The 10 Most Common IRB Application Mistakes

IRB reviewers see the same ten mistakes in first-time applications, year after year. Almost all of them are avoidable without changing your study design. This list is based on the pattern of revision requests, not on theoretical ethics failures — these are the comments that will come back to you on your revision memo if you do not catch them in drafting.

1. Guessing the review level

Applicants select "exempt" when the study is actually expedited, or "expedited" when sensitive content pushes it to full board. The review level is determined by criteria in 45 CFR 46.104 and 45 CFR 46.110, not by applicant preference. If you are unsure, email your IRB coordinator a one-paragraph summary and ask for a pre-check. Our review categories overview lays out the decision criteria.

2. Mismatch between protocol and consent form

The protocol says interviews take 45 minutes; the consent form says 30. The protocol mentions audio recording; the consent form does not. Reviewers cross-check these documents line by line. Before submitting, open both side by side and reconcile every fact — duration, activities, recording, compensation, data retention.

3. Consent forms that read like contracts

Dense legal paragraphs written in passive voice will trigger a readability rewrite. Target an eighth-grade reading level. Use "you" and "we." Short sentences. Subheads. Bullets. The consent form guide shows what this looks like in practice.

4. Missing recruitment materials

Every text a participant might see must be attached: flyer, email, social media post, verbal script. Reviewers treat missing materials as evidence that the plan is not finalized. Write them first, not last.

5. Vague data security language

"Data will be stored securely on a password-protected computer" is not enough. Specify the platform (university-managed OneDrive, REDCap, encrypted external drive), who has access, how long it will be retained, and what destruction looks like. Our data management plan template covers the expected fields.

6. Unjustified sample size

Quantitative protocols get flagged when the sample size appears without justification. State the analytic approach, the effect size assumed, the power, and the software used. For qualitative studies, justify sample size by saturation logic, not statistical power. Dissertation students in particular get hit by this — for a structured approach to the full dissertation IRB workflow, see The Dissertation Compass.

7. Conflating waiver types

A waiver of documentation (no signature) is different from a waiver of consent (no consent process). The regulatory bases are different: 45 CFR 46.117(c) for documentation and 45 CFR 46.116(f) for consent. Cite the correct one and label which you are requesting.

8. Overstated benefits

"This study will help society understand X" is a societal benefit, not a direct benefit to the participant. Listing it under "benefits to participants" triggers a revision request. Keep direct and societal benefits in separate sentences.

9. Missing debriefing and referral resources

For studies touching on mental health, trauma, substance use, or safety, reviewers expect a debriefing script and a list of support resources (hotlines, counseling services). Missing this is the single most common reason a sensitive-topic study gets returned.

10. Training certificates not uploaded

CITI training certificates for every listed personnel must be current and attached. Expired certificates are treated as missing. Confirm all co-investigators and research assistants have completed the Human Subjects Protection modules before submission.

Bonus mistake: submitting the night before a deadline

Full board submissions have a meeting calendar. If your institution convenes the IRB on the first Tuesday of each month and requires submission ten days in advance, missing the window by a day pushes you a full month. Exempt and expedited do not have this constraint, but IRB coordinators are human and reviewer loads rise near academic deadlines. Submit early enough to absorb one revision cycle.

The pattern behind the list

Nine of the ten mistakes above are consistency and specificity failures, not ethics failures. Your study is almost certainly ethical. The question is whether your documents say, precisely and consistently, what you intend to do. A checklist pass and a read-through with a skeptical friend will catch most of it. Every hour spent here saves roughly three hours of revision time. That ratio is worth internalizing before you submit.