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aer-preregistration

separate

Use when the project collects primary data or runs a field, lab, or survey experiment, before the intervention begins — write the pre-analysis plan, size the sample from a power calculation, and register with the AEA RCT Registry. Apply after the design is chosen in aer-identification and before any outcome data are seen.

When to use

• The paper runs a randomized controlled trial (field, lab, or survey experiment)
• The project collects primary data whose analysis should be pre-committed
• A referee or editor asks for the trial registration number or the PAP
• Reviewers suspect the reported specification was chosen after seeing outcomes
• You must justify the sample size, or explain why an effect was "not detected"

When not to use

• observational designs
• secondary or observational data already realized
• tasks after outcome data are seen

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