We review psychological research on intergroup conflict. First, we outline psychological
perspectives on forms and functions of groups. Second, we present the most influential …

Drawing on an idea proposed by Darwin, it has recently been hypothesized that violent
intergroup conflict might have played a substantial role in the evolution of human …

Conflict can profoundly affect individuals and their groups. Oftentimes, conflict involves a
clash between one side seeking change and increased gains through victory and the other …

Intergroup conflict persists when and because individuals make costly contributions to their
group's fighting capacity, but how groups organize contributions into effective collective …

All conflicts involving three or more or agents can be described using a vocabulary of only
four interaction types. Analyzing the cost/benefit calculations of each agent's role within …

Peaceful intergroup relations deteriorate when individuals engage in parochial cooperation
and parochial competition. To understand when and why intergroup relations change from …

Although humans qualify as one of the most cooperative animal species, the scale of violent
intergroup conflict among them is unparalleled. Explanations of the underlying motivations …

Abstract The contribution by De Dreu and Gross oversimplifies the complexity of the topic. I
provide counterarguments that undermine the two swee** contentions on which the …

While some species have affiliative and even cooperative interactions between individuals
of different social groups, humans are alone in having durable, positive-sum, interdependent …

Intergroup conflict can be modeled as a two-level game of strategy in which prosociality can
take the form of trust and cooperation within groups or between groups. We review recent …