The abstract is the most-read part of any academic paper — and the part most students write last, in fifteen minutes, without giving it the attention it deserves. A well-written abstract is the difference between readers clicking to read your paper and moving on to the next result in the database.
What an Abstract Does
An abstract is a self-contained summary of your paper that allows a reader to decide whether to read the full text. It should answer four questions:
- What is the research problem or question?
- How did you investigate it (methodology)?
- What did you find (key results)?
- What does it mean (conclusion or implication)?
Structured vs. Unstructured Abstracts
Structured Abstract
Uses labelled sections (Background, Objectives, Methods, Results, Conclusions). Common in medical, nursing, and health sciences journals.
- Background: one or two sentences
- Objectives: what you aimed to do
- Methods: design and sample
- Results: key findings with data
- Conclusions: implications
Unstructured Abstract
A single paragraph (or two) with no labelled sections. Common in humanities, social sciences, and many general journals.
Covers the same content but flows as continuous prose — context and problem, methodology, findings, implications.
Annotated Example
Social media use among adolescents has increased substantially over the past decade, with daily screen time exceeding four hours in recent surveys. Context However, the relationship between platform-specific use patterns and mental health outcomes remains poorly understood. Gap This study examined whether daily Instagram use predicted depressive symptoms in a sample of 412 university students in Kenya, using a cross-sectional survey design and the PHQ-9 depression scale. Method Results indicated a significant positive correlation between Instagram use exceeding 90 minutes per day and elevated PHQ-9 scores (r = 0.43, p < .001), an effect that persisted after controlling for demographic variables. Results These findings suggest that platform-specific screen time thresholds may be a more meaningful intervention target than total social media use, with implications for mental health policy in university settings. Conclusion
Word Count and Length
- Undergraduate dissertation: 150–250 words is standard
- Master's dissertation: 250–300 words
- Journal article: usually 150–250 words (check the journal's author guidelines)
- Conference paper: often 250–300 words; some conferences require extended abstracts of up to 500 words
When in doubt, aim for 200–250 words. If your abstract is consistently over 300 words, you're probably including too much detail that belongs in the paper itself.
Keywords
Most academic papers require 4–6 keywords immediately after the abstract. These are the terms that help database indexing algorithms (like those in PubMed, Scopus, or ERIC) categorise your paper so the right researchers find it.
- Choose terms that appear in your abstract and title
- Include both specific terms (e.g., "PHQ-9") and broader terms (e.g., "depression screening")
- Avoid overly generic terms like "study" or "research" — these don't help searchers find your paper
- Check if your discipline has a controlled vocabulary (Medical Subject Headings in medicine; ERIC Thesaurus in education) and use those terms where appropriate
Common Abstract Mistakes
- No findings mentioned — the most common error. An abstract without results tells the reader nothing useful.
- Too vague — "Results showed a significant relationship between X and Y." Which direction? How significant? What was the effect size?
- Introduction-style writing — describing what you'll do rather than what you did and found.
- Too long — exceeding the word limit. Abstracts must fit within strict limits; every word counts.
- Written before the paper is finished — the abstract should be the last thing you write, once you know exactly what your paper concluded.
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