title: Verbal operant conditioning with young institutionalized Down's syndrome children.
mesh_terms: D002648:Child; D002674:Child, Institutionalized; D002675:Child, Preschool; D003216:Conditioning, Operant; D004314:Down Syndrome / Q000534:rehabilitation*; D004495:Education of Persons with Intellectual Disabilities; D005260:Female; D006801:Humans; D007360:Intelligence; D007804:Language Development; D008297:Male; D010379:Peer Group; D012056:Reinforcement, Social; D013070:Speech Therapy; D014706:Verbal Learning