Using a recently created preemptive strike game (PSG) with 176 participants, we investigated if the motivations of spite and/or fear promotes aggression that requires a small cost to the aggressor and imposes a larger cost on the opponent, and confirmed the earlier finding that fear does but spite does not promote intergroup aggression when the groups are characterized as minimal groups; additi...

Violent instances of intergroup conflict in recent memory have usually involved cultural groups, but theory and research on the psychology of intergroup relations is largely culture free. The two most prominent theories, realistic group conflict theory (RGCT) and social identity/self-categorization theory (SIT/SCT) provide fundamental insight into basic processes in intergroup relations: (1) th...

We review emerging research on the psychological and biological factors that underlie social group formation, cooperation, and conflict in humans. Our aim is to integrate the intergroup neuroscience literature with classic theories of group processes and intergroup relations in an effort to move beyond merely describing the effects of specific social out-groups on the brain and behavior. Instea...

Three studies investigated the role of intergroup satisfaction in intergroup confl ict. After reading about real acts of aggression committed by an ingroup, participants reported how those actions made them feel and how much they would support similar aggression in the future. In all three studies, experiencing intergroup satisfaction increased support for similar aggression, whereas experienci...

Whereas much social psychological research has studied the in-group and out-group implications of social categorization and collective identity ("we"), little research has examined the nature and relevance of collective psychological ownership ("ours") for intergroup relations. We make a case for considering collective psychological ownership as an important source of intergroup tensions. We do...

We present a model of intergroup relations focused on the role of the in-groupfavoring norm as capable of facilitating positive intergroup relations. We begin by defining the in-group-favoring norm and describing how it affects self-evaluations and evaluations of out-group members. We then outline how positive intergroup relations may result via the implementation of specific techniques fundame...