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Monday
Aug282017

Rumors of the “Non-Replication” of the “Motivated Numeracy Effect” are Greatly Exaggerated

This paper does three things. First, it describes the design defects (principally, the lack of statistical power) that make it misleading for Ballarini & Sloman (2017) to claim that they “failed to replicate” the results of Kahan, Peters et al. (2017). Second, it presents the positive results of our own replication study. Third, it discusses the vitiation of the utility of replications in social psychology as a progressive science when researchers report “nonreplications” without the “faithful recreation of a study with high statistical power” (Brandt, Ijezman, et al. 2014, p. 217).

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