Are Preregistration and Registered Reports Vulnerable to Hacking?

To the Editor: Preregistration of study hypotheses has been proclaimed as the “revolution”1 to curb publication bias and data dredging such as p-hacking and HARKing, i.e., hypothesizing after results are known. Many publishers encourage preregistration in their submission policies,2 and a similar trend is being seen in registered reports, which are preregistration of a study plan, prereview, and acceptance for publication, all before...