Preregistration is the practice of registering the hypotheses, methods, or analyses of a scientific study before it is conducted.[1][2]Clinical trial registration is similar, although it may not require the registration of a study's analysis protocol. Finally, registered reports include the peer review and in principle acceptance of a study protocol prior to data collection.[3]
Preregistration can have a number of different goals,[4] including (a) facilitating and documenting research plans, (b) identifying and reducing questionable research practices and researcher biases,[5] (c) distinguishing between confirmatory and exploratory analyses,[6] (d) transparently evaluating the severity of hypothesis tests,[7] and, in the case of Registered Reports, (e) facilitating results-blind peer review, and (f) reducing publication bias.[8]
A number of research practices such as p-hacking, publication bias, data dredging, inappropriate forms of post hoc analysis, and HARKing may increase the probability of incorrect claims. Although the idea of preregistration is old,[9] the practice of preregistering studies has gained prominence to mitigate to some of the issues that are thought to underlie the replication crisis.[1]
^ abCite error: The named reference Nosek et al. (2018) was invoked but never defined (see the help page).
^Cite error: The named reference Wagenmakers et al. (2012) was invoked but never defined (see the help page).
^Lakens, Daniël (2019). "The value of preregistration for psychological science: A conceptual analysis". Japanese Psychological Review. 62 (3): 221–230. doi:10.24602/sjpr.62.3_221.
^Bakan, David (1966). "The test of significance in psychological research". Psychological Bulletin. 66 (6): 423–437. doi:10.1037/h0020412. PMID5974619.