title: Sex differences in extinction of operant responding by educable retarded and nonretarded children.
mesh_terms: D000293:Adolescent; D002648:Child; D002674:Child, Institutionalized; D003216:Conditioning, Operant / Q000295:instrumentation; D004495:Education of Persons with Intellectual Disabilities; D005108:Extinction, Psychological; D005260:Female; D006801:Humans; D008607:Intellectual Disability; D007360:Intelligence; D008297:Male; D012054:Reinforcement, Psychology; D012737:Sex Factors; D013997:Time Factors