title: Free-learning among intellectually average children and mentally retarded individuals: a study of response integration.
mesh_terms: D000293:Adolescent; D000328:Adult; D001077:Aptitude Tests; D001244:Association; D002648:Child; D003463:Cues; D004495:Education of Persons with Intellectual Disabilities; D005260:Female; D006801:Humans; D008607:Intellectual Disability; D007360:Intelligence; D008297:Male; D008568:Memory; D010153:Paired-Associate Learning; D014706:Verbal Learning; D014796:Visual Perception