Out-group bias expressions peak where dominance motives meet high self-assessed fighting ability.

Evidence

The greatest expressions of out-group bias then should be displayed by men who most strongly desire to dominate the out-group and who also perceive themselves as being best equipped to overcome the steep costs of conflict. — Roderick M. Kramer, Geoffrey J. Leonardelli, Robert W. Livingston, Social Cognition, Social Identity, and…, 1265

Categorization

• corroborated: 2 independent passages support this claim — Roderick M. Kramer, Geoffrey J. Leonardelli, Robert W. Livingston, Social Cognition, Social Identity, and…, 1265