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Abstract:
Research on ostracism has mostly focused on ostracized targets’ reactions to being excluded and ignored. In contrast, the ostracizing sources’ perspective and reasons for why individuals decide to ostracize others are still a largely unexplored frontier for empirical research. We propose two fundamental motives situated in the target’s behavior that drive motivated ostracism decisions for the benefit of one’s group: A perceived norm violation of the target and perceived expendability of the target for achieving group goals. Two survey studies and five experiments (total N = 2,394, all preregistered) support our predictions: When asked to recall a recent ostracism decision and the motives for it, participants reported both perceived norm violations and/or expendability of the target as motives (Study 1). Switching to the target perspective, the frequency of experienced ostracism was associated with both self-perceived norm violations and expendability (Study 2). In five experiments (Studies 3–7), participants consistently choose to ostracize targets more often when they perceived them to be either norm-violating, or inept in a skill important for the group and thus expendable. Additionally, Studies 5–7 show that strategic considerations about the requirements of the situational context influence ostracism decisions: Participants were more likely to ostracize norm-violating targets in cooperative contexts, and more likely to ostracize inept targets in performance contexts. Results have strong theoretical implications for research on ostracism and group dynamics, as well as for interventions targeting ostracism behavior: Particularly, adjusting the requirements of the situational context might be a viable option to decrease ostracism and promote inclusion in groups.
