how to write an abstract conclusion

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10 Great Essay Writing Tips

Knowing how to write a college essay is a useful skill for anyone who plans to go to college. Most colleges and universities ask you to submit a writing sample with your application. As a student, you’ll also write essays in your courses. Impress your professors with your knowledge and skill by using these great essay writing tips.

Prepare to Answer the Question

Most college essays ask you to answer a question or synthesize information you learned in class. Review notes you have from lectures, read the recommended texts and make sure you understand the topic. You should refer to these sources in your essay.

Plan Your Essay

Many students see planning as a waste of time, but it actually saves you time. Take a few minutes to think about the topic and what you want to say about it. You can write an outline, draw a chart or use a graphic organizer to arrange your ideas. This gives you a chance to spot problems in your ideas before you spend time writing out the paragraphs.

Choose a Writing Method That Feels Comfortable

You might have to type your essay before turning it in, but that doesn’t mean you have to write it that way. Some people find it easy to write out their ideas by hand. Others prefer typing in a word processor where they can erase and rewrite as needed. Find the one that works best for you and stick with it.

View It as a Conversation

Writing is a form of communication, so think of your essay as a conversation between you and the reader. Think about your response to the source material and the topic. Decide what you want to tell the reader about the topic. Then, stay focused on your response as you write.

Provide the Context in the Introduction

If you look at an example of an essay introduction, you’ll see that the best essays give the reader a context. Think of how you introduce two people to each other. You share the details you think they will find most interesting. Do this in your essay by stating what it’s about and then telling readers what the issue is.

Explain What Needs to be Explained

Sometimes you have to explain concepts or define words to help the reader understand your viewpoint. You also have to explain the reasoning behind your ideas. For example, it’s not enough to write that your greatest achievement is running an ultra marathon. You might need to define ultra marathon and explain why finishing the race is such an accomplishment.

Answer All the Questions

After you finish writing the first draft of your essay, make sure you’ve answered all the questions you were supposed to answer. For example, essays in compare and contrast format should show the similarities and differences between ideas, objects or events. If you’re writing about a significant achievement, describe what you did and how it affected you.

Stay Focused as You Write

Writing requires concentration. Find a place where you have few distractions and give yourself time to write without interruptions. Don’t wait until the night before the essay is due to start working on it.

Read the Essay Aloud to Proofread

When you finish writing your essay, read it aloud. You can do this by yourself or ask someone to listen to you read it. You’ll notice places where the ideas don’t make sense, and your listener can give you feedback about your ideas.

Avoid Filling the Page with Words

A great essay does more than follow an essay layout. It has something to say. Sometimes students panic and write everything they know about a topic or summarize everything in the source material. Your job as a writer is to show why this information is important.

Make a Great First Impression: 6 Tips for Writing a Good Abstract

Sarah Conte, PhD

Senior Research Communication Partner

PhD, Cell and Molecular Biology University of Texas at Austin

Article Tags

Finishing touches

Editing and formatting

Writing and translation

Popular Categories

Writing a manuscript

Choosing a journal

Peer review and publication

Sharing your research

Research process

Publication ethics

The abstract is perhaps the most important section of your manuscript for several reasons. First, the abstract is the first section that is read by journal editors when deciding whether to send your manuscript for review. Similarly, once your work is published, it is the first section that is examined by readers; in many cases, it is the only section of the manuscript that they will ever read. This is in part because most literature databases index only abstracts, and access to full-text articles is often restricted.

In this way, the abstract emerges as a tool to communicate your research succinctly while highlighting its most important facets. The following article describes how to write a great abstract that will attract maximal attention to your research.

1. Write the paper first

Some authors will tell you that you should write the abstract as soon as your research is complete. However, it is likely that your project has been spread out over months or even years; thus, the full picture of what you have accomplished may not be fresh in your mind. Writing the paper first solves this problem, effectively refreshing your memory as you condense all of the aspects of your work into a single document. The manuscript can then be used as a guide to write the abstract, which serves as a concise summary of your research.

2. Provide introductory background information that leads into a statement of your aim

The first section of your abstract is very valuable real estate. These 1-3 sentences must inform the reader about why you have undertaken this research.

For example, “The importance of epistasis¬—non-additive interactions between alleles—in shaping population fitness has long been a controversial topic, hampered in part by lack of empirical evidence” 1 is an excellent example of an introductory sentence that both states the main topic (the role of epistasis in shaping population fitness) and describes the problem (the lack of empirical evidence in this area). Thus, it immediately grabs the attention of the reader. The next sentence might go on to describe what information is lacking in the field or what previous researchers have done to try to address the problem.

Such statements can lead very naturally into a statement of how your research uniquely addresses the issue. Use of introductory phrases such as “Here, we aimed to…” or “Here, we demonstrate that…” indicates to the reader that you are stating the aim or purpose of your work.

AJE's abstract editing service is specifically designed to help you polish your abstract and meet word count limits.

3. Briefly describe your methodology

The methods section of your abstract is your chance to summarize the basic design of your study. Excessive detail is unnecessary; however, you should briefly state the key techniques used. Abstracts in biological or clinical fields should mention the organism, cell line, or population studied. For ecology papers, the location of the study is often an important piece of information. Papers describing clinical trials should mention the sample size, patient groups, dosages, and study duration. The following example provides all of this information clearly and concisely in a single sentence: “One hundred consecutive consenting male inpatients in a state of moderately severe, uncomplicated alcohol withdrawal at screening were randomized to receive either lorazepam (8 mg/day) or chlordiazepoxide (80 mg/day) with dosing down-titrated to zero in a fixed-dose schedule across 8 treatment days.” 2

4. Clearly describe the most important findings of your study

Just as the abstract may be the most important part of your paper, the results subsection is likely the most important part of your abstract. This is because the main reason that people are reading your abstract is to learn about your findings. Therefore, the results subsection should be the longest part of your abstract, and you should try to maximize the amount of detail you include here.

For example, statements such as “significant differences in body weight were observed between the animals in groups A and B” are not very informative. Instead, consider making more specific statements, such as “the average body weight loss of the animals in group A was greater than that of the animals in group B (20.4±0.3 g vs. 8.4±0.6 g; p<0.01)”. Note that the p-value effectively conveys that the difference was significant; thus, the word “significant” is no longer needed.

5. State the conclusion concisely and avoid overstatements

The last 1-2 sentences of your abstract should be devoted to the overall take-home message of your study: your conclusions. A good way to begin this section is with phrases such as “Our study revealed that…” or “Overall, we conclude that…”. Then, state your main finding as concisely as possible. If you have other interesting secondary findings, these can be mentioned as well. Finally, consider including a sentence that states the theoretical or practical implications of your work and/or describes how your work has advanced the field. This will help readers to more clearly understand the importance of your findings.

As mentioned earlier, many readers who are unable to access the full text of your manuscript will read only your abstract, and without access to your data, they will have to take your conclusions at face value. For this reason, it is very important not to overstate your conclusions in your abstract so as not to mislead your readers.

6. Things to avoid in an abstract

The abstract is meant to be a summary of your research; as such, it usually carries a strict word count limit. Combining all of the most important aspects of your work into a paragraph of 250 words or less can be a challenging task. However, knowing what to avoid when writing the abstract can make the job a little easier.

For example, the abstract should not contain:

Once you have completed the abstract, it is important to check that all of the information you have included here agrees with the information in the main body of your paper. After working on it for so long, it can sometimes be difficult to objectively evaluate whether your abstract is clear, especially because you are likely to be very familiar with the conventions within your discipline.

Consider giving your abstract to a colleague working in a separate discipline and ask him or her to read it. Ask your colleague whether the study is clear based solely on the abstract. This can help you to determine which areas of the abstract will require revisions, either to clarify your meaning or to better highlight your major findings.

Other things to consider

Identify key terms.

Key phrases are important to letting your abstract, as well as the full paper, be found. Incorporate key words found in your journal article so a search engine can discover them.

Consider the type of abstract

The type of abstract depends entirely on the publications. Be sure to learn the specific guidelines before writing an abstract. Below are descriptions of two different abstract types: descriptive and informative.

Descriptive abstract

A descriptive abstract acts more like an outline. Descriptive abstracts are usually short summaries of your main point and findings. Typically, it is one paragraph of around 100 words.

Informative abstract

Informative abstracts go into more detail than a descriptive abstract. A good informative abstract acts as a detailed summary of the main finding. It goes beyond a descriptive abstract to tell more of the whole story.

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Section-By-Section Writing Tips

Materials and Methods: 7 Writing Tips

Tips for writing a good Materials and Methods section, improving credibility and reproducibility of your manuscript. Read More »

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Organizing Your Social Sciences Research Paper

An abstract summarizes, usually in one paragraph of 300 words or less, the major aspects of the entire paper in a prescribed sequence that includes: 1) the overall purpose of the study and the research problem(s) you investigated; 2) the basic design of the study; 3) major findings or trends found as a result of your analysis; and, 4) a brief summary of your interpretations and conclusions.

Writing an Abstract. The Writing Center. Clarion University, 2009; Writing an Abstract for Your Research Paper. The Writing Center, University of Wisconsin, Madison.

Importance of a Good Abstract

Sometimes your professor will ask you to include an abstract, or general summary of your work, with your research paper. The abstract allows you to elaborate upon each major aspect of the paper and helps readers decide whether they want to read the rest of the paper. Therefore, enough key information [e.g., summary results, observations, trends, etc.] must be included to make the abstract useful to someone who may want to examine your work.

How do you know when you have enough information in your abstract? A simple rule-of-thumb is to imagine that you are another researcher doing a similar study. Then ask yourself: if your abstract was the only part of the paper you could access, would you be happy with the amount of information presented there? Does it tell the whole story about your study? If the answer is "no" then the abstract likely needs to be revised.

How to Write a Research Abstract. Office of Undergraduate Research. University of Kentucky; Staiger, David L. “What Today’s Students Need to Know about Writing Abstracts.” International Journal of Business Communication January 3 (1966): 29-33; Swales, John M. and Christine B. Feak. Abstracts and the Writing of Abstracts . Ann Arbor, MI: University of Michigan Press, 2009.

Structure and Writing Style

I. Types of Abstracts

To begin, you need to determine which type of abstract you should include with your paper. There are four general types.

Critical Abstract A critical abstract provides, in addition to describing main findings and information, a judgment or comment about the study’s validity, reliability, or completeness. The researcher evaluates the paper and often compares it with other works on the same subject. Critical abstracts are generally 400-500 words in length due to the additional interpretive commentary. These types of abstracts are used infrequently.

Descriptive Abstract A descriptive abstract indicates the type of information found in the work. It makes no judgments about the work, nor does it provide results or conclusions of the research. It does incorporate key words found in the text and may include the purpose, methods, and scope of the research. Essentially, the descriptive abstract only describes the work being summarized. Some researchers consider it an outline of the work, rather than a summary. Descriptive abstracts are usually very short, 100 words or less. Informative Abstract The majority of abstracts are informative. While they still do not critique or evaluate a work, they do more than describe it. A good informative abstract acts as a surrogate for the work itself. That is, the researcher presents and explains all the main arguments and the important results and evidence in the paper. An informative abstract includes the information that can be found in a descriptive abstract [purpose, methods, scope] but it also includes the results and conclusions of the research and the recommendations of the author. The length varies according to discipline, but an informative abstract is usually no more than 300 words in length.

Highlight Abstract A highlight abstract is specifically written to attract the reader’s attention to the study. No pretense is made of there being either a balanced or complete picture of the paper and, in fact, incomplete and leading remarks may be used to spark the reader’s interest. In that a highlight abstract cannot stand independent of its associated article, it is not a true abstract and, therefore, rarely used in academic writing.

II. Writing Style

Use the active voice when possible , but note that much of your abstract may require passive sentence constructions. Regardless, write your abstract using concise, but complete, sentences. Get to the point quickly and always use the past tense because you are reporting on a study that has been completed.

Abstracts should be formatted as a single paragraph in a block format and with no paragraph indentations. In most cases, the abstract page immediately follows the title page. Do not number the page. Rules set forth in writing manual vary but, in general, you should center the word "Abstract" at the top of the page with double spacing between the heading and the abstract. The final sentences of an abstract concisely summarize your study’s conclusions, implications, or applications to practice and, if appropriate, can be followed by a statement about the need for additional research revealed from the findings.

Composing Your Abstract

Although it is the first section of your paper, the abstract should be written last since it will summarize the contents of your entire paper. A good strategy to begin composing your abstract is to take whole sentences or key phrases from each section of the paper and put them in a sequence that summarizes the contents. Then revise or add connecting phrases or words to make the narrative flow clearly and smoothly. Note that statistical findings should be reported parenthetically [i.e., written in parentheses].

Before handing in your final paper, check to make sure that the information in the abstract completely agrees with what you have written in the paper. Think of the abstract as a sequential set of complete sentences describing the most crucial information using the fewest necessary words. The abstract SHOULD NOT contain:

Abstract. Writing Center. University of Kansas; Abstract. The Structure, Format, Content, and Style of a Journal-Style Scientific Paper. Department of Biology. Bates College; Abstracts. The Writing Center. University of North Carolina; Borko, Harold and Seymour Chatman. "Criteria for Acceptable Abstracts: A Survey of Abstracters' Instructions." American Documentation 14 (April 1963): 149-160; Abstracts. The Writer’s Handbook. Writing Center. University of Wisconsin, Madison; Hartley, James and Lucy Betts. "Common Weaknesses in Traditional Abstracts in hte Social Sciences." Journal of the American Society for Information Science and Technology 60 (October 2009): 2010-2018; Procter, Margaret. The Abstract. University College Writing Centre. University of Toronto; Riordan, Laura. “Mastering the Art of Abstracts.” The Journal of the American Osteopathic Association 115 (January 2015 ): 41-47; Writing Report Abstracts. The Writing Lab and The OWL. Purdue University; Writing Abstracts. Writing Tutorial Services, Center for Innovative Teaching and Learning. Indiana University; Koltay, Tibor. Abstracts and Abstracting: A Genre and Set of Skills for the Twenty-First Century . Oxford, UK: 2010; Writing an Abstract for Your Research Paper. The Writing Center, University of Wisconsin, Madison.

Writing Tip

Never Cite Just the Abstract!

Citing to just a journal article's abstract does not confirm for the reader that you have conducted a thorough or reliable review of the literature. If the full-text is not available, go to the USC Libraries main page and enter the title of the article [NOT the title of the journal]. If the Libraries have a subscription to the journal, the article should appear with a link to the full-text or to the journal publisher page where you can get the article. If the article does not appear, try searching Google Scholar using the link on the USC Libraries main page. If you still can't find the article after doing this, contact a librarian or you can request it from our free i nterlibrary loan and document delivery service .

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Writing an Abstract

What is an abstract.

An abstract is a 150- to 250-word paragraph that provides readers with a quick overview of your essay or report and its organization. It should express your thesis (or central idea) and your key points; it should also suggest any implications or applications of the research you discuss in the paper.

According to Carole Slade, an abstract is “a concise summary of the entire paper.”

The function of an abstract is to describe, not to evaluate or defend, the paper.

The abstract should begin with a brief but precise statement of the problem or issue, followed by a description of the research method and design, the major findings, and the conclusions reached.

The abstract should contain the most important key words referring to method and content: these facilitate access to the abstract by computer search and enable a reader to decide whether to read the entire dissertation.

Note: Your abstract should read like an overview of your paper, not a proposal for what you intended to study or accomplish. Avoid beginning your sentences with phrases like, “This essay will examine...” or “In this research paper I will attempt to prove...”

(The examples above are taken from Form and Style (10th ed.), by Carole Slade; The Scott, Foresman Handbook for Writers (5th ed.); and the Publication Manual of the American Psychological Association (5th ed.).)

Note: The following are specifications for an abstract in APA style, used in the social sciences, such as psychology or anthropology. If you are in another discipline, check with your professor about the format for the abstract.

Writing an Abstract for an IMRaD Paper

Many papers in the social sciences, natural sciences, and engineering sciences follow IMRaD structure: their main sections are entitled Introduction, Methods, Results, and Discussion. People use the abstract to decide whether to read the rest of the paper, so the abstract for such a paper is important.

Because the abstract provides the highlights of the paper, you should draft your abstract after you have written a full draft of the paper. Doing so, you can summarize what you’ve already written in the paper as you compose the abstract.

Typically, an abstract for an IMRaD paper or presentation is one or two paragraphs long (120 – 500 words). Abstracts usually spend

25% of their space on the purpose and importance of the research (Introduction)

25% of their space on what you did (Methods)

35% of their space on what you found (Results)

15% of their space on the implications of the research

Try to avoid these common problems in IMRaD abstracts:

1. The abstract provides a statement of what the paper will ask or explore rather than what it found:

X This report examines the causes of oversleeping. (What did it find out about these causes?) √ Individuals oversleep because they go to bed too late, forget to set their alarms, and keep their rooms dark.

2. The abstract provides general categories rather than specific details in the findings:

X The study draws conclusions about which variables are most important in choosing a movie theater. (What, specifically, are these variables?)

√ The study concludes that the most important variables in choosing a movie theater are comfortable seats and high-quality popcorn.

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How to write a good abstract for a scientific paper or conference presentation

Chittaranjan andrade.

Department of Psychopharmacology, National Institute of Mental Health and Neurosciences, Bangalore, Karnataka, India

Abstracts of scientific papers are sometimes poorly written, often lack important information, and occasionally convey a biased picture. This paper provides detailed suggestions, with examples, for writing the background, methods, results, and conclusions sections of a good abstract. The primary target of this paper is the young researcher; however, authors with all levels of experience may find useful ideas in the paper.

INTRODUCTION

This paper is the third in a series on manuscript writing skills, published in the Indian Journal of Psychiatry . Earlier articles offered suggestions on how to write a good case report,[ 1 ] and how to read, write, or review a paper on randomized controlled trials.[ 2 , 3 ] The present paper examines how authors may write a good abstract when preparing their manuscript for a scientific journal or conference presentation. Although the primary target of this paper is the young researcher, it is likely that authors with all levels of experience will find at least a few ideas that may be useful in their future efforts.

The abstract of a paper is the only part of the paper that is published in conference proceedings. The abstract is the only part of the paper that a potential referee sees when he is invited by an editor to review a manuscript. The abstract is the only part of the paper that readers see when they search through electronic databases such as PubMed. Finally, most readers will acknowledge, with a chuckle, that when they leaf through the hard copy of a journal, they look at only the titles of the contained papers. If a title interests them, they glance through the abstract of that paper. Only a dedicated reader will peruse the contents of the paper, and then, most often only the introduction and discussion sections. Only a reader with a very specific interest in the subject of the paper, and a need to understand it thoroughly, will read the entire paper.

Thus, for the vast majority of readers, the paper does not exist beyond its abstract. For the referees, and the few readers who wish to read beyond the abstract, the abstract sets the tone for the rest of the paper. It is therefore the duty of the author to ensure that the abstract is properly representative of the entire paper. For this, the abstract must have some general qualities. These are listed in Table 1 .

General qualities of a good abstract

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SECTIONS OF AN ABSTRACT

Although some journals still publish abstracts that are written as free-flowing paragraphs, most journals require abstracts to conform to a formal structure within a word count of, usually, 200–250 words. The usual sections defined in a structured abstract are the Background, Methods, Results, and Conclusions; other headings with similar meanings may be used (eg, Introduction in place of Background or Findings in place of Results). Some journals include additional sections, such as Objectives (between Background and Methods) and Limitations (at the end of the abstract). In the rest of this paper, issues related to the contents of each section will be examined in turn.

This section should be the shortest part of the abstract and should very briefly outline the following information:

In most cases, the background can be framed in just 2–3 sentences, with each sentence describing a different aspect of the information referred to above; sometimes, even a single sentence may suffice. The purpose of the background, as the word itself indicates, is to provide the reader with a background to the study, and hence to smoothly lead into a description of the methods employed in the investigation.

Some authors publish papers the abstracts of which contain a lengthy background section. There are some situations, perhaps, where this may be justified. In most cases, however, a longer background section means that less space remains for the presentation of the results. This is unfortunate because the reader is interested in the paper because of its findings, and not because of its background.

A wide variety of acceptably composed backgrounds is provided in Table 2 ; most of these have been adapted from actual papers.[ 4 – 9 ] Readers may wish to compare the content in Table 2 with the original abstracts to see how the adaptations possibly improve on the originals. Note that, in the interest of brevity, unnecessary content is avoided. For instance, in Example 1 there is no need to state “The antidepressant efficacy of desvenlafaxine (DV), a dual-acting antidepressant drug , has been established…” (the unnecessary content is italicized).

Examples of the background section of an abstract

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The methods section is usually the second-longest section in the abstract. It should contain enough information to enable the reader to understand what was done, and how. Table 3 lists important questions to which the methods section should provide brief answers.

Questions regarding which information should ideally be available in the methods section of an abstract

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Carelessly written methods sections lack information about important issues such as sample size, numbers of patients in different groups, doses of medications, and duration of the study. Readers have only to flip through the pages of a randomly selected journal to realize how common such carelessness is.

Table 4 presents examples of the contents of accept-ably written methods sections, modified from actual publications.[ 10 , 11 ] Readers are invited to take special note of the first sentence of each example in Table 4 ; each is packed with detail, illustrating how to convey the maximum quantity of information with maximum economy of word count.

Examples of the methods section of an abstract

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The results section is the most important part of the abstract and nothing should compromise its range and quality. This is because readers who peruse an abstract do so to learn about the findings of the study. The results section should therefore be the longest part of the abstract and should contain as much detail about the findings as the journal word count permits. For example, it is bad writing to state “Response rates differed significantly between diabetic and nondiabetic patients.” A better sentence is “The response rate was higher in nondiabetic than in diabetic patients (49% vs 30%, respectively; P <0.01).”

Important information that the results should present is indicated in Table 5 . Examples of acceptably written abstracts are presented in Table 6 ; one of these has been modified from an actual publication.[ 11 ] Note that the first example is rather narrative in style, whereas the second example is packed with data.

Information that the results section of the abstract should ideally present

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Examples of the results section of an abstract

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CONCLUSIONS

This section should contain the most important take-home message of the study, expressed in a few precisely worded sentences. Usually, the finding highlighted here relates to the primary outcome measure; however, other important or unexpected findings should also be mentioned. It is also customary, but not essential, for the authors to express an opinion about the theoretical or practical implications of the findings, or the importance of their findings for the field. Thus, the conclusions may contain three elements:

Despite its necessary brevity, this section has the most impact on the average reader because readers generally trust authors and take their assertions at face value. For this reason, the conclusions should also be scrupulously honest; and authors should not claim more than their data demonstrate. Hypothetical examples of the conclusions section of an abstract are presented in Table 7 .

Examples of the conclusions section of an abstract

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MISCELLANEOUS OBSERVATIONS

Citation of references anywhere within an abstract is almost invariably inappropriate. Other examples of unnecessary content in an abstract are listed in Table 8 .

Examples of unnecessary content in a abstract

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It goes without saying that whatever is present in the abstract must also be present in the text. Likewise, whatever errors should not be made in the text should not appear in the abstract (eg, mistaking association for causality).

As already mentioned, the abstract is the only part of the paper that the vast majority of readers see. Therefore, it is critically important for authors to ensure that their enthusiasm or bias does not deceive the reader; unjustified speculations could be even more harmful. Misleading readers could harm the cause of science and have an adverse impact on patient care.[ 12 ] A recent study,[ 13 ] for example, concluded that venlafaxine use during the second trimester of pregnancy may increase the risk of neonates born small for gestational age. However, nowhere in the abstract did the authors mention that these conclusions were based on just 5 cases and 12 controls out of the total sample of 126 cases and 806 controls. There were several other serious limitations that rendered the authors’ conclusions tentative, at best; yet, nowhere in the abstract were these other limitations expressed.

As a parting note: Most journals provide clear instructions to authors on the formatting and contents of different parts of the manuscript. These instructions often include details on what the sections of an abstract should contain. Authors should tailor their abstracts to the specific requirements of the journal to which they plan to submit their manuscript. It could also be an excellent idea to model the abstract of the paper, sentence for sentence, on the abstract of an important paper on a similar subject and with similar methodology, published in the same journal for which the manuscript is slated.

Source of Support: Nil

Conflict of Interest: None declared.

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How to Write an Abstract | Steps & Examples

Published on February 28, 2019 by Shona McCombes . Revised on November 11, 2022 by Eoghan Ryan.

An abstract is a short summary of a longer work (such as a thesis , dissertation or research paper ). The abstract concisely reports the aims and outcomes of your research, so that readers know exactly what your paper is about.

Although the structure may vary slightly depending on your discipline, your abstract should describe the purpose of your work, the methods you’ve used, and the conclusions you’ve drawn.

One common way to structure your abstract is to use the IMRaD structure. This stands for:

Introduction

Abstracts are usually around 100–300 words, but there’s often a strict word limit, so make sure to check the relevant requirements.

In a dissertation or thesis , include the abstract on a separate page, after the title page and acknowledgements but before the table of contents .

Abstract example, when to write an abstract, step 1: introduction, step 2: methods, step 3: results, step 4: discussion, tips for writing an abstract, frequently asked questions about abstracts.

Hover over the different parts of the abstract to see how it is constructed.

This paper examines the role of silent movies as a mode of shared experience in the US during the early twentieth century. At this time, high immigration rates resulted in a significant percentage of non-English-speaking citizens. These immigrants faced numerous economic and social obstacles, including exclusion from public entertainment and modes of discourse (newspapers, theater, radio).

Incorporating evidence from reviews, personal correspondence, and diaries, this study demonstrates that silent films were an affordable and inclusive source of entertainment. It argues for the accessible economic and representational nature of early cinema. These concerns are particularly evident in the low price of admission and in the democratic nature of the actors’ exaggerated gestures, which allowed the plots and action to be easily grasped by a diverse audience despite language barriers.

Keywords: silent movies, immigration, public discourse, entertainment, early cinema, language barriers.

You will almost always have to include an abstract when:

It’s easiest to write your abstract last, right before the proofreading stage, because it’s a summary of the work you’ve already done. Your abstract should:

What can proofreading do for your paper?

Scribbr editors not only correct grammar and spelling mistakes, but also strengthen your writing by making sure your paper is free of vague language, redundant words, and awkward phrasing.

See editing example

Start by clearly defining the purpose of your research. What practical or theoretical problem does the research respond to, or what research question did you aim to answer?

You can include some brief context on the social or academic relevance of your dissertation topic , but don’t go into detailed background information. If your abstract uses specialized terms that would be unfamiliar to the average academic reader or that have various different meanings, give a concise definition.

After identifying the problem, state the objective of your research. Use verbs like “investigate,” “test,” “analyze,” or “evaluate” to describe exactly what you set out to do.

This part of the abstract can be written in the present or past simple tense but should never refer to the future, as the research is already complete.

Next, indicate the research methods that you used to answer your question. This part should be a straightforward description of what you did in one or two sentences. It is usually written in the past simple tense, as it refers to completed actions.

Don’t evaluate validity or obstacles here — the goal is not to give an account of the methodology’s strengths and weaknesses, but to give the reader a quick insight into the overall approach and procedures you used.

Next, summarize the main research results . This part of the abstract can be in the present or past simple tense.

Depending on how long and complex your research is, you may not be able to include all results here. Try to highlight only the most important findings that will allow the reader to understand your conclusions.

Finally, you should discuss the main conclusions of your research : what is your answer to the problem or question? The reader should finish with a clear understanding of the central point that your research has proved or argued. Conclusions are usually written in the present simple tense.

If there are important limitations to your research (for example, related to your sample size or methods), you should mention them briefly in the abstract. This allows the reader to accurately assess the credibility and generalizability of your research.

If your aim was to solve a practical problem, your discussion might include recommendations for implementation. If relevant, you can briefly make suggestions for further research.

If your paper will be published, you might have to add a list of keywords at the end of the abstract. These keywords should reference the most important elements of the research to help potential readers find your paper during their own literature searches.

Be aware that some publication manuals, such as APA Style , have specific formatting requirements for these keywords.

It can be a real challenge to condense your whole work into just a couple of hundred words, but the abstract will be the first (and sometimes only) part that people read, so it’s important to get it right. These strategies can help you get started.

Read other abstracts

The best way to learn the conventions of writing an abstract in your discipline is to read other people’s. You probably already read lots of journal article abstracts while conducting your literature review —try using them as a framework for structure and style.

You can also find lots of dissertation abstract examples in thesis and dissertation databases .

Reverse outline

Not all abstracts will contain precisely the same elements. For longer works, you can write your abstract through a process of reverse outlining.

For each chapter or section, list keywords and draft one to two sentences that summarize the central point or argument. This will give you a framework of your abstract’s structure. Next, revise the sentences to make connections and show how the argument develops.

Write clearly and concisely

A good abstract is short but impactful, so make sure every word counts. Each sentence should clearly communicate one main point.

To keep your abstract or summary short and clear:

If you’re struggling to edit down to the required length, you can get help from expert editors with Scribbr’s professional proofreading services .

Check your formatting

If you are writing a thesis or dissertation or submitting to a journal, there are often specific formatting requirements for the abstract—make sure to check the guidelines and format your work correctly. For APA research papers you can follow the APA abstract format .

Checklist: Abstract

The word count is within the required length, or a maximum of one page.

The abstract appears after the title page and acknowledgements and before the table of contents .

I have clearly stated my research problem and objectives.

I have briefly described my methodology .

I have summarized the most important results .

I have stated my main conclusions .

I have mentioned any important limitations and recommendations.

The abstract can be understood by someone without prior knowledge of the topic.

You've written a great abstract! Use the other checklists to continue improving your thesis or dissertation.

An abstract is a concise summary of an academic text (such as a journal article or dissertation ). It serves two main purposes:

Abstracts are often indexed along with keywords on academic databases, so they make your work more easily findable. Since the abstract is the first thing any reader sees, it’s important that it clearly and accurately summarizes the contents of your paper.

An abstract for a thesis or dissertation is usually around 200–300 words. There’s often a strict word limit, so make sure to check your university’s requirements.

The abstract is the very last thing you write. You should only write it after your research is complete, so that you can accurately summarize the entirety of your thesis , dissertation or research paper .

Avoid citing sources in your abstract . There are two reasons for this:

There are some circumstances where you might need to mention other sources in an abstract: for example, if your research responds directly to another study or focuses on the work of a single theorist. In general, though, don’t include citations unless absolutely necessary.

The abstract appears on its own page in the thesis or dissertation , after the title page and acknowledgements but before the table of contents .

Cite this Scribbr article

If you want to cite this source, you can copy and paste the citation or click the “Cite this Scribbr article” button to automatically add the citation to our free Citation Generator.

McCombes, S. (2022, November 11). How to Write an Abstract | Steps & Examples. Scribbr. Retrieved March 3, 2023, from https://www.scribbr.com/dissertation/abstract/

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How To Write an Abstract For a Scientific Paper

Home » Writing the Manuscript » How To Write an Abstract For a Scientific Paper

What is an abstract for a research paper?

The abstract of a scientific paper is often the only part of it that readers will see, so you will need to use the space wisely. In this section of your manuscript, you will summarize your work and capture the reader’s attention in a story that tells why you did the work, how you did it, what you found, and what it means. Often, the space is limited because many journals require authors to write their abstract using 250 words or fewer.

How to start an abstract

The content of most abstracts for a research paper follows the same basic pattern. To begin, in just a couple of sentences, you give your readers the background they need to understand the rest of your work. You also will almost always include the specific aim of your study or its hypothesis or main question.

How to write an abstract for a research paper

Following this opening, in just a few sentences, your abstract next will describe the basic study design (e.g., retrospective, randomized, cross-sectional, etc.), number of patients or animals it involved, and tests or interventions you used. Sometimes, authors will include a brief mention of the statistical analyses they performed.

The last two parts of an abstract are the results and the conclusions. You should include the results that reflect the most important parts of your findings. You do not need to squeeze in every detail of these results, and it’s best to focus clearly on your most significant findings. Finally, you end your abstract with a conclusion. It’s usually not appropriate simply to say something like “more research is needed.” Instead, you should tell the reader the most important, specific takeaway from your work. If you have the word count left, you can offer a pointer to what the next steps should be, based on your findings. You should work to make your language clear and available even to a nonspecialist.

How to format your abstract

The format of your abstract will depend on which journal you choose. Some journals want an abstract in a single paragraph with no headings. Even in an abstract without headings, you should follow the same basic order described above, with a couple of sentences of background and introduction, followed by a brief methods and design, results, and conclusion.

Some journals follow a similar pattern when they require abstracts with headings. This type of abstract is called a “structured abstract,” and when you see that phrase, you will need to break up your abstract into sections with the required headings. These usually will be Introduction (or Background or Objectives), Methods (or Materials and Methods or Study Design), Results, and Conclusions. Some journals use less standard headings, such as Objective, Design, Setting, Patients, Interventions, Results, Conclusions, and Limitations.

Considerations for individual journals

Every academic journal has instructions for authors hoping to submit a paper. Journals call these instructions by different names, including “Instructions for authors,” “Author information,” “Journal guidelines,” and “Submission information.” In these instructions, you will find what the journal expects in terms of word count, structured or non-structured abstract text, and sometimes quite detailed information about phrasing and content, depending on the journal.

Below, we give you three examples of abstracts. The first two are not good abstracts, one because it is too vague and the other because it contains too much detail. Please note that these abstracts are not real and that the studies they described are fictional.

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Writing an Abstract for Your Research Paper

Definition and Purpose of Abstracts

An abstract is a short summary of your (published or unpublished) research paper, usually about a paragraph (c. 6-7 sentences, 150-250 words) long. A well-written abstract serves multiple purposes:

It’s also worth remembering that search engines and bibliographic databases use abstracts, as well as the title, to identify key terms for indexing your published paper. So what you include in your abstract and in your title are crucial for helping other researchers find your paper or article.

If you are writing an abstract for a course paper, your professor may give you specific guidelines for what to include and how to organize your abstract. Similarly, academic journals often have specific requirements for abstracts. So in addition to following the advice on this page, you should be sure to look for and follow any guidelines from the course or journal you’re writing for.

The Contents of an Abstract

Abstracts contain most of the following kinds of information in brief form. The body of your paper will, of course, develop and explain these ideas much more fully. As you will see in the samples below, the proportion of your abstract that you devote to each kind of information—and the sequence of that information—will vary, depending on the nature and genre of the paper that you are summarizing in your abstract. And in some cases, some of this information is implied, rather than stated explicitly. The Publication Manual of the American Psychological Association , which is widely used in the social sciences, gives specific guidelines for what to include in the abstract for different kinds of papers—for empirical studies, literature reviews or meta-analyses, theoretical papers, methodological papers, and case studies.

Here are the typical kinds of information found in most abstracts:

Your abstract should be intelligible on its own, without a reader’s having to read your entire paper. And in an abstract, you usually do not cite references—most of your abstract will describe what you have studied in your research and what you have found and what you argue in your paper. In the body of your paper, you will cite the specific literature that informs your research.

When to Write Your Abstract

Although you might be tempted to write your abstract first because it will appear as the very first part of your paper, it’s a good idea to wait to write your abstract until after you’ve drafted your full paper, so that you know what you’re summarizing.

What follows are some sample abstracts in published papers or articles, all written by faculty at UW-Madison who come from a variety of disciplines. We have annotated these samples to help you see the work that these authors are doing within their abstracts.

Choosing Verb Tenses within Your Abstract

The social science sample (Sample 1) below uses the present tense to describe general facts and interpretations that have been and are currently true, including the prevailing explanation for the social phenomenon under study. That abstract also uses the present tense to describe the methods, the findings, the arguments, and the implications of the findings from their new research study. The authors use the past tense to describe previous research.

The humanities sample (Sample 2) below uses the past tense to describe completed events in the past (the texts created in the pulp fiction industry in the 1970s and 80s) and uses the present tense to describe what is happening in those texts, to explain the significance or meaning of those texts, and to describe the arguments presented in the article.

The science samples (Samples 3 and 4) below use the past tense to describe what previous research studies have done and the research the authors have conducted, the methods they have followed, and what they have found. In their rationale or justification for their research (what remains to be done), they use the present tense. They also use the present tense to introduce their study (in Sample 3, “Here we report . . .”) and to explain the significance of their study (In Sample 3, This reprogramming . . . “provides a scalable cell source for. . .”).

Sample Abstract 1

From the social sciences.

Reporting new findings about the reasons for increasing economic homogamy among spouses

Gonalons-Pons, Pilar, and Christine R. Schwartz. “Trends in Economic Homogamy: Changes in Assortative Mating or the Division of Labor in Marriage?” Demography , vol. 54, no. 3, 2017, pp. 985-1005.

“The growing economic resemblance of spouses has contributed to rising inequality by increasing the number of couples in which there are two high- or two low-earning partners. [Annotation for the previous sentence: The first sentence introduces the topic under study (the “economic resemblance of spouses”). This sentence also implies the question underlying this research study: what are the various causes—and the interrelationships among them—for this trend?] The dominant explanation for this trend is increased assortative mating. Previous research has primarily relied on cross-sectional data and thus has been unable to disentangle changes in assortative mating from changes in the division of spouses’ paid labor—a potentially key mechanism given the dramatic rise in wives’ labor supply. [Annotation for the previous two sentences: These next two sentences explain what previous research has demonstrated. By pointing out the limitations in the methods that were used in previous studies, they also provide a rationale for new research.] We use data from the Panel Study of Income Dynamics (PSID) to decompose the increase in the correlation between spouses’ earnings and its contribution to inequality between 1970 and 2013 into parts due to (a) changes in assortative mating, and (b) changes in the division of paid labor. [Annotation for the previous sentence: The data, research and analytical methods used in this new study.] Contrary to what has often been assumed, the rise of economic homogamy and its contribution to inequality is largely attributable to changes in the division of paid labor rather than changes in sorting on earnings or earnings potential. Our findings indicate that the rise of economic homogamy cannot be explained by hypotheses centered on meeting and matching opportunities, and they show where in this process inequality is generated and where it is not.” (p. 985) [Annotation for the previous two sentences: The major findings from and implications and significance of this study.]

Sample Abstract 2

From the humanities.

Analyzing underground pulp fiction publications in Tanzania, this article makes an argument about the cultural significance of those publications

Emily Callaci. “Street Textuality: Socialism, Masculinity, and Urban Belonging in Tanzania’s Pulp Fiction Publishing Industry, 1975-1985.” Comparative Studies in Society and History , vol. 59, no. 1, 2017, pp. 183-210.

“From the mid-1970s through the mid-1980s, a network of young urban migrant men created an underground pulp fiction publishing industry in the city of Dar es Salaam. [Annotation for the previous sentence: The first sentence introduces the context for this research and announces the topic under study.] As texts that were produced in the underground economy of a city whose trajectory was increasingly charted outside of formalized planning and investment, these novellas reveal more than their narrative content alone. These texts were active components in the urban social worlds of the young men who produced them. They reveal a mode of urbanism otherwise obscured by narratives of decolonization, in which urban belonging was constituted less by national citizenship than by the construction of social networks, economic connections, and the crafting of reputations. This article argues that pulp fiction novellas of socialist era Dar es Salaam are artifacts of emergent forms of male sociability and mobility. In printing fictional stories about urban life on pilfered paper and ink, and distributing their texts through informal channels, these writers not only described urban communities, reputations, and networks, but also actually created them.” (p. 210) [Annotation for the previous sentences: The remaining sentences in this abstract interweave other essential information for an abstract for this article. The implied research questions: What do these texts mean? What is their historical and cultural significance, produced at this time, in this location, by these authors? The argument and the significance of this analysis in microcosm: these texts “reveal a mode or urbanism otherwise obscured . . .”; and “This article argues that pulp fiction novellas. . . .” This section also implies what previous historical research has obscured. And through the details in its argumentative claims, this section of the abstract implies the kinds of methods the author has used to interpret the novellas and the concepts under study (e.g., male sociability and mobility, urban communities, reputations, network. . . ).]

Sample Abstract/Summary 3

From the sciences.

Reporting a new method for reprogramming adult mouse fibroblasts into induced cardiac progenitor cells

Lalit, Pratik A., Max R. Salick, Daryl O. Nelson, Jayne M. Squirrell, Christina M. Shafer, Neel G. Patel, Imaan Saeed, Eric G. Schmuck, Yogananda S. Markandeya, Rachel Wong, Martin R. Lea, Kevin W. Eliceiri, Timothy A. Hacker, Wendy C. Crone, Michael Kyba, Daniel J. Garry, Ron Stewart, James A. Thomson, Karen M. Downs, Gary E. Lyons, and Timothy J. Kamp. “Lineage Reprogramming of Fibroblasts into Proliferative Induced Cardiac Progenitor Cells by Defined Factors.” Cell Stem Cell , vol. 18, 2016, pp. 354-367.

“Several studies have reported reprogramming of fibroblasts into induced cardiomyocytes; however, reprogramming into proliferative induced cardiac progenitor cells (iCPCs) remains to be accomplished. [Annotation for the previous sentence: The first sentence announces the topic under study, summarizes what’s already known or been accomplished in previous research, and signals the rationale and goals are for the new research and the problem that the new research solves: How can researchers reprogram fibroblasts into iCPCs?] Here we report that a combination of 11 or 5 cardiac factors along with canonical Wnt and JAK/STAT signaling reprogrammed adult mouse cardiac, lung, and tail tip fibroblasts into iCPCs. The iCPCs were cardiac mesoderm-restricted progenitors that could be expanded extensively while maintaining multipo-tency to differentiate into cardiomyocytes, smooth muscle cells, and endothelial cells in vitro. Moreover, iCPCs injected into the cardiac crescent of mouse embryos differentiated into cardiomyocytes. iCPCs transplanted into the post-myocardial infarction mouse heart improved survival and differentiated into cardiomyocytes, smooth muscle cells, and endothelial cells. [Annotation for the previous four sentences: The methods the researchers developed to achieve their goal and a description of the results.] Lineage reprogramming of adult somatic cells into iCPCs provides a scalable cell source for drug discovery, disease modeling, and cardiac regenerative therapy.” (p. 354) [Annotation for the previous sentence: The significance or implications—for drug discovery, disease modeling, and therapy—of this reprogramming of adult somatic cells into iCPCs.]

Sample Abstract 4, a Structured Abstract

Reporting results about the effectiveness of antibiotic therapy in managing acute bacterial sinusitis, from a rigorously controlled study

Note: This journal requires authors to organize their abstract into four specific sections, with strict word limits. Because the headings for this structured abstract are self-explanatory, we have chosen not to add annotations to this sample abstract.

Wald, Ellen R., David Nash, and Jens Eickhoff. “Effectiveness of Amoxicillin/Clavulanate Potassium in the Treatment of Acute Bacterial Sinusitis in Children.” Pediatrics , vol. 124, no. 1, 2009, pp. 9-15.

“OBJECTIVE: The role of antibiotic therapy in managing acute bacterial sinusitis (ABS) in children is controversial. The purpose of this study was to determine the effectiveness of high-dose amoxicillin/potassium clavulanate in the treatment of children diagnosed with ABS.

METHODS : This was a randomized, double-blind, placebo-controlled study. Children 1 to 10 years of age with a clinical presentation compatible with ABS were eligible for participation. Patients were stratified according to age (<6 or ≥6 years) and clinical severity and randomly assigned to receive either amoxicillin (90 mg/kg) with potassium clavulanate (6.4 mg/kg) or placebo. A symptom survey was performed on days 0, 1, 2, 3, 5, 7, 10, 20, and 30. Patients were examined on day 14. Children’s conditions were rated as cured, improved, or failed according to scoring rules.

RESULTS: Two thousand one hundred thirty-five children with respiratory complaints were screened for enrollment; 139 (6.5%) had ABS. Fifty-eight patients were enrolled, and 56 were randomly assigned. The mean age was 6630 months. Fifty (89%) patients presented with persistent symptoms, and 6 (11%) presented with nonpersistent symptoms. In 24 (43%) children, the illness was classified as mild, whereas in the remaining 32 (57%) children it was severe. Of the 28 children who received the antibiotic, 14 (50%) were cured, 4 (14%) were improved, 4(14%) experienced treatment failure, and 6 (21%) withdrew. Of the 28children who received placebo, 4 (14%) were cured, 5 (18%) improved, and 19 (68%) experienced treatment failure. Children receiving the antibiotic were more likely to be cured (50% vs 14%) and less likely to have treatment failure (14% vs 68%) than children receiving the placebo.

CONCLUSIONS : ABS is a common complication of viral upper respiratory infections. Amoxicillin/potassium clavulanate results in significantly more cures and fewer failures than placebo, according to parental report of time to resolution.” (9)

Some Excellent Advice about Writing Abstracts for Basic Science Research Papers, by Professor Adriano Aguzzi from the Institute of Neuropathology at the University of Zurich:

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The difference between abstract and conclusion

5 minute read

Table of Contents

Ready, set… wait! Having new research to share with the world is something truly amazing: standing just a few pages away of stirring science in a way that could actually generate effective changes in society as we know it. But the time comes when we, as authors, need to put excitement aside and stop to think the expectations of how to present our ideas. Sharing knowledge in academia is just like anything else in life. It takes discipline to follow certain rules, criteria, and guidelines to be clear and efficient about our message, in the end.

The large majority of scientific papers are organized under sections, with a specific order, that help readers recognize and follow the author’s train of thought. The most important ones, following the well-known IMRaD structure, include:

In this article, however, we will focus on a section outside the paper’s main body, but essential to most scientific output formats: the abstract. A good abstract constitutes a fundamental tool to get attention for our work among scientists in the same field of study. Moreover, let’s also learn how to differentiate it from the conclusion, since separating these two sections, in terms of message, might turn out to be more challenging than one could expect.

What is the abstract of a paper?

Abstracts are independent short texts – generally, not exceeding 10% of the paper’s length and/or 250 words – where the main purpose is to capture the essence of a paper to let people decide quickly if it’s of their interest or not. At the same time, a good abstract should also generate curiosity and excitement among an audience by making the proper impression upon the target reader. In other words, abstracts must be more than plain descriptions of their related paper’s contents; above all, they should be powerful statements enhancing the scientific novelty of the research and its importance for science in general. In most abstracts, main findings and key questions for further discussion are included in order to stress, once more, the relevance of the presented work.

In general, it’s important to specify the topic, aim and scope of your research in the abstract. The vast majority of journals select papers for publication just by reading their abstracts. Hence, if you are in the process of submitting your paper to a journal, it is vital that you check the journal’s guidelines before you embrace the task of writing one. They may vary a lot, from publication to publication.

Other than selection, another main purpose of an abstract is to allow the indexation of larger works in academic and scientific databases. Careful word selection, and a handful of clever keywords, will make an effective difference whether your paper jumps easily before the eyes of those who want to read it, or in the contrary, remains forever hidden among many, many others.

Check these tips for choosing right keywords for your manuscript .

Knowing the rules, using the right language and producing a flawless text are all key to rendering a perfect abstract. On the one hand, you need very good summarizing skills to provide a clear and general overview on your main topic and arguments. On the other hand, an abstract should also contain powerful and meaningful words to create curiosity and excitement about your paper. Don’t forget to revise your abstract constantly – in Elsevier, our team of professional text editors and revisors can help you achieve the perfect balance that could be that extra nudge to skyrocket your science career.

What is the conclusion in a research paper?

Unlike the abstract, the conclusion is the last part of the main body of a paper or thesis. It is where a researcher actually answers the big question that impelled him or her to undertake the research project in the first place. However, despite of the different roles that an abstract and conclusion play in a scientific paper, many aspects in drafting a conclusion can actually relate to writing an abstract:

A conclusion must always start by addressing the main topic of the thesis, in order to remind the reader “where it all began.” The next step is to briefly bring forward results previously discussed at some point in the paper, however not too extensively. The aim is to put everything on the table in order to finish the line of thought presented throughout the document. Furthermore, in a conclusion section, it is not only important to bring forward results and findings but, above all, stress their significance. Add impactful language and construct clear, but solid statements. This tone should be strong enough to inspire other researchers to follow your work in the future, and to enhance your chances of growing into a respected scientist among your peers.

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