This article proposes that all psychologists-and all psychologies-are innately concerned with justice, and yet there is no consensually defined discipline of psychology, and no consensual understanding of social justice. Adopting an intergroup and identitybased model of what is and what should be, we will describe the mechanisms whereby identities and perceptions of justice are formed, contested, and changed over time. We will argue that psychological research and practice have implications for social justice even where-and perhaps especially when-these are not made (...) explicit. Psychology is considered as the product of diverse groups with distinct and evolving identities, and with differential access to resources and power, which dynamically contest different normative perceptions of justice. (shrink)

Whitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.