Your abstract is the most-read part of your paper. Chief editors read it to decide whether to send your draft out for peer review. Readers use it to decide whether to download your full text. This guide gives you a five-part formula, an abstract for research paper example in both unstructured and structured styles, and clear rules for word count and tense.
What an Abstract Must Do
In 150 to 250 words, a strong abstract answers five questions in order:
| Part. | Question it answers. | Share of words. |
|---|---|---|
| 1. Background. | Why does this topic matter, and what is missing? | 10% to 15%. |
| 2. Objective. | What exact question did you test? | 10%. |
| 3. Methods. | How did you run the study (design, sample, tools)? | 20% to 25%. |
| 4. Results. | What did you find, with key numbers and stats? | 35% to 40%. |
| 5. Conclusion. | What does this finding change for your field? | 10% to 15%. |
Give your Results section the most space. A classic mistake is spending half the abstract on broad background and leaving only one vague line for your data.
Abstract for Research Paper Example: Unstructured
Social sciences, engineering, and many science journals use a single block paragraph. Here is a clear example:
College students rely on smartphones while studying, yet we know little about how phone alerts affect reading focus. This study tested whether muting phone alerts improves focus and reading scores during solo study. We ran a randomized trial with 140 students at two universities. Each student read a 30-minute science text with phone alerts either turned on or muted. We measured focus on a six-item scale and reading comprehension with a 20-question test. Students in the muted group reported higher focus (M = 4.1 vs. 3.4 on a 5-point scale) and scored higher on the reading test (M = 15.2 vs. 13.6, p = .004). Gains were largest for students who check their phones over 50 times a day. Muting phone alerts is a simple, free habit that boosts study results. Future studies should track whether these gains hold across a full term.
Keywords: smartphone alerts, attention, reading scores, study habits, randomized trial.
Abstract Example: Structured
Medical, nursing, and clinical journals require bold subheadings. Here is the same study written as a structured abstract:
Background: Phone alerts may break focus during solo study, but controlled test data are scarce.
Objective: To test whether muting phone alerts improves focus and reading scores in college students.
Methods: In a randomized trial, 140 students at two universities completed a 30-minute reading task with phone alerts turned on or muted. Outcomes were a six-item focus scale and a 20-item test.
Results: The muted group reported higher focus (4.1 vs. 3.4) and higher test scores (15.2 vs. 13.6, p = .004), with the biggest gains among heavy phone users.
Conclusions: Muting phone alerts is a free, easy way to boost study focus and test performance.
How to Write Your Abstract in Five Steps
- Write it last: draft your abstract only after your results and discussion are final.
- Write one or two sentences for each of the five parts: pull directly from your intro, methods, results, and conclusion.
- Put real numbers in Results: include sample size, group means, percentages, or p-values.
- Trim to the word cap: cut throat-clearing phrases like "In this paper, the authors attempt to..."
- Cross-check every number: make sure every figure in your abstract matches your results tables.
Abstract Length and Format Rules
- Word limit: usually 150 to 250 words. APA 7 sets a strict 250-word cap.
- APA 7 layout: place it on page 2 after the title page. Center the bold label Abstract at the top. Write a single block paragraph with no first-line indent. Add Keywords: indented on the next line.
- Stand-alone rule: do not put citations, footnotes, or undefined acronyms in your abstract.
- Verb tense: use past tense for what you did and found ("We tested," "Scores rose") and present tense for what it means ("These results show").
Common Abstract Mistakes
- Writing vague results ("significant differences were seen") without stating direction or size.
- Making big claims in the abstract that do not appear in the main text.
- Copying and pasting your first intro paragraph instead of summarizing the whole study.
- Going even 5 words over the journal portal's text-box limit.
- Picking keywords that just repeat words already in your title.
Ready to submit your paper? Read our full guide on how to publish a research paper.
Our research paper editing service tightens your abstract to the exact word limit, while our Scopus Q1 and Q2 publication support aligns your abstract, intro, and cover letter. Writing a longer degree summary? See our thesis editing services.
Frequently Asked Questions
How long should an abstract be for a research paper?
Usually 150 to 250 words. APA style sets a maximum of 250 words; many journals allow 200 to 300 words, and structured medical abstracts can be longer. Always follow your journal's or instructor's limit.
Should I write the abstract first or last?
Last. The abstract summarizes the finished paper, so write it once your results and conclusions are final, then check that every claim in it appears in the paper.
Can an abstract include citations?
Generally no. Abstracts should stand alone. Avoid citations, undefined abbreviations, figures and tables unless the journal's guidelines explicitly allow them.
What tense should an abstract be written in?
Past tense for what you did and found ('We surveyed…', 'Scores increased…'), present tense for established knowledge and for your conclusions ('These findings suggest…').