Study section
Definition
A study section is a panel of outside scientists that reviews NIH grant applications in a research area and scores their scientific merit. Since 2025, NIH's Center for Scientific Review (CSR) runs all of them; the score informs, but does not make, the funding decision.
How it works
A study section works as the first of NIH's two levels of peer review; the second is the advisory council of the institute that would fund the grant. The process:
- Assignment. CSR assigns each application to a study section and to a likely funding institute. Standing study sections have regular members and meet in a set area; special emphasis panels use ad hoc reviewers for areas such as fellowships, small business applications, and conflicts of interest. Since the August/October 2025 council round, CSR handles first-level review for all NIH funding opportunities, including ones institutes used to review themselves.
- Pre-meeting review. A scientific review officer (SRO) runs the panel and assigns each application to usually three reviewers, who write critiques and give preliminary scores.
- Meeting. Roughly the top half of applications are discussed. After discussion, every eligible member votes an overall impact score from 1 (exceptional) to 9 (poor).
- Summary statement. The applicant receives the reviewers' critiques, and for discussed applications a final impact score and, for many grant types, a percentile.
What reviewers evaluate
For most research project grants with due dates since January 25, 2025, NIH uses a simplified framework with three factors:
- Importance of the Research (significance and innovation), scored 1 to 9.
- Rigor and Feasibility (approach), scored 1 to 9.
- Expertise and Resources (investigators and environment), not scored; reviewers judge whether expertise and resources are appropriate or identify gaps.
Fellowship, career development, and training applications use their own criteria.
Why it matters for researchers
The study section matters because its score is the main input to whether an application gets funded. Applicants can request a study section in the PHS Assignment Request Form, and choosing a panel whose members know the field affects how the work is read. After review, the applicant's contact shifts from the SRO to the program officer.
Study section vs NSF merit review
NIH study sections give numeric impact scores, while NSF panels rate proposals on intellectual merit and broader impacts using categories such as Excellent, Very Good, Good, Fair, and Poor, and the NSF program director makes the funding recommendation.
Common mistakes
- Writing for specialists only, when several panel members will be outside the subfield.
- Ignoring the assignment request and landing in a poorly matched panel.
- Treating "not discussed" as a final verdict instead of reading the critiques for a resubmission.
How Atom helps
Atom's AI reviewer critiques a draft against NIH study section criteria before submission, flagging weaknesses a panel is likely to raise while there is still time to fix them.
Frequently asked questions
An NIH study section is a panel of outside scientists that reviews and scores grant applications in a research area. Its scores and critiques go to the funding institute, which makes the final decision.
Reviewers score each discussed application from 1 (exceptional) to 9 (poor). NIH averages the scores and multiplies by 10, giving a final impact score from 10 to 90.
You can request one. The PHS Assignment Request Form lets applicants suggest a study section and institute, and NIH usually considers the request, though CSR makes the final assignment.