D. Berreby, Us and Them: The Science of Identity (Chicago: University of Chicago Press, 2008).
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Leyens et al., “The Emotional Side of Prejudice: The Attribution of Secondary Emotions to Ingroups and Outgroups,” PSPR 4 (2000): 186; K. Wailoo, Pain: A Political History (Baltimore: Johns Hopkins University Press, 2014).