Visual discrimination and response reversal learning by aphasic subjects.
D000368:Aged; D001037:Aphasia; D004193:Discrimination Learning; D005793:Generalization, Psychological; D006801:Humans; D008297:Male; D008875:Middle Aged; D011340:Problem Solving; D012054:Reinforcement, Psychology; D013997:Time Factors; D014705:Verbal Behavior; D014785:Vision, Ocular