01
Research focus
Fix input scope, inclusion/exclusion rules, evaluation time and success/failure criteria. Separate planned from later exploratory analyses.
02
Procedure and example
Keep dated protocol versions. Use an appropriate registry when independent timing is required, addressing privacy first; local storage here provides no independent timestamp.
03
Output and review
Deliver the protocol, amendment log and all eligible cases. Explain deviations while retaining the original plan.
Resources and methodological references
The procedures and exercises are editorial teaching suggestions. These resources provide textual, collection or open-research access; links imply no affiliation or endorsement.
Center for Open Science · Preregistration ↗
Further reading on preregistration and transparent reporting.
Editorial study material · 2026-09-28