Male intergroup violence evolved to secure reproductive resources via dominance

Evidence

Using parental investment and sexual selection theory, the preceding arguments provide a theoretical basis for the expectation that males should be the primary agents of violent intergroup conflict and that this agency is motivated by a desire to dominate out-groups in the service of obtaining valuable reproductive resources. — Roderick M. Kramer, Geoffrey J. Leonardelli, Robert W. Livingston, Social Cognition, Social Identity, and…, 1189

Categorization

• corroborated: 2 independent passages support this claim — Roderick M. Kramer, Geoffrey J. Leonardelli, Robert W. Livingston, Social Cognition, Social Identity, and…, 1189