Quick answer: Write your abstract last, when the findings exist, and build it from five moves in this order: the problem and why it matters (1–2 sentences), your aim or research question (1 sentence), your method (1–2 sentences), your key findings (3–4 sentences — the biggest share), and your conclusion or contribution (1–2 sentences). Around 250–350 words, one paragraph in most UK universities’ formats, past tense for what you did and found, present tense for what the dissertation argues. No citations, no abbreviations you have not explained, no claims your chapters do not deliver.
The abstract is the most-read part of your dissertation and the least-taught. Your examiner reads it first, forms an expectation of the whole project from it, and — more than most students realise — checks at the end whether the dissertation delivered what the abstract promised. Library users deciding whether your work is relevant read only the abstract. Future students citing you found you through it. Three hundred words doing that much work deserve more than the exhausted half-hour most students give them on submission eve, which is why this guide exists. It completes our dissertation chapter series — structure, proposal, literature review, methodology and conclusion — with the chapter that bookends them all.
Why the abstract must be written last
An abstract is a summary of findings, and you cannot summarise findings you have not reached yet. Abstracts drafted early always fail the same way: they describe intentions (“this study will explore…”) instead of results, and they promise emphases the finished project quietly dropped. Markers notice the mismatch between an optimistic abstract and a different dissertation — it reads as carelessness about the single most visible page. Write it in the final week, from the finished chapters, ideally starting from your conclusion: the conclusion states what you found and what it means, and the abstract is that material compressed by a factor of ten.
The five moves, sentence by sentence
1. The problem and why it matters
Open with the issue your project addresses and its significance, in plain terms a non-specialist in your wider field could follow. Avoid throat-clearing (“In recent years, much research has been conducted into…”). Name the problem directly: “NHS community nurses report rising caseloads, yet little is known about how digital triage tools affect their workload decisions.” Two sentences maximum.
2. The aim or research question
One sentence, exact: “This dissertation examines how…” / “This study investigates whether…”. Lift the wording from your introduction’s aim statement so the two agree precisely — markers compare them.
3. The method
What you did, compressed: design, data, sample, analysis. “A qualitative study interviewed 14 community nurses across two trusts; transcripts were analysed thematically.” If you used a named approach — case study, systematic review, experiment, survey with regression — name it; method keywords are how relevant readers find you.
4. The key findings — the biggest share
This is where weak abstracts starve. Give your actual results, with specifics: not “several themes emerged” but what the themes were; not “a significant relationship was found” but its direction and, for quantitative work, the headline figures. Three or four findings, in the order your research questions asked them. If a finding surprised you, it probably belongs here — surprises are what abstracts are remembered for.
5. The conclusion and contribution
Close with what your findings mean: the recommendation, the implication for practice or theory, the gap now filled. One or two sentences, present tense: “The study shows that triage tools redistribute rather than reduce workload, suggesting trusts should…” — a claim your discussion chapter must genuinely support.
Tense, length and formatting rules
- Length: follow your handbook first. In its absence, 250–350 words suits most undergraduate and Masters dissertations; PhD abstracts can run longer where regulations allow.
- Tense: past tense for the study (“data were collected”, “analysis revealed”), present tense for the dissertation itself and its claims (“this dissertation argues”, “the findings suggest”).
- Paragraphs: one single paragraph is the common UK format; some universities ask for structured abstracts (Background / Methods / Results / Conclusion headings), common in health subjects — the five moves above map onto those headings directly.
- No citations, no references, no unexplained abbreviations. The abstract must stand alone. Define any technical term a general academic reader would not know, or replace it with plain words.
- Keywords: if your university asks for them below the abstract, choose terms a searcher would use — your population, setting, method and core concept — not words already in your title.
A worked skeleton
Adapt this frame to your project; every bracket is a decision, not a formula:
“[Problem, one sentence.] [Why it matters, one sentence.] This dissertation [aim verb] [research question/object]. Using [method/design], [data/sample] were [collected/analysed] via [analysis approach]. The findings show that [finding 1], [finding 2], and [finding 3 — the most significant]. [Optional: contrasting or unexpected finding.] The study concludes that [main claim], contributing [contribution to knowledge/practice] and suggesting [key recommendation/implication].”
A skeleton is a starting shape, not a substitute for judgement — if your methodology is itself the contribution (an methods-development project, say), it deserves more of the abstract’s space than the standard split allows.
The mistakes that cost marks
- Writing the abstract first and never revisiting it — the mismatch problem above.
- A findings-free abstract — intentions and methods described, results absent. This is the commonest and most damaging error; an abstract without findings is a proposal in disguise.
- Introducing claims the dissertation does not make — enthusiasm in the abstract that the discussion chapter quietly avoids. Examiners check.
- Copying the introduction’s opening — the introduction sets up a question; the abstract must also answer it.
- Last-minute drafting — three hundred words written at 3 a.m. read like it. Draft in the final week, then read it aloud once the next day; the ear catches what tired eyes miss.
Where the abstract fits your final week
Sequence the end properly: finish the conclusion first, then the abstract, then re-read the introduction to confirm the aim’s wording matches both. If your supervisor offers to see one late section, send the abstract — it is the fastest section for them to sanity-check against the whole project. And if the end of your dissertation still feels unfinished rather than nearly done, our dissertation chapter help service exists for exactly this stage: individual chapters, feedback fixes and final-section support at published prices from £20 per 1,000 words.
Writing the words that sit in front of your acknowledgements is the next final-week task — our guide to dissertation acknowledgements covers who to thank, in what order, with examples. And when the whole project is submitted, the students we support through our dissertation help service most often say the same thing: they wish they had sequenced the final chapters earlier. Now you have.
Frequently asked abstract questions
Should I include citations or direct quotations in the abstract?
Almost never. The abstract is a self-contained summary of your own study, so references to other authors and quoted lines waste words and distract from your aim, method and findings. The only rare exception is a dissertation that is itself about one named theory or author, where naming that figure in the opening sentence may be necessary for clarity.
Which tense should I use for the method and for the findings?
Use the past tense for both, because by the time you write the abstract the research is complete: you surveyed participants, you found a pattern. The present tense is reserved for the framing statements around them, such as what the dissertation examines or what its conclusion contributes to the wider debate.
Can I mention a negative or unexpected result in the abstract?
You should, if it is one of your main findings. An abstract that only reports the results you hoped for misrepresents the study and sets up a mismatch with your results chapter that markers notice quickly. State the unexpected result plainly in one sentence; its explanation belongs in the discussion, not here.
Do keywords belong directly underneath the abstract?
That depends on your university template, so check the front-matter order in your handbook. Where keywords are required, choose four to six single words or short phrases that a reader would actually search for, reflecting your topic, setting and method. They are not a sixth move in the abstract itself, so they do not count towards its word limit in most departments.