We tested the ability of Alzheimer's patients and elderly controls to name living and non-living nouns, and manner and instrument verbs. Patients' error patterns and relative performance with different categories showed evidence of graceful degradation for both nouns and verbs, with particular domain-specific impairments for living nouns and…

Two studies are discussed. The first tested the effect of intervening material on the processing of subject-verb number agreement in Alzheimer's Disease patients and in normal elderly adults. The second examined the effect of intervening material on the processing of pronoun-antecedent number agreement in the same patients. (Author/VWL)