title: Nursery school as an inhibitor of working-class aggressive imitation.
mesh_terms: D000374:Aggression; D002652:Child Behavior; D002675:Child, Preschool; D006801:Humans; D007100:Imitative Behavior; D007266:Inhibition, Psychological; D008297:Male; D012578:Schools, Nursery; D012923:Social Class