People perceive groupness either through stable shared traits or through goal-driven process

Evidence

Specifically, the essence theory of entitativity emphasizes the general attributes (traits, stereotypes) characterizing a group, focuses on similarity and consistency among group members in their attributes and behaviors, highlights clear intergroup distinctions in these regards, and views the group as being consistent across time. In contrast, the agency theory of entitativity is process oriented, emphasizing a group’s goals; expects heterogeneity among group members; considers the group’s relations with (rather than similarities or differences with) outgroups; and expects dynamic change in the group over time. — Roderick M. Kramer, Geoffrey J. Leonardelli, Robert W. Livingston, Social Cognition, Social Identity, and…, 228

Categorization

Category: Definitional Content

  • DEFINE: Defines the two competing theories of perceived groupness: essence (traits/similarity/outgroup distinctions/stability) vs agency (goals/heterogeneity/ingroup-outgroup relations/change).