title: An experimental evaluation of tokens as conditioned reinforcers in retarded children.
mesh_terms: D000293:Adolescent; D000328:Adult; D001521:Behavior Therapy; D002648:Child; D002675:Child, Preschool; D003213:Conditioning, Psychological; D004495:Education of Persons with Intellectual Disabilities; D006801:Humans; D008607:Intellectual Disability / Q000628:therapy*; D012056:Reinforcement, Social; D012201:Reward