A Word of Caution about Many Labs 4: If You Fail to Follow Your Preregistered Plan, You May Fail to Find a Real Effect

  title={A Word of Caution about Many Labs 4: If You Fail to Follow Your Preregistered Plan, You May Fail to Find a Real Effect},
  author={Armand Chatard and Gilad Hirschberger and Tom Pyszczynski},
A team of 37 researchers (Many Labs 4; Klein et al., 2019) has recently reported that it has failed to replicate the effect of mortality salience on worldview defense – a classic finding from terror management theory (TMT). This collaborative project (21 labs, N = 2220) has the potential to provide useful information regarding the robustness of an often-replicated and influential empirical finding. However, Klein et al. (2019) deviated from their preregistered plan by including smaller samples… 

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