A Theoretical Model of Victimization, Perpetration, and Denial in Mass Atrocities: Case Studies From Indonesia, Cambodia, East Timor, and Myanmar.

We introduce a new model, "TOPASC: A Theory of the Psychology of Atrocities in Societal Contexts," to explain why people justify mass killings and why certain group members are consistently targeted. In our model, we explore how mass atrocities against specific groups are influenced by psychological dynamics in intergroup situations which, in turn, are shaped by socio-historical contexts and individual psychologies. To illustrate these ideas, we analyze four cases of mass atrocities in Southeast Asia: Indonesia, Cambodia, East Timor, and Myanmar. These cases highlight how different social groups, characterized by diverse ideologies, ethnicities, genders, or religions, exhibit varying vulnerabilities as perpetrators or victims based on their social and power status. Mass atrocities are not sudden occurrences but rather result from a series of complex processes and events.