Every paper has one sentence that does the heaviest work: the contribution sentence. Get it right and the rest of the manuscript writes itself. Get it wrong and reviewers will sense the drift across twelve pages, even if they can't name what's off.
What is a contribution sentence?#
It states, in one sentence, what your paper adds to the literature that did not exist before. Not what you studied — what you added. The distinction matters because most rejected papers describe the work without ever naming the contribution.
The contribution sentence formula#
After working with hundreds of drafts, we landed on a three-part structure that holds across disciplines: position, gap, move.
Position#
Where the field currently stands on this question. One clause. Cite the canonical work, not the most recent paper. "The literature on adolescent screen-time has converged on a small but consistent negative association with sleep duration."
Gap#
What that position cannot yet explain or do. One clause, opened with a turn-word — however, yet, but. "However, mechanisms linking screen exposure to specific stages of sleep architecture remain untested in adolescent samples."
Move#
What you do about it. One clause, in the active voice. "This paper measures stage-resolved sleep architecture in 412 adolescents across two weeks of natural screen-time variation." Three clauses, one sentence, one contribution. That's it.
Examples from real papers#
Look at three or four canonical papers in your field and you'll spot the same shape. Once you see it, you can't unsee it.
When I tell mentees to find their contribution sentence in their own draft and they can't, that's the moment we know the paper isn't ready for review.
Where it lives in your manuscript#
Two places, ideally identical: the last sentence of your abstract and the last sentence of your introduction. Some authors restate it as the first sentence of the discussion to bookend the paper. Pick a wording and stick to it everywhere it appears.
Common anti-patterns#
- "This paper studies X" — describes the topic, names no contribution
- "To the best of our knowledge, this is the first paper to…" — defensive; lean on the gap clause instead
- Three contributions stacked into one sentence — split into separate papers or pick the strongest
- Mismatched contribution between abstract and introduction (reviewers will catch this)
Wrapping up#
Spend a disproportionate amount of time on the contribution sentence — 90 minutes is not too much for the single sentence reviewers will read first. The payoff is a paper that knows what it's about, which is the single most reliable predictor of acceptance.
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Reviewed before going live. Repeat commenters auto-approved.James Okonkwo
The position-gap-move framing saved my literature review chapter. I wrote it on a sticky note above my laptop.