title: Shifts in conceptual thinking by organically and familial retarded adolescents and adults.
mesh_terms: D000293:Adolescent; D000328:Adult; D001925:Brain Damage, Chronic / Q000175:diagnosis; D003118:Color Perception; D003210:Concept Formation; D003463:Cues; D004192:Discrimination, Psychological; D004495:Education of Persons with Intellectual Disabilities; D005246:Feedback; D005260:Female; D005556:Form Perception; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D007361:Intelligence Tests; D008297:Male; D008875:Middle Aged; D011340:Problem Solving; D014705:Verbal Behavior