Effects of co-observer's sanctions and adult presence on imitative aggression.
D000374:Aggression; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007100:Imitative Behavior; D007398:Interpersonal Relations; D008297:Male; D008960:Models, Psychological; D009040:Motion Pictures; D012054:Reinforcement, Psychology; D012932:Social Facilitation