title: Resistance to extinction and frustration in retarded and nonretarded children.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D002648:Child; D002652:Child Behavior; D002675:Child, Preschool; D003216:Conditioning, Operant; D004193:Discrimination Learning; D004495:Education of Persons with Intellectual Disabilities; D005108:Extinction, Psychological; D005260:Female; D005639:Frustration; D006801:Humans; D008607:Intellectual Disability / Q000628:therapy; D007361:Intelligence Tests; D008297:Male; D012055:Reinforcement Schedule; D012056:Reinforcement, Social; D012201:Reward