Small Group Research, Ahead of Print.
Entitativity is essential for individuals to experience a grouping of people as a “group.” However, entitativity is primarily studied at the individual level. If it is truly a fundamental component of group outcomes and processes, it should be considered a group-level construct. We establish that group members can share entitativity perceptions. We propose that entitativity develops in work and social groups through different self-categorization processes. Social groups can take advantage of top-down processes to establish similarity of goals and characteristics. Workgroups use both top-down and bottom-up processes with differing effects on these two forms of similarity. We propose that shared entitativity affects individual level attitudes and behavior. Results support our theoretical model. Shared entitativity explains between 2% and 11% of outcome variance in workgroups and 3% to 14% of the outcome variance in social groups. Shared similarity relates to shared entitativity differently for social and workgroups. Shared entitativity is theoretically and practically important for successful groups.