Extremely small ingroups trigger antagonism toward them only under an aroused need for inclusion

Evidence

Specifically, identity antagonism would occur—where individuals identify more with the superordinate group than the subgroup—when the subgroup’s size was extremely small and the need for inclusion was aroused. Otherwise, individuals were expected to identify to similar degrees with their subgroup and superordinate group categories (thereby reporting a dual identity). — Roderick M. Kramer, Geoffrey J. Leonardelli, Robert W. Livingston, Social Cognition, Social Identity, and…, 721

Categorization

• corroborated: 2 independent passages support this claim — Roderick M. Kramer, Geoffrey J. Leonardelli, Robert W. Livingston, Social Cognition, Social Identity, and…, 721