Increasing social play of severely retarded preschoolers with socio--dramatic activities.
D001521:Behavior Therapy; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000534:rehabilitation*; D008297:Male; D010988:Play and Playthings; D011577:Psychodrama; D012057:Reinforcement, Verbal; D012381:Role Playing