Five sentences: why it matters, what question you asked, what you did, what you found with the number in it, and what it means. Write it last, after the paper is finished. The commonest failures are a results sentence with no number, a first sentence about the field rather than the gap, and going over the venue's word limit.
The abstract is the only part of your paper most people will read, and it is the part students write first — which is why so many of them describe a paper that was never written.
Write it last
An abstract written before the paper describes what you intended to find.
Projects change. The confounder you could not control for, the dataset variable that turned out to be unusable, the result that came out the other way — all of that shifts what the paper says, and an abstract drafted in week two will not reflect it.
Written last, it takes twenty minutes, because you are summarising something that exists.
The five sentences
| Sentence | What it does | Example |
|---|---|---|
| 1. Context | Why this matters, in one line | "Adolescent sleep duration has declined across successive cohorts, and screen use is the most frequently proposed explanation." |
| 2. Question | What you actually asked | "This study examines whether self-reported daily screen time predicts self-reported sleep duration among US 12th graders." |
| 3. Method | What you did, specifically | "Using the 2023 Monitoring the Future survey (n = 4,120), associations were tested with linear regression controlling for sex and region." |
| 4. Finding | The result, with a number | "Each additional hour of reported screen time was associated with approximately 11 fewer minutes of reported sleep." |
| 5. Meaning | What it means, and its limit | "The association is modest and correlational; longitudinal data would be needed to establish direction." |
That is roughly 110 words. Under most limits, with room to expand any sentence that needs it.
Sentence 4 is the one that separates a real abstract from a contents listing, and it is the one students most often get wrong.
The four things to cut
"Results are discussed." This is the commonest failure in student abstracts. It tells a reader nothing and signals that you either did not find anything or are not confident saying what you found. State the result.
A first sentence about the whole field. "Climate change is one of the most pressing issues facing humanity" is true, carries no information, and burns 11 of your 200 words. Start at the gap, not at the beginning of the discipline.
Citations. An abstract should stand alone, readable without the paper or its reference list. If a citation feels essential, the sentence belongs in the introduction.
Hedging stacked on hedging. "It may possibly suggest that there could be a potential relationship" says less than "the data suggest a relationship." One hedge is honest; four is evasion, and reviewers read it as a lack of confidence in your own result.
What each venue actually requires
Check before you write, because limits vary and over-running is an avoidable desk rejection.
| Venue | Abstract requirement |
|---|---|
| Oxford Journal of Student Scholarship | 150–300 words, required |
| NHSJS | Required in both research articles and literature reviews |
| Whitman Journal of Psychology | Suggested section, not required; APA 7 style |
| STEM Fellowship Journal | Required; blind review, so no identifying details |
| SQA Advanced Higher project | An abstract "that summarises the different interpretations and debate(s)" |
Two things to notice.
The SQA's version is different in kind. For an Advanced Higher project-dissertation, the abstract summarises the debate rather than reporting a finding — because the task is a historiographical argument rather than an empirical study. Writing an empirical-style abstract there loses marks.
Blind review changes what you can write. STEM Fellowship Journal requires identifying information removed from the manuscript. "At our school in Manchester, we surveyed…" identifies you. Write "at a secondary school in northern England" instead.
Abstracts for a literature review
Different content, same five-sentence skeleton.
Your "finding" is a claim about the state of the literature, not a number. So sentence 4 becomes something like: "Across 23 studies, effects were consistently positive in cross-sectional designs and absent in the four longitudinal ones."
That is still a finding. What does not work is "the literature is reviewed and gaps are identified," which is sentence 4 refusing to do its job.
Venues taking literature reviews — NHSJS, the Columbia Junior Science Journal, OJSS, IJHSR and STEM Fellowship Journal — all expect an abstract that states what the synthesis concluded. The DOAJ's guidance is worth reading before you choose where to send it.
Abstracts for school qualifications
The same discipline, assessed differently.
An EPQ or Extended Essay abstract is read by someone marking against criteria rather than deciding whether to read on. But the test is the same: can a reader who has not seen your essay say what you asked, what you did and what you concluded?
For an IB Internal Assessment, the equivalent discipline is in the research question itself — naming variables, population and method — which is the same work done one layer up.
A worked cut
A real-shaped first draft, at 94 words, and what is wrong with it:
"Social media is an increasingly important part of young people's lives and has been the subject of much debate. This study investigates the relationship between social media use and wellbeing in adolescents. Data was collected and analysed using statistical methods. The results are presented and discussed, and implications for policy and future research are considered. This is an important area that deserves further study."
Four failures: sentence 1 is about the field, the method sentence names no data and no test, the finding sentence contains no finding, and the last sentence says nothing at all.
The rewrite, at 92 words:
"Adolescent sleep duration has declined across successive cohorts, with screen use the most frequently proposed explanation. This study tests whether self-reported daily screen time predicts self-reported sleep duration among US 12th graders in the 2023 Monitoring the Future survey (n = 4,120), using linear regression controlling for sex and region. Each additional hour of reported screen time was associated with approximately 11 fewer minutes of reported sleep. The association is modest and correlational; longitudinal data would be needed to establish direction."
Same length. The second one tells you what happened.
The test before you submit
Give the abstract to someone who has not read your paper and ask them three questions: what did they ask, what did they do, what did they find?
If your reader can answer all three, the abstract works. If they cannot answer the third, you have written a table of contents — which is the single most common thing wrong with a student abstract, and a twenty-minute fix.
Our complete guide to publishing covers the rest of the submission, and what happens after you submit covers the months that follow.
Where we fit
The Oxford Centre for Advanced Research pairs students with PhD candidates and early-career researchers at Oxford, Cambridge, other leading UK universities and Ivy League institutions. The Oxford Publication Fellowship is £3,400, roughly $4,400, and is built around getting a project to submission standard.
Nothing on this page needs us. The five-sentence structure works whether anyone is paid, and the reader test is free — a teacher, a parent, a friend in a different subject will all tell you whether your third sentence lands.
Twenty minutes tonight
Write five sentences. One context, one question, one method, one finding with a number in it, one meaning with its limit.
Then count the words and check them against what your venue actually asks for.
Frequently asked questions
How long should an abstract be?
Whatever the venue says. The Oxford Journal of Student Scholarship requires 150–300 words. The SQA's Advanced Higher project expects one summarising the interpretations and debate. If no limit is given, 200 words is a safe default — long enough for five real sentences, short enough that every word has to work.
When should I write it?
Last, after the paper is finished. An abstract written first describes the paper you intended to write, and the two are rarely the same. Writing it last takes twenty minutes; writing it first means rewriting it anyway.
What has to be in it?
Five things: why the question matters, what you asked, what you did, what you found, and what it means. The one students most often omit is the actual finding — abstracts routinely say 'results are discussed' instead of stating the result, which tells a reader nothing.
Should the abstract include numbers?
Yes, at least one. The finding sentence should contain the result itself, not a promise of it. 'Screen time predicted shorter sleep duration, with each additional hour associated with 11 fewer minutes' is an abstract. 'The relationship between screen time and sleep is examined' is a table of contents.
Do I cite sources in an abstract?
Almost never. An abstract should stand alone and be readable without the paper or its reference list. If a citation seems essential, the sentence usually belongs in the introduction instead.
What is the difference between an abstract and an introduction?
An abstract summarises the whole paper including the findings and conclusion. An introduction sets up the problem and stops before the answer. The abstract is the only part many people will read, which is why the result belongs in it.