Intergroup Theory explains why humans favor their own group, compete with others, and sometimes cooperate despite differences ...

When people reach for the same object, walk through a narrow doorway, forage for food, or work together on a shared task, ...

The in-group/out-group divide. Source: TherapyEverywhere/Open AI Human beings need to belong. From our earliest cave-dwelling ancestors, membership in a clan or tribe was a requirement for survival.

The scientific study of both internal mental processes and observable behavior is known as psychology. It explains activities by methodical research. Clinical, cognitive, social, and I-O psychology ...

Lewen D, Ivanov V, Dehning J, Ruß J, Fischer A, Penke L, Schacht A, Gail A, Priesemann V, Kagan I (2025). Continuous dynamics of cooperation and competition in social decision-making. Communications ...

Evolutionary psychology provides a foundational framework for understanding how cognitive and behavioral traits have evolved in response to recurring ...