Definition: PARKing (preregistering after results are known) is defined as the practice where researchers complete an experiment (possibly with infinite re-experimentation) before preregistering. This practice invalidates the purpose of preregistration, and is one of the QRPs (or, even scientific misconduct) that try to gain only “credibility that it has been preregistered.”

Related terms: <a href='/glossary/harking/'>HARKing</a>, <a href='/glossary/preregistration/'>Preregistration</a>, Questionable Research Practices or Questionable Reporting Practices (QRPs)

References: Ikeda et al. (2019), & Yamada (2018)

Drafted and Reviewed by: Qinyu Xiao, Helena Hartmann, Sam Parsons, Yuki Yamada

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