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Overconfidence and Prejudice

Paul Heidhues¹; Botond Kőszegi²; Philipp Strack³

¹ DICE, Heinrich-Heine University Düsseldorf , · ² University of Bonn · ³ Yale University

Abstract We develop a model of multi-dimensional misspecified learning in which an overconfident agent learns about groups in society from observations of his and others’ successes. We show that the average person sees his group relative to other groups too positively, and this in-group bias exhibits systematic comparative-statics patterns. First, a person is most likely to have negative opinions about other groups he competes with. Second, while information about another group’s achievements does not lower a person’s prejudice, information about economic or social forces affecting the group can, and personal contact with group members has a beneficial effect that is larger than in classical settings. Third, the agent’s beliefs are subject to “bias substitution”, whereby forces that decrease his bias regarding one group tend to increase his biases regarding unrelated other groups.

DOI

10.1093/restud/rdaf048

Volume

93 (2)

Pages

968-1000

Language

en

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