Examines violence both in tribal and modern societies and explores Dr. Prescott's S-SAD theory, both the cross-cultural and the neuropsychological aspects. Video documents that palecerebellar decortication eliminated pathological violent behaviors including self-mutilation and permits positive prosocial, affectional and alert behaviors in the adult mother-deprived monkey that was not possible before surgery, thus confirming Dr. Prescott's SSAD theory that the cerebellum has a major role in the regulation of emotional-social behaviors, particularly depressive and violent behaviors. -1976