "Walnut trees are known to be allelopathic (Smith 1949,  Bond et al. 1955, Jones and Green 1963)."     "Although the presence of Rhizobium normally increases the growth of legumes (Nguyen 1987), the opposite effect has been observed (Washington 1999)." Note that articles by one or two authors are always cited in the text using their last names. However, if there are more than two authors, the last name of the 1st author is given followed by the abbreviation et al. which is Latin for "and others". 

From:  https://writingcenter.gmu.edu/guides/imrad-reports-introductions

• Indicate the field of the work, why this field is important, and what has already been done (with proper citations).
• Indicate a gap, raise a research question, or challenge prior work in this territory.
• Outline the purpose and announce the present research, clearly indicating what is novel and why it is significant.
• Avoid: repeating the abstract; providing unnecessary background information; exaggerating the importance of the work; claiming novelty without a proper literature search. 
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How to Write an Introduction Paragraph in 3 Steps

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It’s the roadmap to your essay, it’s the forecast for your argument, it’s...your introduction paragraph, and writing one can feel pretty intimidating. The introduction paragraph is a part of just about every kind of academic writing , from persuasive essays to research papers. But that doesn’t mean writing one is easy!

If trying to write an intro paragraph makes you feel like a Muggle trying to do magic, trust us: you aren’t alone. But there are some tips and tricks that can make the process easier—and that’s where we come in.

In this article, we’re going to explain how to write a captivating intro paragraph by covering the following info:  

• A discussion of what an introduction paragraph is and its purpose in an essay
• An overview of the most effective introduction paragraph format, with explanations of the three main parts of an intro paragraph
• An analysis of real intro paragraph examples, with a discussion of what works and what doesn’t
• A list of four top tips on how to write an introduction paragraph

Are you ready? Let’s begin!

What Is an Introduction Paragraph? 

An introduction paragraph is the first paragraph of an essay , paper, or other type of academic writing. Argumentative essays , book reports, research papers, and even personal  essays are common types of writing that require an introduction paragraph. Whether you’re writing a research paper for a science course or an argumentative essay for English class , you’re going to have to write an intro paragraph. 

So what’s the purpose of an intro paragraph? As a reader’s first impression of your essay, the intro paragraph should introduce the topic of your paper. 

Your introduction will also state any claims, questions, or issues that your paper will focus on. This is commonly known as your paper’s thesis . This condenses the overall point of your paper into one or two short sentences that your reader can come back and reference later.

But intro paragraphs need to do a bit more than just introduce your topic. An intro paragraph is also supposed to grab your reader’s attention. The intro paragraph is your chance to provide just enough info and intrigue to make your reader say, “Hey, this topic sounds interesting. I think I’ll keep reading this essay!” That can help your essay stand out from the crowd.

In most cases, an intro paragraph will be relatively short. A good intro will be clear, brief, purposeful, and focused. While there are some exceptions to this rule, it’s common for intro paragraphs to consist of three to five sentences . 

Effectively introducing your essay’s topic, purpose, and getting your reader invested in your essay sounds like a lot to ask from one little paragraph, huh? In the next section, we’ll demystify the intro paragraph format by breaking it down into its core parts . When you learn how to approach each part of an intro, writing one won’t seem so scary!

Once you figure out the three parts of an intro paragraph, writing one will be a piece of cake!

The 3 Main Parts of an Intro Paragraph

In general, an intro paragraph is going to have three main parts: a hook, context, and a thesis statement . Each of these pieces of the intro plays a key role in acquainting the reader with the topic and purpose of your essay. 

Below, we’ll explain how to start an introduction paragraph by writing an effective hook, providing context, and crafting a thesis statement. When you put these elements together, you’ll have an intro paragraph that does a great job of making a great first impression on your audience!

Intro Paragraph Part 1: The Hook

When it comes to how to start an introduction paragraph, o ne of the most common approaches is to start with something called a hook. 

What does hook mean here, though? Think of it this way: it’s like when you start a new Netflix series: you look up a few hours (and a few episodes) later and you say, “Whoa. I guess I must be hooked on this show!” 

That’s how the hook is supposed to work in an intro paragrap h: it should get your reader interested enough that they don’t want to press the proverbial “pause” button while they’re reading it . In other words, a hook is designed to grab your reader’s attention and keep them reading your essay! 

This means that the hook comes first in the intro paragraph format—it’ll be the opening sentence of your intro. 

It’s important to realize  that there are many different ways to write a good hook. But generally speaking, hooks must include these two things: what your topic is, and the angle you’re taking on that topic in your essay. 

One approach to writing a hook that works is starting with a general, but interesting, statement on your topic. In this type of hook, you’re trying to provide a broad introduction to your topic and your angle on the topic in an engaging way . 

For example, if you’re writing an essay about the role of the government in the American healthcare system, your hook might look something like this: 

There's a growing movement to require that the federal government provide affordable, effective healthcare for all Americans. 

This hook introduces the essay topic in a broad way (government and healthcare) by presenting a general statement on the topic. But the assumption presented in the hook can also be seen as controversial, which gets readers interested in learning more about what the writer—and the essay—has to say.

In other words, the statement above fulfills the goals of a good hook: it’s intriguing and provides a general introduction to the essay topic.

Intro Paragraph Part 2: Context

Once you’ve provided an attention-grabbing hook, you’ll want to give more context about your essay topic. Context refers to additional details that reveal the specific focus of your paper. So, whereas the hook provides a general introduction to your topic, context starts helping readers understand what exactly you’re going to be writing about

You can include anywhere from one to several sentences of context in your intro, depending on your teacher’s expectations, the length of your paper, and complexity of your topic. In these context-providing sentences, you want to begin narrowing the focus of your intro. You can do this by describing a specific issue or question about your topic that you’ll address in your essay. It also helps readers start to understand why the topic you’re writing about matters and why they should read about it. 

So, what counts as context for an intro paragraph? Context can be any important details or descriptions that provide background on existing perspectives, common cultural attitudes, or a specific situation or controversy relating to your essay topic. The context you include should acquaint your reader with the issues, questions, or events that motivated you to write an essay on your topic...and that your reader should know in order to understand your thesis. 

For instance, if you’re writing an essay analyzing the consequences of sexism in Hollywood, the context you include after your hook might make reference to the #metoo and #timesup movements that have generated public support for victims of sexual harassment. 

The key takeaway here is that context establishes why you’re addressing your topic and what makes it important. It also sets you up for success on the final piece of an intro paragraph: the thesis statement.

Elle Woods' statement offers a specific point of view on the topic of murder...which means it could serve as a pretty decent thesis statement!

Intro Paragraph Part 3: The Thesis

The final key part of how to write an intro paragraph is the thesis statement. The thesis statement is the backbone of your introduction: it conveys your argument or point of view on your topic in a clear, concise, and compelling way . The thesis is usually the last sentence of your intro paragraph. 

Whether it’s making a claim, outlining key points, or stating a hypothesis, your thesis statement will tell your reader exactly what idea(s) are going to be addressed in your essay. A good thesis statement will be clear, straightforward, and highlight the overall point you’re trying to make.

Some instructors also ask students to include an essay map as part of their thesis. An essay map is a section that outlines the major topics a paper will address. So for instance, say you’re writing a paper that argues for the importance of public transport in rural communities. Your thesis and essay map might look like this: 

Having public transport in rural communities helps people improve their economic situation by giving them reliable transportation to their job, reducing the amount of money they spend on gas, and providing new and unionized work .

The underlined section is the essay map because it touches on the three big things the writer will talk about later. It literally maps out the rest of the essay!

So let’s review: Your thesis takes the idea you’ve introduced in your hook and context and wraps it up. Think of it like a television episode: the hook sets the scene by presenting a general statement and/or interesting idea that sucks you in. The context advances the plot by describing the topic in more detail and helping readers understand why the topic is important. And finally, the thesis statement provides the climax by telling the reader what you have to say about the topic. 

The thesis statement is the most important part of the intro. Without it, your reader won’t know what the purpose of your essay is! And for a piece of writing to be effective, it needs to have a clear purpose. Your thesis statement conveys that purpose , so it’s important to put careful thought into writing a clear and compelling thesis statement. 

How To Write an Introduction Paragraph: Example and Analysis

Now that we’ve provided an intro paragraph outline and have explained the three key parts of an intro paragraph, let’s take a look at an intro paragraph in action.

To show you how an intro paragraph works, we’ve included a sample introduction paragraph below, followed by an analysis of its strengths and weaknesses.

Example of Introduction Paragraph

While college students in the U.S. are struggling with how to pay for college, there is another surprising demographic that’s affected by the pressure to pay for college: families and parents. In the face of tuition price tags that total more than $100,000 (as a low estimate), families must make difficult decisions about how to save for their children’s college education. Charting a feasible path to saving for college is further complicated by the FAFSA’s estimates for an “Expected Family Contribution”—an amount of money that is rarely feasible for most American families. Due to these challenging financial circumstances and cultural pressure to give one’s children the best possible chance of success in adulthood, many families are going into serious debt to pay for their children’s college education. The U.S. government should move toward bearing more of the financial burden of college education. 

Example of Introduction Paragraph: Analysis

Before we dive into analyzing the strengths and weaknesses of this example intro paragraph, let’s establish the essay topic. The sample intro indicates that t he essay topic will focus on one specific issue: who should cover the cost of college education in the U.S., and why. Both the hook and the context help us identify the topic, while the thesis in the last sentence tells us why this topic matters to the writer—they think the U.S. Government needs to help finance college education. This is also the writer’s argument, which they’ll cover in the body of their essay. 

Now that we’ve identified the essay topic presented in the sample intro, let’s dig into some analysis. To pin down its strengths and weaknesses, we’re going to use the following three questions to guide our example of introduction paragraph analysis: 

• Does this intro provide an attention-grabbing opening sentence that conveys the essay topic? 
• Does this intro provide relevant, engaging context about the essay topic? 
• Does this intro provide a thesis statement that establishes the writer’s point of view on the topic and what specific aspects of the issue the essay will address? 

Now, let’s use the questions above to analyze the strengths and weaknesses of this sample intro paragraph. 

Does the Intro Have a Good Hook? 

First, the intro starts out with an attention-grabbing hook . The writer starts by presenting  an assumption (that the U.S. federal government bears most of the financial burden of college education), which makes the topic relatable to a wide audience of readers. Also note that the hook relates to the general topic of the essay, which is the high cost of college education. 

The hook then takes a surprising turn by presenting a counterclaim : that American families, rather than students, feel the true burden of paying for college. Some readers will have a strong emotional reaction to this provocative counterclaim, which will make them want to keep reading! As such, this intro provides an effective opening sentence that conveys the essay topic. 

Does the Intro Give Context?

T he second, third, and fourth sentences of the intro provide contextual details that reveal the specific focus of the writer’s paper . Remember: the context helps readers start to zoom in on what the paper will focus on, and what aspect of the general topic (college costs) will be discussed later on. 

The context in this intro reveals the intent and direction of the paper by explaining why the issue of families financing college is important. In other words, the context helps readers understand why this issue matters , and what aspects of this issue will be addressed in the paper.  

To provide effective context, the writer refers to issues (the exorbitant cost of college and high levels of family debt) that have received a lot of recent scholarly and media attention. These sentences of context also elaborate on the interesting perspective included in the hook: that American families are most affected by college costs.

Does the Intro Have a Thesis? 

Finally, this intro provides a thesis statement that conveys the writer’s point of view on the issue of financing college education. This writer believes that the U.S. government should do more to pay for students’ college educations. 

However, the thesis statement doesn’t give us any details about why the writer has made this claim or why this will help American families . There isn’t an essay map that helps readers understand what points the writer will make in the essay.

To revise this thesis statement so that it establishes the specific aspects of the topic that the essay will address, the writer could add the following to the beginning of the thesis statement:

The U.S. government should take on more of the financial burden of college education because other countries have shown this can improve education rates while reducing levels of familial poverty.

Check out the new section in bold. Not only does it clarify that the writer is talking about the pressure put on families, it touches on the big topics the writer will address in the paper: improving education rates and reduction of poverty. So not only do we have a clearer argumentative statement in this thesis, we also have an essay map!  

So, let’s recap our analysis. This sample intro paragraph does an effective job of providing an engaging hook and relatable, interesting context, but the thesis statement needs some work ! As you write your own intro paragraphs, you might consider using the questions above to evaluate and revise your work. Doing this will help ensure you’ve covered all of your bases and written an intro that your readers will find interesting!

4 Tips for How To Write an Introduction Paragraph

Now that we’ve gone over an example of introduction paragraph analysis, let’s talk about how to write an introduction paragraph of your own. Keep reading for four tips for writing a successful intro paragraph for any essay. 

Tip 1: Analyze Your Essay Prompt

If you’re having trouble with how to start an introduction paragraph, analyze your essay prompt! Most teachers give you some kind of assignment sheet, formal instructions, or prompt to set the expectations for an essay they’ve assigned, right? Those instructions can help guide you as you write your intro paragraph!

Because they’ll be reading and responding to your essay, you want to make sure you meet your teacher’s expectations for an intro paragraph . For instance, if they’ve provided specific instructions about how long the intro should be or where the thesis statement should be located, be sure to follow them!

The type of paper you’re writing can give you clues as to how to approach your intro as well. If you’re writing a research paper, your professor might expect you to provide a research question or state a hypothesis in your intro. If you’re writing an argumentative essay, you’ll need to make sure your intro overviews the context surrounding your argument and your thesis statement includes a clear, defensible claim. 

Using the parameters set out by your instructor and assignment sheet can put some easy-to-follow boundaries in place for things like your intro’s length, structure, and content. Following these guidelines can free you up to focus on other aspects of your intro... like coming up with an exciting hook and conveying your point of view on your topic!

Tip 2: Narrow Your Topic

You can’t write an intro paragraph without first identifying your topic. To make your intro as effective as possible, you need to define the parameters of your topic clearly—and you need to be specific. 

For example, let’s say you want to write about college football. “NCAA football” is too broad of a topic for a paper. There is a lot to talk about in terms of college football! It would be tough to write an intro paragraph that’s focused, purposeful, and engaging on this topic. In fact, if you did try to address this whole topic, you’d probably end up writing a book!

Instead, you should narrow broad topics to  identify a specific question, claim, or issue pertaining to some aspect of NCAA football for your intro to be effective. So, for instance, you could frame your topic as, “How can college professors better support NCAA football players in academics?” This focused topic pertaining to NCAA football would give you a more manageable angle to discuss in your paper.

So before you think about writing your intro, ask yourself: Is my essay topic specific, focused, and logical? Does it convey an issue or question that I can explore over the course of several pages? Once you’ve established a good topic, you’ll have the foundation you need to write an effective intro paragraph . 

Once you've figured out your topic, it's time to hit the books!

Tip 3: Do Your Research

This tip is tightly intertwined with the one above, and it’s crucial to writing a good intro: do your research! And, guess what? This tip applies to all papers—even ones that aren’t technically research papers. 

Here’s why you need to do some research: getting the lay of the land on what others have said about your topic—whether that’s scholars and researchers or the mass media— will help you narrow your topic, write an engaging hook, and provide relatable context. 

You don't want to sit down to write your intro without a solid understanding of the different perspectives on your topic. Whether those are the perspectives of experts or the general public, these points of view will help you write your intro in a way that is intriguing and compelling for your audience of readers. 

Tip 4: Write Multiple Drafts

Some say to write your intro first; others say write it last. The truth is, there isn’t a right or wrong time to write your intro—but you do need to have enough time to write multiple drafts . 

Oftentimes, your professor will ask you to write multiple drafts of your paper, which gives you a built-in way to make sure you revise your intro. Another approach you could take is to write out a rough draft of your intro before you begin writing your essay, then revise it multiple times as you draft out your paper. 

Here’s why this approach can work: as you write your paper, you’ll probably come up with new insights on your topic that you didn’t have right from the start. You can use these “light bulb” moments to reevaluate your intro and make revisions that keep it in line with your developing essay draft. 

Once you’ve written your entire essay, consider going back and revising your intro again . You can ask yourself these questions as you evaluate your intro: 

• Is my hook still relevant to the way I’ve approached the topic in my essay?
• Do I provide enough appropriate context to introduce my essay? 
• Now that my essay is written, does my thesis statement still accurately reflect the point of view that I present in my essay?

Using these questions as a guide and putting your intro through multiple revisions will help ensure that you’ve written the best intro for the final draft of your essay. Also, revising your writing is always a good thing to do—and this applies to your intro, too!

What's Next?

Your college essays also need great intro paragraphs. Here’s a guide that focuses on how to write the perfect intro for your admissions essays. 

Of course, the intro is just one part of your college essay . This article will teach you how to write a college essay that makes admissions counselors sit up and take notice.

Are you trying to write an analytical essay? Our step-by-step guide can help you knock it out of the park.

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How to Write a Research Paper Introduction Paragraph

Table of contents

• 1 What Is an Introduction Paragraph for Research Paper?
• 2.1 1. State Your Research Theme
• 2.2 2. Be Original
• 2.3 3. Explain Key Terms
• 2.4 4. Size Is Important
• 2.5 5. Refer to the Keywords
• 2.6 6. Follow the Rules of Logic
• 3 Common Mistakes and How Not to Slip Up
• 4 Research Paper Introduction Examples
• 5.1 What should the introduction of a paper accomplish?
• 5.2 How long does an introduction in a research paper have to be?
• 5.3 Can you start a research paper with a question?

Just like the alphabet begins with the letter “A,” any essay begins with an introduction. When you’re ready to write a research paper, you should start with an opening section. These are not common sentences but ones that form the entire thesis you will explore in the body paragraphs of a research project. You should guide the reader through the topic and present the importance of your university research and its results.

What Is an Introduction Paragraph for Research Paper?

Writing a research paper is a mandatory task in almost any educational specialty. You will definitely have to face this kind of task at some point. We know how difficult it can be to collect your thoughts and start doing work by arranging an introduction. That is why we are ready to come to your aid and tell you in detail the rules and share some useful tips on writing the opening passage.

The research paper introductions are pieces of information placed at the beginning of the paper. The size of this section depends on the general requirements for the work and usually is about 350-450 words. Moreover, everything you write in the introduction should attract the reader’s curiosity. This part of your work is designed to help the reader identify whether he or she wants to read the paper.

Check out the example of an abstract for a research paper . That is why it is incredibly important to approach this section’s writing responsibly and ensure that you clearly and interestingly position your research topic. A well-written research paper introduction will make you more likely to get a high score.

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How to Write a Research Paper Introduction?

After writing your research paper, you will have a broad picture of your entire research and analysis. Being an expert in the research niche of your scientific paper , you will be able to come to valid conclusions and highlight your work’s main points. This will help you to create an outline, identify the key notions, and include them in the introduction. You should also define a hook that can catch the reader to increase interest in reading your project.

However, the problem with writing the first section is the difficulty in determining the importance of information. While investigating, you will probably feel that all the data you provide is essential. But to write a good introduction, you need to be concise. Your general erudition of background information, combined with specific knowledge of the general subject area, will help you write a great introduction. There are a few simple guides that can help to make your research paper introduction shine:

1. State Your Research Theme

The first sentences should be common about the general topic, and then you should add some details about your topic. This is called the “inverted triangle” when you start a research paper with a broad theme and then narrow it down. Be concise in your presentation of the research problem to avoid any kind of ambiguity. Your study should be presented as a direct continuation of the introduction. It is crucial to keep the narrative logical.

2. Be Original

If you write a dissertation paper in humanities, you can start the introduction with a quotation or even an anecdote. If your academic area is science or medicine, you can write extremely interesting data or even shocking statistics. Such an approach will help you develop an attractive research paper introduction. However, be careful with fact-checking and sources. All the statistics you provide must correspond to reality. According to the methodology, shocking research should be done by you or reputable institutions.

3. Explain Key Terms

You should provide a list of the notions you used and the definitions that you based on to avoid reader confusion. In science, there is a phenomenon when one term can have different interpretations due to the background. Whenever you find yourself in trouble, ask us to write my research paper , and we’ll come to help. Moreover, the glossary will show your knowledge level in the scientific context and help expand the audience that your article may be useful to.

4. Size Is Important

It would help if you chose your ideal length for the introduction. It should be short enough to be readable and gain the reader’s attention and long enough to explain all the main features of your essay. And, of course, remember that the size of the introduction should be directly proportional to the size of your study. You need to briefly describe the main sections that your subject includes to guide your reader.

5. Refer to the Keywords

The keywords should be used in the introduction to give a general overview of the research questions. These could be separate words or word combinations which describe your topic. This trick aims to write a research paper that is easier to find. In addition, they help the reader quickly understand the direction of your research, showing the problem and the subject of investigation.

6. Follow the Rules of Logic

You should be consistent in the writing process. As we mentioned in one of the other sections, your work must be holistic. Each new thought should be a continuation of the previous one. A well-elaborated outline may help in solving this research problem. The first passage should logically introduce the reader to the subject and also give a preview of what will be described next. Logical links between sentences will make your text coherent.

An introduction paragraph of a research paper is essential for readers to get an overall idea of the paper. It helps grab their interest and gives them an understanding of the content’s purpose. Writing an informative and catchy introduction can be difficult, but hiring professional nursing essay writers can help remove the burden. They can provide an excellent introduction that introduces the topic in a detailed and easy-to-understand manner.

Common Mistakes and How Not to Slip Up

As you can already understand, writing a decent introduction is quite difficult. You should keep in mind the purpose of your university research to stay on the topic. We are going to see the most common research problem to be aware of when writing.

• An extended introduction

When you conduct scientific research, each word you write carries a large amount of necessary information. However, working out a quality introduction, you find that the size is very limited, and you need to spend time filtering unnecessary information.

• Lack of a hook

Good introductions are not limited to just a list of data you have received. It is this paragraph that presents the first impression. Try to make it informative and catchy. If you face some problems elaborating witty hooks for a paper, consult a  writing service that can provide you with professional advice.

• Inconsistent Data

The problem of inconsistency in the presentation of information appears when you first write the introduction and then the main body of the study. To avoid the error of lack of previous research, follow our advice. Study the background of the hypothesis you have chosen and then describe the results of your research.

Research Paper Introduction Examples

The theory is good, but the practice is quite different. Read our examples to get good ideas from other researchers about how to write an excellent structure and introduction.

Contemporary literary marketing has become digital because of the demands of the online era. Popular best-selling authors such as J. K. Rowling or Dan Brown profit from the internet and use it as a source for advertising to show the audience their creations. On the other hand, many writers find digital literature harmful and destructive for their livelihood because many users can get their books without paying for them. However, more studies reveal that the business side of the book industry is not far from the negative. This research paper will define whether the culture of digital book consumption has to be changed due to the creations of writers becoming worthless due to online piracy and because people have stopped valuing non-digitized books.

The second sample of the introduction paragraph is on the topic: “Behavioral Study of the Phenomenon of Obedience.”

Modern theories tend to associate misbehavior and intentional actions that harm others with personal characteristics. The psychologists and doctors in a survey predicted that only a small portion of people (about 1-3%) would intentionally harm someone after being told to do so. A good example of this phenomenon is a recent war trial with Adolph Eichmann, who claimed he was only following orders to carry out Nazi war crimes. Therefore, is it possible that people can harm others by only “following orders?” Are people capable of betraying their moral convictions if ordered to do so? During the experiment, we will see whether someone can continue administering painful electric shocks that harm another person simply because he or she is told to do so. It is expected that very few will continue and that most of the participants will not obey the order.

Writing an engaging introduction is equally important as conducting research papers or providing a high-quality context for your issue. In fact, a great intro is even more important for your success! An opening paragraph that attracts attention and keeps the reader engaged is the key to success with this academic work.

The intro is the first thing that a reader sees. It is exactly what helps them get the first impression of your work, which carries their opinion about the merits of your paper while they finish reading it. That’s why it’s so important to get it done right.

How do you create flawless intros for your research papers? These tips and examples in this article should help you deal with this assignment effortlessly while avoiding common mistakes. However, it also requires practice. We encourage students to practice writing as much as they can master these skills and never face difficulties with writing academic papers again!

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Research Paper: A step-by-step guide: 3. Thesis Statement & Outline

• 1. Getting Started
• 2. Topic Ideas
• 3. Thesis Statement & Outline
• 4. Appropriate Sources
• 5. Search Techniques
• 6. Taking Notes & Documenting Sources
• 7. Evaluating Sources
• 8. Citations & Plagiarism
• 9. Writing Your Research Paper

About Thesis Statements

Qualities of a thesis statement.

Thesis statements:

• state the subject matter and main ideas of a paper.
• appear in the first paragraph and announces what you will discuss in your paper.
• define the scope and focus of your essay, and tells your reader what to expect.  
• are not a simple factual statement.  It is an assertion that states your claims and that you can prove with evidence.
• should be the product of research and your own critical thinking.
• can be very helpful in constructing an outline for your essay; for each point you make, ask yourself whether it is relevant to the thesis.

Steps you can use to create a thesis statement

1. Start out with the main topic and focus of your essay.

youth gangs + prevention and intervention programs

2. Make a claim or argument in one sentence.  It can be helpful to start with a question which you then turn into an argument

Can prevention and intervention programs stop youth gang activities?  How?  ►►►  "Prevention and intervention programs can stop youth gang activities by giving teens something else to do."

3. Revise the sentence by using specific terms.

"Early prevention programs in schools are the most effective way to prevent youth gang involvement by giving teens good activities that offer a path to success."

4. Further revise the sentence to cover the scope of your essay and make a strong statement.

"Among various prevention and intervention efforts that have been made to deal with the rapid growth of youth gangs, early school-based prevention programs are the most effective way to prevent youth gang involvement, which they do by giving teens meaningful activities that offer pathways to achievement and success."

5. Keep your thesis statement flexible and revise it as needed. In the process of researching and writing, you may find new information or refine your understanding of the topic.

You can view this short video for more tips on how to write a clear thesis statement.

An outline is the skeleton of your essay, in which you list the arguments and subtopics in a logical order. A good outline is an important element in writing a good paper. An outline helps to target your research areas, keep you within the scope without going off-track, and it can also help to keep your argument in good order when writing the essay.  Once your outline is in good shape, it is much easier to write your paper; you've already done most of the thinking, so you just need to fill in the outline with a paragraph for each point.

To write an outline: The most common way to write an outline is the list format.  List all the major topics and subtopics with the key points that support them. Put similar topics and points together and arrange them in a logical order.    Include an introduction, a body, and a conclusion. 

A list outline should arrange the main points or arguments in a hierarchical structure indicated by Roman numerals for main ideas (I, II, III...), capital letters for subtopics (A, B, C...), Arabic numerals for details (1,2,3...), and lower-case letters for fine details if needed (a,b,c...). This helps keep things organized.  

Here is a shortened example of an outline:

Introduction: background and thesis statement

I. First topic

1. Supporting evidence 2. Supporting evidence

II. Second Topic

III. Third Topic

I. Summarize the main points of your paper II. Restate your thesis in different words III. Make a strong final statement

You can see examples of a few different kinds of outlines and get more help at the Purdue OWL .

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• Published: 22 August 2024

Implementation of the ARIMA model for prediction of economic variables: evidence from the health sector in Brazil

• Claudimar Pereira da Veiga   ORCID: orcid.org/0000-0002-4960-5954 1 ,
• Cássia Rita Pereira da Veiga   ORCID: orcid.org/0000-0002-9219-6279 2 ,
• Felipe Mendes Girotto   ORCID: orcid.org/0009-0003-6685-0788 3 ,
• Diego Antonio Bittencourt Marconatto   ORCID: orcid.org/0000-0002-9458-9199 1 &
• Zhaohui Su   ORCID: orcid.org/0000-0003-2005-9504 4  

Humanities and Social Sciences Communications volume  11 , Article number:  1068 ( 2024 ) Cite this article

Metrics details

• Business and management
• Health humanities

In recent decades, quantitative models for forecasting economic crises have garnered significant interest from researchers, policymakers, and public and private institutions. Identifying the most appropriate models for predicting economic time series behaviors during crises is a pressing challenge. Effective techniques can be instrumental in forestalling financial irregularities, thus empowering institutions to deploy remedial actions and swiftly minimizing further economic setbacks. Contemporary literature introduces various forecasting models, such as the autoregressive integrated moving average (ARIMA) model. Recognized for its statistical alignment with numerous linear models, the ARIMA model has demonstrated its efficacy across various domains. This paper delves into applying the ARIMA model to predict five critical economic time series that substantially influenced Brazil’s public and private healthcare sectors throughout the economic crisis between 2000 and 2020. These time series encompassed the variables (i) the gross domestic product—GDP, (ii) the Extended National Consumer Price Index—IPCA, (iii) the unemployment rate, (iv) the total number of health plan beneficiaries, and (v) total number of individual health plan beneficiaries. Importantly, this study provides a comprehensive outline of the ARIMA implementation process, underscoring that precise forecasting is pivotal for managers aiming to curtail financial anomalies and avert resource shortages. The findings highlight the ARIMA model’s (1, 0, 2), (2, 2, 1), (0, 1, 2), (1, 1, 2), and (2, 2, 1) viability in accurately forecasting health-related time series, exceeding 95% accuracy for economic variables analyzed. These results have significant practical implications for healthcare managers and decision-makers. By offering accurate forecasts of critical economic metrics, such as the unemployment rate and the transition of beneficiaries between public and private health systems during economic downturns, this research provides valuable insights for strategic planning within the healthcare sector.

Introduction

Research into future forecasting and evaluations of high-performing models remains pivotal in academic literature, with extensive studies underscoring their critical role (Makridakis et al., 1998 ; Armstrong, 2006 ; Magazzino et al., 2021 ; Latruwe et al., 2023 ). These quantitative models have been academically intriguing and posed practical implementation and validation challenges across various organizations, governments, and researchers (Makridakis et al., 2021 ; Witkowski et al., 2022 ). Despite these advancements, a notable gap persists in empirical studies that specifically focus on quantitative models for forecasting economic crises, especially those significantly impacting global financial and health systems (Hessel et al., 2014 ; Amarante et al., 2018 ; Morikawa, 2022 ; Ding et al., 2022 ).

Understanding the nexus between economic adversity and health infrastructure is imperative, as periods of economic downturn exert significant pressure on nations’ health systems (Su et al., 2023 ; Veiga et al., 2023 ). The implications of such crises are profound, affecting public and private health systems alike, with wide-reaching effects on societal structures and individual well-being (Ferreira et al., 2017 ; Jayawardena et al., 2023 ). Economic crises manifest as a spectrum of challenges characterized by declines in GDP, liquidity shortages, inflation fluctuations, rising unemployment, and abrupt market dynamics, all of which have far-reaching societal impacts (Kaplan, 2012 ; Gomez-Gonzalez et al., 2023 ; Souza et al., 2023 ; Abebe et al., 2023 ; Ojekemi et al., 2023 ). These crises are multidimensional processes that affect resource allocation, influencing well-being and quality of life (Brotto and Dewberry, 2016 ).

The emerging economies of the BRICS nations, particularly Brazil, face significant challenges in aligning with the sustainable development goals (SDGs), notably SDG 3, which aims to ensure health and well-being for all (Yang et al., 2023 ). Brazil’s experience with multiple economic crises over the past 50 years has left indelible marks on its economy and healthcare system (Ferreira and Mattos, 2014 ; Silva et al., 2022 ; EFIC, 2023 ). Each event has uniquely impacted Brazil’s healthcare landscape, from the Debt Crisis of the 1980s to the recent political and economic crisis of 2015–2016 and the subsequent health and economic upheavals (Valarini and Pohlmann, 2019 ; EFIC, 2023 ). In this backdrop, the Brazilian health system, comprising the public unified health system (SUS) and the private sector, including the supplementary health sector (SSS), has navigated these tumultuous times (Conass, 2011 ; Paim et al., 2011 ; Veiga et al., 2021 ). The economic downturns, particularly the 2019 Unemployment Crisis, led to significant shifts in beneficiary patterns between the SSS and SUS, influenced by the population’s changing purchasing power (Ferreira and Mattos, 2014 ; Silva et al., 2022 ; EFIC, 2023 ).

The onset of the global health crisis in 2019 further compounded these challenges, exposing the need for resilient health systems capable of adapting to rapid economic and societal changes (Opas, 2023 ; Dekimpe and Heerde, 2023 ). In this context, predicting health system trends during economic crises becomes paramount. However, few academic studies have been guided on using forecasting models in such times (Kock and Teräsvirta, 2014 ; Edelthalhammer et al., 2016 ; Ding et al., 2022 ).

Addressing this critical gap, our article employs the ARIMA model—autoregressive integrated moving average—a versatile tool across various disciplines, to predict health system behaviors during economic crises (Box and Jenkins, 1970 ; Askari and Montazerin, 2015 ). While ARIMA’s mathematical alignment with many exponential smoothing models is well recognized, its specific application in the context of economic crises, particularly in healthcare, needs to be explored (Makridakis et al., 1998 ).

This paper contributes significantly by focusing on the healthcare sector and offering valuable stakeholder insights. By employing the ARIMA model in the context of Brazil’s economic crises, we provide a novel perspective on applying linear forecasting models in healthcare during periods of economic turbulence. This research not only highlights the effectiveness of ARIMA but also presents a balanced view of its utility and potential impact in practical scenarios, contributing to a deeper understanding of crisis dynamics in Brazil’s health sector.

Forecasting model—ARIMA

Linear quantitative forecasting models, grounded in time series, operate under a central assumption: past behavioral patterns indicate future trends. This means that the demand observed in a previous period is expected to match that of a corresponding future period (Makridakis et al., 1998 ; Veiga et al., 2014 ). This category includes heuristic models such as time series decomposition, exponential smoothing, the Holt model, the Winters model, the Holt–Winters (HW) model, and integrated autoregressive moving averages (ARIMA). One of the distinct benefits of linear models is that users can understand intricate data relationships. Furthermore, these models stand out for their ease of interpretation and implementation (Chen and Tanuwijaya, 2011 ). Given these factors, this study opted for the ARIMA model, which aligns with most linear models (Makridakis et al., 1998 ).

The ARIMA model, which gained traction thanks to Box and Jenkins in 1970 (Box and Jenkins, 1970 ), follows a two-step process: (i) analyzing the time series and (ii) selecting the model that most appropriately represents the data. The ARMA model is suitable for stationary data. However, when dealing with non-stationary data, it’s essential to differentiate the data series, leading to the ARIMA. There are numerous ARIMA variations, with the general non-seasonal model denoted as ARIMA ( p , d , q ):

  p  = “order of the autoregressive part”

  d  = “degree of first differencing involved”

q  = “order of the moving average part”

A homogeneous non-stationary time series can often be represented using an ARIMA model of order ( p , d , q ) (Box and Jenkins, 1970 ). The challenge lies in pinpointing the optimal p , d , and q values to best characterize the series. A common approach to this challenge is to study the autocorrelation functions (ACF) and partial autocorrelation functions (PACF) of the given time series (Box and Jenkins, 1970 ; Veiga et al., 2014 ). Initially, one determines the degree of differencing ‘ d ’ needed to achieve stationarity in the series. Once ascertained, the correlation and partial autocorrelation functions help suggest possible values for ‘ p ’ and ‘ q ’ (Pindyck and Rubinfeld, 2004 ).

Interestingly, in most practical forecasting scenarios, ‘ p ,’ ‘ d ’, and ‘ q ’ values beyond 0, 1, or 2 are seldom required. This implies that a limited range of values can cater to a broad spectrum of practical applications (Makridakis et al., 1998 ). If, for some reason, a time series cannot be described using a low-order ARIMA model, the task of determining ‘ p ’ and ‘ q ’ necessitates a thorough examination of the autocorrelation and partial autocorrelation functions (Pindyck and Rubinfeld, 2004 ).

Re-examining the identification of ARIMA models for economic time series

After estimating the ARIMA model, it’s crucial to re-evaluate the identification to ascertain if the chosen model can be optimized further. One reasonable approach for determining the most effective ARIMA model is to opt for the one with the least sum of squared errors or the highest likelihood value. However, these criteria may only sometimes be reliable. Adding more terms to the model can affect these metrics, even if they don’t improve the model’s quality. Applying a penalty to the likelihood for every added term in the model is advisable to address this issue. If incorporating an additional term doesn’t enhance the possibility beyond the penalty, it shouldn’t be included in the model (Box et al., 1994 ; Veiga et al., 2016 ).

The most common probability penalty procedure is Akaike’s Information Criterion (AIC), proposed by Akaike in 1974. Assuming m  =  p  +  q  +  P  +  Q is the number of terms estimated in the model, it is possible to choose the values of p , q , P , and Q by minimizing AIC, presented in Eq. ( 1 ) (see Akaike, 1974 ):

where L stands for the probability.

Numerous variations of the AIC are utilized in research; notable among them are the Schwarz–Bayesian information criterion (BIC) and the final predictive error (FPE) (Brockwell and Davis, 1996 ). It is also worth noting that not all software applications generate the AIC or the likelihood value L. In situations where determining the AIC for a specific model is infeasible, an approximation of the AIC can be employed, as illustrated in Eq. ( 2 )

where \({{\sigma }}^{2}\) is the variance of the residual and n is the number of observations in series. It is important to emphasize that the AIC has little meaning by itself. It is only valid when comparing other models fitted to the same dataset.

While the chosen model might appear optimal among those considered, a final validation is crucial. This is achieved by examining the model residuals to ensure no unaccounted patterns remain. For a well-fitted prediction model, the residuals post-fit should essentially be white noise. To further validate the model fit, one can employ a Portmanteau test, which uses statistics derived from the residual autocorrelation function (Makridakis et al., 1998 ).

This study adopts an ex-post-facto approach, analyzing secondary data from the Institute of Applied Economic Research (IPEA) and the National Supplementary Health Agency (ANS). The subsequent sections provide detailed insights into the application process, beginning with implementing the ARIMA model, then sample selection and the experiment.

ARIMA model for economic time series data

The regression model takes the form (see Eq. ( 3 )):

where cap Y sub is the predicted variable, cap X sub 1 and cap X sub p are explanatory variables, b sub 0 to b sub p are linear regression coefficients, and \({e}_{t}\) represents the error. If, however, these variables are defined as \({X}_{1}={Y}_{t-1},{X}_{2}={Y}_{t-2},{X}_{3}={Y}_{t-3},\ldots ,{X}_{p}={Y}_{t-p}\) , Eq. ( 3 ) becomes (see Eq. ( 4 )):

Equation ( 4 ) still represents a regression equation. Still, it differs from Eq. ( 3 ) as it has different explanatory variables that are, in fact, previous values of the prediction variable \({Y}_{t}\) , called autoregressive (AR). Just as it is possible to regress past values of a series again, there is a time series model that uses past errors as explanatory variables (see Eq. ( 5 )):

In Eq. ( 5 ), a dependence relationship is established between successive errors, and the equation is called a moving average (MA) model. Many stationary random processes cannot be modeled purely as moving averages or purely as autoregressive, as they have the qualities of both methods. In this situation, the AR model can be effectively linked to the moving average model to form a common and general class of time series models called the autoregressive moving average (ARMA) model.

The ARMA model can only be used on stationary data. In practice, many time series are non-stationary, so the character of the underlying stochastic process changes over time. To extend the use of the ARMA model to non-stationary series, it is necessary to differentiate the data series. In this situation, the model is called autoregressive integrated moving average (ARIMA), popularized by Box and Jenkins in 1970 (Box and Jenkins, 1970 ).

It can be said that \({Y}_{t}\) is stationary homogeneous of order d if \({w}_{t}={\Delta }^{d}{Y}_{t}\) is a stationary series. Considering that Δ denotes differentiation (see Eqs. ( 6a ) and ( 6b ):

With a \({w}_{t}\) series, it is possible to return to \({Y}_{t}\) by summing \({w}_{t}\) a total of d times. This can be written as \({Y}_{t}={\Sigma }^{d}{w}_{t}\) , onde ∑ where is the summation operator (see Eqs. ( 7a ) and ( 7b )):

It is worth noting that the summation operator ∑ is merely the inverse of the difference operator Δ. As \(\Delta {Y}_{t}={Y}_{t}-{Y}_{t-1}\) , it can be written that \(\Delta =1-B\) and thus \(\sum ={\Delta }^{-1}={(1-B)}^{-1}\) .

When calculating this sum for a practical series, the first observation of the original series is started without differentiating ( \({Y}_{0}\) ), and then successive values of the series in difference are added. This way, if \({w}_{t}=\Delta {Y}_{t}\) , \({Y}_{t}\) can be calculated (see Eq. 8 ):

If \({Y}_{t}\) were differentiated twice, such that \({w}_{t}={\Delta }^{2}Y\) , it would be possible to calculate \({Y}_{t}\) from \({w}_{t}\) by summing this term twice. After differentiating the series \({Y}_{t}\) to produce the stationary series \({w}_{t}\) , it is possible to model \({w}_{t}\) as an ARMA process. If \({\rm{w}}\_{w}_{t}={\Delta }^{d}{Y}_{t}\) is an ARMA( p,q ) process. It can be said that \({Y}_{t}\) is an integrated autoregressive and moving average process of order ( p,d,q ) or simply ARIMA( p,d, q ). If Y \({Y}_{t}=\sum {w}_{i}\) grows linearly over time, the series has a linear trend in time independent of random disturbances, which is deterministic.

Model specification: ARIMA

To apply the ARIMA model in forecasting, it is necessary to expand its equation to make it a conventional regression equation; that is, for the ARIMA model (0,1,1) (0,1,1)12, there is the Eq. 9 :

To use Eq. ( 9 ) in forecasting a period ( Y _( t −1)), shown in Eq. ( 10 ):

In Eq. ( 10 ), the term \({{e}}_{{t}+1}\) will not be known because the expected value of future random errors must be taken as zero, but from the adjusted model; it is possible to substitute the values \({{e}}_{{t}}\) , \({{e}}_{{t}-11}\) , and \({{e}}_{{t}-12}\) by their determined empirical values, which are the residuals for times t , t −11 and t −12, respectively. For forward predictions, there will be no empirical value for the ‘ e ’ term after a while, so the expected values will be considered zero. Regarding the values Y , starts a forecasting process, the values are known \({{Y}}_{{t}}\) , \({{Y}}_{{t}-11}\) and \({{Y}}_{{t}-12}\) . After a while, however, the Y value in Eq. ( 10 ) will be a predicted value, not known from past values. For large prediction intervals, it is usual to use computational packages.

After identifying the ARIMA model, the maximum-likelihood estimation (MLE) method was selected, which seeks parameters that maximize the likelihood function. To apply the model in prediction, it is necessary to expand its equation to make it a conventional regression equation; for the ARIMA model (0,1,1) (0,1,1), we have Eq. ( 9 ). To use Eq. ( 10 ) in forecasting one period ( \({{Y}}_{{t}-1}\) ). As the coefficients \({\phi }_{1}\) , \({\Phi }_{1}\) , \({\theta }_{1}\) , and \({\Theta }_{1}\) are estimated from the data; Eq. ( 9 ) can be used for prediction. Notably, for clarity in Eq. ( 10 ), the constant term needs to be included. However, where μ represents the average of the Y values, the constant term should reappear on the right-hand side of Eqs. ( 9 ) and ( 10 ) (see variables 12 and 13).

Equation (12), the term \({{e}}_{{t}+1}\) will not be known because the expected value of future random errors must be taken as zero, but from the fitted model, it is possible to substitute the values \({{e}}_{{t}}\) , \({{e}}_{{t}-11}\) , and \({{e}}_{{t}-12}\) by their determined empirical values, which are the residuals for the times t , t −11, and t −12, respectively. For forward predictions, there will be no empirical value for the term, and after a while, the expected values will be considered zero.

Regarding the Y values, when starting a forecasting process, the \({{Y}}_{{t}}\) , \({{Y}}_{{t}-11}\) and \({{Y}}_{{t}-12}\) . Values are known. After a while, however, the Y value in Eq. ( 10 ) will be a predicted value, not known from past values. For large prediction intervals, it is usual to use computational packages.

The essential elements of AR and MA models can be combined to produce various models. The ARIMA ( p , d , q ) model is obtained if a non-stationary series is added to the ARMA model. Equation ( 11 ) represents the simplest case of an ARIMA (1,1,1) model:

where \(\left(1-{\phi }_{1}B\right)\) represents the AR(1) part, \(\left(1-B\right){Y}_{t}\) represents the first difference and \(+(1-{\theta }_{1}B){e}_{t}\) refers to the MA(1) portion (Pindyck and Rubinfeld, 2004 ).

Sample selection—economics time series

To achieve the proposed objective, the following economic variables were selected (Veiga et al. 2023 ):

GPD—gross domestic product—is an economic indicator that quantifies the market value of all final goods and services produced within a country’s borders each time, serving as a comprehensive measure of its overall economic activity.

IPCA : Extended national consumer price index—is a primary inflation indicator in Brazil. It measures the price change of a diverse set of products and services consumed by households with a specific income range, reflecting the country’s cost of living and economic trends.

Unemployment rate : The unemployment rate is a vital economic indicator representing the percentage of the jobless labor force actively seeking employment. This rate is critical for assessing an economy’s health, indicating job availability, and influencing economic policy decisions.

Total number of beneficiaries of health plans : Refers to the aggregate count of individuals covered under health insurance policies. This figure encompasses those enrolled in various types of health coverage, including employer-provided plans, private health insurance, government-sponsored programs, and other health care plans, reflecting the extent of health insurance penetration in a population.

Total number of individual health plan beneficiaries : This refers to the number of people with health insurance policies, distinct from group or employer-provided plans. It includes those who purchase and maintain their health insurance, typically through private health insurers or individual plans offered by government programs.

The analyzed variables were chosen based on their significance within the Brazilian economic landscape and their health implications, as Veiga et al. ( 2023 ) discussed. The 20 years, from 2000 to 2020, was chosen because it encompasses the most significant crises that Brazil has faced in the last two decades. More specifically, this selection considered the unemployment crisis of 2019. During this period, a decrease in purchasing power was recorded, which led thousands of people to transition from SSS to SUS.

The variables data can be accessed on the Institute of Applied Economic Research’s website, IPEA, at http://www.ipeadata.gov.br/ . As for the supplementary health sector, the data encompasses individual and collective health plans, including their variations. These datasets are available on the official website of the sector’s regulatory body, the National Supplementary Health Agency (ANS), at http://www.ans.gov.br/ .

The Brazilian market is chosen due to its varied economic crises, a complex healthcare system blending public and private sectors, and a rich dataset for time series analysis, with findings applicable to similar emerging economies and addressing a gap in the literature on economic crises’ impact on healthcare.

Experiment modeling

To achieve the proposed objective, the ARIMA model was applied to forecast the selected time series over 15 years (2000–2015). For greater accuracy, the model was adjusted for 10 years (2000–2010) to predict the next 5 years (2011–2015) to validate the best fit and adherence of the technique to the time series. After validation, a new forecast was made for the next 5 years (2016–2020).

Predicting data behavior represents one of the leading research efforts in time series forecasting. Many theoretical and heuristic models have been developed in the last decades. Faced with different possibilities of forecasting models, it is necessary to identify, by performance indices, which methodology is most appropriate for each case. A better-performing model should have a mean error of approximately zero and a low standard residual mistake (Delurgio, 1998 ). In this sense, for validation and adherence of the ARIMA model, the mean percentage absolute error—MAPE (Eq. (7)) and the U-Theil (Eq. (8)) metrics were used, based on the Autoregressive ( p ), Integrated ( d ) values of Means Furniture ( q ) that models the ARIMA (p , d, q ). Next, the metrics to evaluate the forecast error are described.

Percent mean absolute error (MAPE): the mean absolute error as a percentage of demand (Chopra and Meindl, 2003 ). In practice, a MAPE value of less than 10% can suggest potentially perfect predictions, <20% potentially good, and above 30% potentially inaccurate (Lewis, 1997 ). MAPE can be expressed as follows, as shown in Eq. ( 13 ):

where \({{\rm{|E}}}_{{\rm{t}}}{\rm{|}}=\) absolute value of the error in period t ; \({\rm{|}}{{\rm{D}}}_{{\rm{t}}}{\rm{|}}=\) absolute value of real demand in period t ; \({\rm{n}}=\) all the periods.

U-Theil is a relative percentage measure of the one-step-ahead discrepancies committed with the forecast (Theil, 1966 ). It is also called the coefficient of inequality. U-Theil is decisive in determining whether to use a forecasting technique. This model evaluates the fit of the predicted series to the original series. The closer to zero, the greater the adjustment of the predicted series about the original series. On the other hand, values more relative to unity indicate that the model did not make good predictions. The U-Theil is expressed in Eq. ( 14 ):

where \({{y}}_{{l}}^{* }\) is the predicted value for the period t , \({{y}}_{{l}}\) is the observed value and N is the number of observations.

Results and discussion

All parameters were selected to minimize the MAPE and U-Theil values throughout adjusting, applying, modeling, and training the model. The ARIMA model was implemented using the GRETL® computational platform, accessible at https://gretl.sourceforge.net .

This study analyzed five sets of economic time series (15 time series) to understand the performance of the SUS and SSS health systems. It mainly focused on the economic downturns impacting Brazil from 2010 to 2020, emphasizing the 2019 unemployment crisis (see research structure incorporating the ARIMA Model in Fig. 1 ).

Research structure incorporating the ARIMA Model].

Any homogeneous non-stationary time series can be represented by an ARIMA process of the order ( p , d , q ). The challenge lies in selecting the optimal values for p , d , and q to define the ARIMA model effectively. This is addressed, in part, by scrutinizing both the FAC and the FACP of the time series in question. The initial step involves determining the differentiation degree, denoted as ‘ d ’, required to render the series stationary. Potential model specifications are deduced by assessing the FAC (representing ‘ p ’) and FACP (indicating ‘ q ’). The optimal adjustment values for p , d , and q , as showcased in Tables 1 and 2 , were chosen based on the minimum values of the MAPE and U-Theil errors.

The ARIMA model’s forecasting results for the variables analyzed are depicted in Figs. 2 – 6 and Table 2 . Detailed model validations are provided in Appendix 1 . As presented in Fig. 2 and Table 2 , the forecasting errors, as indicated by a MAPE of 9.06 and a U-Theil value of 0.617, validate a high level of precision when juxtaposed against the original series.

Forecast made for the GDP in the period from 2016 to 2020.

Forecast made for the IPCA rate in the period from 2016 to 2020.

Forecast made for the unemployment rate from 2016 to 2020.

Forecast made for the total plan beneficiaries’ series for the period from 2016 to 2020.

Forecast made for the series of individual plan beneficiaries for the period from 2016 to 2020.

Figure 2 visually captures the model’s alignment based on FAC and FACP evaluations, using a 5% significance boundary for residual analysis. The model confidently reached a minimum of 95% prediction accuracy, which is distinctly emphasized in green in Fig. 2 . The model underwent validation from 2000 to 2010 to facilitate a comparative analysis with the real series from 2010 to 2015. These results pave the way for GDP prediction utilizing the ARIMA (1, 0, 2) model. To corroborate the model’s fit, the entire series from 2000 to 2015 was considered, enabling the creation of a fresh forecast for the subsequent five years, specifically from 2016 to 2020.

In Fig. 3 , the forecast errors, characterized by a MAPE value of 15.04 and a U-Theil value of 0.167 (detailed in Table 2 ), reflect a commendable degree of precision when contrasted with the original data series. This figure visualizes the model’s alignment based on the FAC and FACP evaluations, adhering to a 5% significance threshold for residual scrutiny. Impressively, the model consistently achieves a minimum of 95% prediction accuracy, a feat distinctly emphasized by the green highlight within the figure. For validation, the model was applied to the timeframe spanning from 2000 to 2010, which served as a basis for comparison with the real-time series from 2010 to 2015. The outcomes suggest employing the ARIMA (2, 2, 1) model for predicting IPCA values. To corroborate this fit, the entire series from 2000 to 2015 was utilized, setting the stage for a fresh forecast covering the subsequent half-decade, specifically 2016 to 2020.

Figure 4 showcases the forecast errors, evidenced by a MAPE value of 4.14 and a U-Theil score of 0.031 (refer to Table 2 ), indicating a remarkable level of accuracy when juxtaposed against the actual unemployment rate series. This figure elucidates the model’s calibration based on the FAC and FACP, employing a 5% significance threshold for the residual assessment. Notably, the model achieves a minimum of 95% in prediction accuracy, a detail accentuated by the green shading in Fig. 4 . When applied to data from 2000 to 2010 for validation, the model’s comparison with the real-time series spanning 2010 to 2015 boasted a striking forecast accuracy of 95.86%. This suggests the feasibility of predicting the unemployment rate, especially during economic downturns. To further validate this model, the comprehensive series from 2000 to 2015 was harnessed to craft a forecast for the subsequent half-decade, explicitly focusing on the unemployment rate from 2016 to 2020. Though there wasn’t an available series for 2016–2020 to validate the model, the results still imply the potential for precise forecasting of future unemployment rate sequences using the ARIMA (0, 1, 2) model.

In both Fig. 5 and Table 2 , forecast errors as gauged by MAPE at 1.27 and U-Theil at 0.0069 underscore a significant level of accuracy when juxtaposed with the actual series for ‘Total Beneficiaries.’ Figure 5 further elaborates on the calibration of the model, based on FAC and FACP, set within a 5% significance parameter for the residual analysis. Impressively, the model aligns within the anticipated accuracy threshold, reaching at least a 95% accuracy, a detail emphasized by the green shade in Fig. 5 . When we juxtapose the model’s predictions from 2000 to 2010 with the actual series from 2010 to 2015, we find a stellar forecast accuracy of 98.93%, as indicated by the MAPE. This suggests the model’s adeptness at precisely forecasting the Total Beneficiaries count under health plans. Further, to ascertain the model’s adjustment, the entire series from 2000 to 2015 was employed to devise a forecast spanning the subsequent half-decade (2016–2020). While data for the 2016–2020 timeframe wasn’t available for direct model validation, literature on forecasting metrics (Makridakis et al., 1998 ) supports the hypothesis that the ARIMA (1, 1, 2) approach can accurately predict future series for the total number of health plan beneficiaries.

Figure 6 showcases forecast errors as indicated by a MAPE of 2.89 and a U-Theil of 0.577, reflecting a remarkable accuracy compared to the real series for Individual health plan beneficiaries. The adjustments made to the model, grounded in the FAC and FACP parameters, are illustrated within a 5% significance threshold for residual analysis. The model’s predictions adhere within a minimum 95% accuracy bracket, an aspect emphasized by the green highlight in Fig. 6 . Based on data from 2000 to 2010 and compared with the real series spanning 2010 to 2015, the model’s forecast achieved an accuracy of 97.11%. Such results underscore the potential of the ARIMA (2, 2, 1) method in precisely forecasting the number of individual health plan beneficiaries.

To further validate the model’s adjustments, the entire series from 2000 to 2015 was used as a foundation to project the subsequent five years (2016–2020) concerning individual health plan beneficiaries. Although data were absent for the 2016–2020 timeframe for direct model validation, the existing literature and results instill confidence in the ARIMA (2, 2, 1) method’s ability to forecast the future series for individual health plan beneficiaries accurately.

Table 3 displays the data variables discussed in this article, which are visually represented in Figs. 2 – 6 . For the upcoming period, from 2016 to 2020, the results derived from applying the ARIMA model are shown for the variables GDP, IPCA, Unemployment rate, Total Beneficiaries of health plans, and Individual Health Plan Beneficiaries. Alongside these predictions, percentage variations for each series have been calculated.

It’s crucial to understand the methodology applied in the forecasting. Specifically, data from 2000 to 2010 was utilized to calibrate the model. The subsequent period, 2011 to 2015, was the validation phase, where the ARIMA model’s predictions were matched against real-world data. Finally, predictions from 2016 to 2020 were generated using the ARIMA model, thereby providing forecasts for the five economic indicators under study.

Table 3 underscores the critical role of forecasting economic series in facilitating precise budgetary planning within the public and private healthcare sectors, especially in Brazil. An analysis of fundamental economic factors that may impact forecast values is presented.

GDP : The data on GDP in Table 3 provides valuable insights into Brazil’s economic trajectory. In 2020, Brazil experienced a 3.3% contraction in its GDP, indicating economic challenges. Despite this contraction, the GDP remained substantial at R$ 7.6 trillion (Brazilian currency) (IBGE, 2022 ). A growing GDP typically signals a healthy economic environment, while a decline often signifies a recession. Economic downturns can significantly affect healthcare systems, particularly the SUS and SSS, as they may face increased demand for services due to economic hardships. The ability to forecast GDP trends, as demonstrated by the ARIMA model, is crucial for governments, organizations, and businesses in making strategic decisions during economic fluctuations.

IPCA : The IPCA time series measures inflationary trends by evaluating the prices of goods and services over specific periods. Changes in IPCA directly impact household consumption patterns and can erode purchasing power. When purchasing power declines, individuals may shift from private healthcare plans (SSS) to the public healthcare system (SUS), especially during high unemployment. This transition places additional strain on the SUS infrastructure. The ARIMA model’s beneficiary count predictions align with ANS data for 2023, which indicates over 50 million exclusive SSS medical aid beneficiaries, constituting ~26% of Brazil’s population. Despite economic challenges, such as the 2019 unemployment spike and the COVID-19 pandemic, the SSS has shown resilience and growth (Veiga et al., 2023 ). The sustainability of the SSS and its continuous growth amid economic adversities reflect the complex dynamics within the Brazilian healthcare system.

Sustainability of Health Plan Operators (OPSs): The Brazilian private healthcare sector, with over 700 active Health Plan Operators (OPSs) and nearly 20,000 distinct health schemes, is a significant player in healthcare preferences, ranking third among consumer priorities, trailing only home ownership and formal education (IESS, 2021 ). The OPSs have grappled with escalating healthcare expenses and sought strategies for cost containment, sometimes affecting access to specific healthcare resources. The pursuit of sustainability and the pressure on state governance by OPS decision-makers date back to the regulatory inception of the private healthcare sector in the 1990s. However, the COVID-19 pandemic has heightened the urgency for OPSs to adapt to regulatory changes and evolving beneficiary behaviors. Integrating predictive models like ARIMA into strategic planning has become indispensable in providing decision-makers with crucial insights, especially during challenging times when fiscal prudence is essential for the sector’s longevity (Machado, 2023 ).

Forecasting economic factors using models like ARIMA is vital for healthcare stakeholders in Brazil, as it allows them to anticipate and respond to economic fluctuations and their impact on healthcare utilization and sustainability. The ARIMA model’s predictions offer valuable insights for informed decision-making in the public and private healthcare sectors.

Table 4 presents the descriptive analysis based on the economic variables, also presented in Table 3 , which brings the results of applying the ARIMA model. The descriptive analysis shows that the GDP data over 15 years shows a mean growth of ~1.67%, with a significant standard deviation of 2.76%. This suggests variability in economic performance. The range of GDP growth extends from a low of −3.80% to a high of 6.50%, indicating some years of economic contraction and others of robust growth. The distribution is slightly skewed to the left (−0.17), suggesting a few years with meager growth rates.

The average IPCA over the years is 6.83%, with a standard deviation of 2.55%, indicating fluctuating inflation rates. The maximum inflation rate observed is 12.53%, possibly due to specific economic conditions in that year. A positive skew (0.94) suggests that inflation rates are typically lower, with occasional years of high inflation. The mean unemployment rate is 8.43%, with relatively less variability (standard deviation of 1.33%). The range is between 6.70% and 10.48%, indicating a moderate fluctuation in unemployment levels. The distribution of the unemployment rate is nearly symmetric (skewness of 0.12), with a slight tendency towards higher rates.

For the Total Beneficiaries of Health Plans, this figure has a significant mean of ~40 million, with a standard deviation of around 7.45 million, suggesting a substantial change over the years. The range from 30.97 million to 50.50 million indicates a significant increase in health plan beneficiaries. The distribution is close to symmetric, with a slight positive skew (0.08) and a kurtosis indicating a distribution like a normal distribution. To Individual Health Plan Beneficiaries, the mean of 67.57 million with an exceptionally high standard deviation (220.77 million) suggests a highly variable number of individual beneficiaries, possibly influenced by outliers. The skewness (3.74) and kurtosis (14.00) are significantly high, indicating a distribution with a pronounced tail and a peak different from the normal distribution, likely due to one or more outlier years.

In Collective Health Plan Beneficiaries, the average of around 31.64 million beneficiaries with a standard deviation of 6.32 million shows variability but is less extreme than individual beneficiaries. The distribution has a slight positive skew (0.20) and a kurtosis-like normal distribution, suggesting a relatively regular distribution of data points around the mean.

The dataset reflects significant variability in economic indicators (GDP and IPCA) and healthcare plan beneficiaries over the years. The high standard deviation and skewness in the health plan beneficiary data, especially for individual plans, hint at substantial year-to-year changes, possibly driven by policy changes, market dynamics, or other factors. The unemployment rate shows less variability compared to other economic indicators, suggesting a more stable but persistent issue in the job market.

This paper investigated applying the ARIMA model to predict five critical economic time series that exerted substantial influence on Brazil’s public and private healthcare sectors throughout the economic crisis spanning from 2000 to 2020. These time series encompassed (i) GDP, (ii) IPCA, (iii) the unemployment rate, (iv) the total number of health plan beneficiaries, and (v) individual health plan beneficiaries.

The ARIMA model was selected due to its proven statistical rigor, adeptly blending theoretical and empirical frameworks in the literature. Our analysis emphatically highlights the prowess of ARIMA in predicting vital economic time series for the health sector. As described in academic literature, predictions were measured against esteemed MAPE and U-Theil benchmarks. The specified orders of our ARIMA model—(1, 0, 2), (2, 2, 1), (0, 1, 2), (1, 1, 2), and (2, 2, 1)—yielded accurate forecasts, as showcased in Table 1 and further validated by Table 2 metrics.

Of note was ARIMA’s aptitude in predicting the unemployment rate and total and individual beneficiaries, which are crucial metrics for the health sector. For example, the 2019 economic downturn led to a considerable population experiencing job losses and reduced purchasing power, prompting a shift from supplementary to public health systems. Forecasting such indices provides invaluable insights for strategic planning. Our results bolster the assertion that ARIMA can adeptly anticipate economic indicators influencing Brazil’s health domain, notably the SSS and SUS systems. The model’s remarkable accuracy, exceeding 95%, and simplicity and ease of implementation accentuate its value. Refining the ARIMA parameters can enhance its efficacy, especially within specific sectors like SSS and SUS.

However, potential pitfalls warrant attention. Parameter estimations inherently possess uncertainty, and the model may not fully capture this. Furthermore, the assumption that historical data patterns persist might falter during crises. If ARIMA aligns impeccably with reality, it is a formidable prediction tool; deviations might lead to subpar results. Many studies in the literature highlight ARIMA’s competitive accuracy. Still, a universally superior forecasting model remains contested. As best practices suggest, optimal models are economical, user-friendly, and cost-effective.

While this study illuminates this subject, its complexity demands further probing. The goal was a partial assessment of ARIMA across every economic downturn in Brazil. Evaluating non-linear AI-driven models alongside Fuzzy Logic presents a promising research trajectory for future research. Analyzing significant global phenomena, such as the COVID-19 pandemic, remains imperative.

This paper offers a novel contribution by filling a literature void on forecast models tailored to empirical scenarios, offering pivotal insights for specific sectors, like health. The findings will support health sector stakeholders by championing a versatile model like ARIMA. The research stands out for its pioneering use of a linear forecasting model during a crisis, providing implications for Brazil’s health domain. This methodology has broader implications, showcasing its adaptability across various domains. ARIMA is a prevalent choice for time series forecasting across diverse fields. The literature consistently emphasizes that every model is only sometimes perfect. Like others, the ARIMA model possesses both merits and limitations.

ARIMA’s primary strength is its malleability. Parameters ( p , d , q ) can be adjusted to fit diverse time series, and their transparency offers a clear statistical understanding of data interrelationships. It is also notably efficient, with many studies praising its forecasting precision for compliant series. ARIMA’s resilience to disturbances makes it apt for volatile series, and its flexibility finds applications in sectors from finance to meteorology. However, challenges persist. ARIMA requires a stationary series, and discerning optimal parameters often requires rigorous testing. Recognizing ARIMA’s potential limitations when facing abrupt data shifts is vital. While ARIMA is proficient at short-term predictions, its precision may diminish over extended periods, although specific authors in the literature acknowledge its potential for long-term forecasting.

Given its linear nature, ARIMA may overlook external influences on a time series. To address this limitation, models like autoregressive integrated moving average with exogenous variables (ARIMAX) can be employed. When evaluating the suitability of ARIMA, it is crucial to balance its advantages and limitations. This topic is extensive, and while our article sheds light, further exploration remains paramount, especially within the health sector.

While the study focuses on Brazil, the findings have broader implications. The insights gained can be applied to other emerging economies with similar healthcare structures and economic challenges. Thus, the study contributes to the understanding of not only Brazil’s healthcare system but also a broader global context.

Policy implications

(i) The accurate forecasts ARIMA provides can aid healthcare managers and policymakers in strategic planning, especially during economic downturns. This can lead to better resource allocation and preparedness for shifts in public health demand. (ii) For healthcare systems, especially in emerging economies like Brazil, ARIMA’s predictions can inform adjustments in service provision in response to economic changes, such as shifts in unemployment rates and health plan beneficiaries.

Future research avenues

(i) Evaluating non-linear and AI-driven models: There is a promising avenue for comparing the performance of non-linear models, including AI-driven approaches and fuzzy logic, with ARIMA in forecasting complex economic behaviors. (ii) Future research should extend to analyzing the impacts of significant global events, like the COVID-19 pandemic, employing ARIMA and other models to understand and manage healthcare systems during such crises. (iii) Expanding empirical studies in healthcare forecasting: More empirical research is needed on ARIMA and other models for specific healthcare sector challenges, particularly during economic crises. (iv) Further exploration into balancing ARIMA’s advantages, such as its adaptability and efficiency, with its limitations in handling abrupt data shifts and long-term forecasting, is necessary.

This study makes a novel contribution by addressing a gap in the literature on forecast models tailored to specific empirical scenarios and offers vital insights for sectors like healthcare. With its merits and limitations, the ARIMA model is a versatile tool for forecasting time series across various domains. This research highlights the model’s effectiveness during economic crises and opens doors for further exploration within the health sector and beyond.

Data availability

The data sets generated and analysed during the current study are available upon request.

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The authors wish to express their gratitude to the Editor and reviewers for their kind feedback and constructive input. The author CPdV thanks the National Council for Scientific and Technological Development (CNPq), Brazil, for research grant number 312023/2022–7.

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Pereira da Veiga, C., Pereira da Veiga, C.R., Girotto, F.M. et al. Implementation of the ARIMA model for prediction of economic variables: evidence from the health sector in Brazil. Humanit Soc Sci Commun 11 , 1068 (2024). https://doi.org/10.1057/s41599-024-03023-3

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Received : 28 November 2023

Accepted : 02 April 2024

Published : 22 August 2024

DOI : https://doi.org/10.1057/s41599-024-03023-3

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