| Summary: | Bias Blind Spot
(BBS) is the phenomenon that people tend to perceive themselves as less
susceptible to biases than others. In three pre-registered experiments (overall
N = 969), we replicated two experiments of the first demonstration of the
phenomenon by Pronin et al. (2002). We found support of the BBS hypotheses,
with effects in line with findings in the original study: Participants rated
themselves as less susceptible to biases than others (d = -1.00 [-1.33,
-0.67]). Deviating from the original, we found an unexpected effect that
participants rated themselves as having fewer shortcomings (d = -0.34 [-0.46,
-0.23]), though there was support for the target's main premise that BBS was
stronger for biases than for shortcomings (d = -0.43 [-0.56, -0.29]). Extending
the replications, we found that beliefs in own free will were positively
associated with BBS (r ~ 0.17–0.22) and that beliefs in both own and general
free will were positively associated with self-other asymmetry related to
personal shortcomings (r ~ 0.16–0.24). Materials, datasets, and code are
available on https://osf.io/3df5s/.
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