 Entitativity is highest for intimacy groups, such as the family, lower for task groups, lower yet for social categories (e.g., people of the same religion), and lowest for transitory groups, such as people waiting at the same bus stop (Lickel et al., 2000).Donald T. Campbell (1958) coined the term "entitativity" in order to explain why some groups are considered real groups while others are thought to be mere aggregates of individuals.He suggested that people rely on certain perceptual cues as they intuitively determine which aggregations of individuals are groups, and which are not (e.g.