Primate grooming as a tension reduction mechanism.
D000374:Aggression; D000818:Animals; D000831:Animals, Newborn; D001007:Anxiety; D003163:Competitive Behavior; D005260:Female; D006120:Grooming; D006126:Group Processes; D000882:Haplorhini; D006801:Humans; D008297:Male; D011323:Primates; D012737:Sex Factors; D012726:Sexual Behavior, Animal; D012919:Social Behavior; D012930:Social Dominance; D013045:Species Specificity