Growth in social competence in institutionalized mentally retarded children.
D002648:Child; D002674:Child, Institutionalized; D002675:Child, Preschool; D004495:Education of Persons with Intellectual Disabilities; D006778:Hospitals, Psychiatric; D006801:Humans; D008607:Intellectual Disability / Q000628:therapy; D010988:Play and Playthings; D011613:Psychotherapy; D012919:Social Behavior