title: Group structures in retarded adolescents.
mesh_terms: D000293:Adolescent; D002648:Child; D004495:Education of Persons with Intellectual Disabilities; D005260:Female; D006127:Group Structure; D006801:Humans; D008607:Intellectual Disability; D007398:Interpersonal Relations; D008297:Male; D010379:Peer Group; D012737:Sex Factors; D012928:Social Desirability; D012963:Sociometric Techniques