title: Conceptual deficits and aging: the Category Test.
abstract: Category Test performance of 41 bright aged normals was compared with the performance of 40 young normals and a group of 43 patients with suspected neurological dysfunction. The aged normals were not only as deficient as the neurologic patients but showed a similar pattern of deficits on Category subtests. The extreme difficulty experienced by aged normals and patients on Subtests III and IV was explained as a function of task complexity rather than of conceptual difficulty of conceptual principles and task complexity in a variety of impaired groups was suggested.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D003210:Concept Formation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009422:Nervous System Diseases / Q000523:psychology; D011340:Problem Solving; D011581:Psychological Tests