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Accounts of prisoner abuse and other institutional violence often blame a few isolated individuals, but social psychology emphasizes social contexts, which can make almost anyone oppress, conform, and obey in abetting destructive social behavior. In this Policy Forum1, meta-analyses demonstrate the quantitative reliability and import of social contexts. Moreover, recent data show that initial reactions to low-status, oppositional outgroups may involve disgust and contempt, consistent with abuse. Together, social pressures and social prejudices help explain the recent abuse scandals. 1: http://www.sciencemag.org/cgi/content/full/306/5701/1482
Fiske et al. (Fri,) studied this question.