Intergroup hostility biases how people judge group differences by valence

Evidence

These three forms of stereotype inaccuracy – stereotypic inaccuracy, dispersion inaccuracy, and valence inaccuracy – tend to take on certain expected directions in the intergroup literature, based on the notions that prejudice guides intergroup stereotypes. The most obvious effect of intergroup hostilities should be on valence inaccuracy, with actual group differences between the ingroup and the outgroup overestimated on dimensions that favor the ingroup and underestimated on dimensions that favor the outgroup. — John F. Dovidio, Peter Glick, Laurie A. Rudman, On the Nature of Prejudice, 863

Categorization

• XREF: connects to: Small derogatory perceived differences suffice to justify group advantage — John T. Jost and Jim Sidanius, Political Psychology: Key Readings, 3418; Perceived competence in envied outgroups fuels resentment-driven prejudice rather than reducing it. — Susan T. Fiske et al., A Model of (Often Mixed) Stereotype…, 302; Perceived illegitimacy and instability of status drives intergroup hostility — Nyla R. Branscombe and Bertjan Doosje (eds.), Collective Guilt: International…, 807