Most ingroup bias overvalues the ingroup rather than devaluing the outgroup

Evidence

Whereas social categorization can initiate intergroup biases, the type of bias due largely to categorization alone primarily represents a pro-ingroup orientation (i.e., preference for ingroup members, or love-prejudice in Allport’s words, rather than an anti-outgroup orientation, i.e., hateprejudice) usually associated with hostility or aggression. — John F. Dovidio, Peter Glick, Laurie A. Rudman, On the Nature of Prejudice, 555

Categorization

• DEFINE: Clarifies Allport’s love-prejudice vs hate-prejudice distinction, which is easy to elide.
• corroborated: 2 independent passages support this claim — John F. Dovidio, Peter Glick, Laurie A. Rudman, On the Nature of Prejudice: Fifty Years…, 555
• XREF: connects to: Misperceived outgroup extremity drives real polarization through a self-fulfilling spiral.; Work structure creates the need for bias while society supplies its content — Michael Lipsky, Street-Level Bureaucracy: Dilemmas of…, 1049; Cross-partisan exposure backfires because the outgroup posts encountered are mostly derogatory — Sander van der Linden, Foolproof: Why Misinformation Infects…, 458