It is best to register all of the planned analyses. Nonetheless, if an additional analysis only becomes apparent after the experiment is conducted, it is permissible to do additional post-hoc analyses, as long as you offer a defensible substantive or statistical rationale for the additional analysis and flag these as post hoc when writing up the data analysis. One of the strengths of registered research is that it makes transparent the distinction between confirmatory and exploratory analyses.
How does the review process for registered reports work?
In Stage 1, reviewers evaluate the importance of the research question and quality of the proposed design. At the conclusion of this stage, the editor
