Pre-registration Discipline (Iron Law)

Skill type: DISCIPLINE-ENFORCING. This is not a how-to and not a reference. It exists to stop one specific failure mode — exploiting researcher degrees of freedom after seeing the data, then reporting the result as if it were planned. It governs when you are allowed to claim a confirmatory result; it does not teach you how to pick a test or fill an OSF form. Those are sibling skills (see the routing table).

THE IRON LAW

    NO DATA ANALYSIS WITHOUT A PRE-REGISTERED ANALYSIS PLAN FIRST.