Abstract

Current psychological perspectives emphasize “attack” and “defense” as the behavioral mechanisms underlying conflict. Here, we extend this view by highlighting the relevance of pathological altruism and the neuroendocrine pathways associated with hostile behaviors. Specifically, we elucidate the modulatory role of the neuropeptide hormone oxytocin in motivating extraordinary levels of in-group commitment that can promote extreme behaviors and endure conflict with out-groups.