Productive naming and memory in depression and Alzheimer's type dementia

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Abstract
Patients with mild to moderate dementia of the Alzheimer's type (DAT), patients with major depression, and normal controls completed tests of productive naming and verbal recall memory. Both depressed and DAT patients demonstrated reduced verbal fluency on productive naming tasks, indicating limited utility of such tasks in differential diagnosis. There was a stronger relationship between verbal fluency and memory in DAT patients than in depressed patients. The linguistic component as well as the requirement for cognitive speed may be important in explaining the deficit of DAT patients on productive naming tasks. In contrast, the speed component may be particularly important for depressed patients whose poor performance may reflect a motivational deficit.

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