Alzheimer's disease.
D000368:Aged; D000544:Alzheimer Disease / Q000175:diagnosis / Q000523:psychology*; D003072:Cognition Disorders / Q000175:diagnosis / Q000523:psychology; D005260:Female; D006801:Humans; D007806:Language Disorders / Q000175:diagnosis / Q000523:psychology; D008297:Male; D008875:Middle Aged; D012660:Semantics; D013066:Speech-Language Pathology; D014705:Verbal Behavior