Representing multiple group memberships as overlapping raises tolerance for diversity

Evidence

As a theory of group identity, optimal distinctiveness theory leads to the conclusion that there are limits on the degree of inclusiveness that defines any one in-group identity. This limitation motivated my search for mechanisms that will increase capacity for inclusiveness and led to the development of social identity complexity theory (Roccas & Brewer, 2002), conceptualizing the ways in which individuals subjectively represent the relationships among their multiple in-group memberships and how this moderates attitudes toward diversity and intergroup relations. — Roderick M. Kramer, Geoffrey J. Leonardelli, Robert W. Livingston, Social Cognition, Social Identity, and…, 2511

Categorization

• DEFINE: Social identity complexity theory: individuals who represent their multiple group memberships as overlapping/nested (rather than separate) show more inclusive attitudes.
• corroborated: 2 independent passages support this claim — Roderick M. Kramer, Geoffrey J. Leonardelli, Robert W. Livingston, Social Cognition, Social Identity, and…, 2511