title: Expectancy in educable subnormal children and their normal mental age controls.
mesh_terms: D000293:Adolescent; D001288:Attention; D002648:Child; D004495:Education of Persons with Intellectual Disabilities; D006801:Humans; D008607:Intellectual Disability / Q000145:classification; D008297:Male; D011930:Reaction Time; D012057:Reinforcement, Verbal; D012718:Set, Psychology; D013997:Time Factors; D013998:Time Perception; D014796:Visual Perception