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<b>Original citation.</b> Kurzban, R., Tooby, J., & Cosmides, L. (2001). Can race be erased? Coalitional and social categorization.<em> Proceedings of the National Academy of Sciences of the United States of America, 98</em>, 15387–15392 <b>Target of replication</b>. When encountering an unknown individual, social categorization of the individual has been shown to automatically proceed on the basis of three fundamental dimensions: People seem to mandatorily encode race, sex and age. In contradiction to this general finding, Kurzban et al. (2001) showed that race encoding is not automatic and inevitable, but rather a byproduct of categorization in terms of coalitions. In particular, they argue and empirically support that when other coalitional information is present, the encoding of race is spectacularly reduced. In the present contribution, we present a replication of the race-erased effect reported by Kurzban et al. <b>A priori replication criterion.</b> A succesful replication would find a decrease in race encoding and an increase in coalitional encoding when coalitional cues are available. <b>Conclusions.</b> Our replication qualitatively supports the results reported by Kurzban et al. (2001). Our sample exceeded the requirement and the experimental setup mimicked—as closely as possible—the original experiment. The planned <em>t</em>-tests confirmed the crucial hypotheses: We found that, in the context of a memory confusion protocol, the encoding of an individual’s race decreases when a visual cue of team membership is introduced, and that the encoding of coalition increases when introducing such a cue. These findings were further supported by additional analyses of effect sizes and Bayesian <em>t</em>-tests. We did not, however, find support for the thesis that the encoding of race is entirely erased in a coalitional context. Indeed, the effect size for the reduction in race encoding was substantially lower than in the original study, and consequently, a Bayesian <em>t</em>-test revealed only “anecdotal evidence” in favor of a reduction effect. <p><a href=" http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.01035/abstract" rel="nofollow">view the manuscript</a></p> <b>Methodological details component.</b> Experiment planning prior to data collection, stimuli, procedure and R script for power calculations. <b> Data + Code component.</b> Data files and R scripts for analyses.
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