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Diagnosis and Quantification

New Evidence for Semantic Relations Impairment in AD

Published in Neurological Diseases and Disorders Weekly, December 14th, 1998

An important feature of Alzheimer's disease (AD) that differentiates it from normal aging is the deterioration of semantic memory.

K.M. Sailor et al. conducted a study to determine if the poor performance of AD patients on tasks that require them to use semantic memory is related to their inability to identify specific semantic relations ("Evidence for an Impaired Ability to Determine Semantic Relations in Alzheimer's Disease Patients," Neuropsychology, October 1998;12(4):555-564).

"This hypothesis was tested by comparing the reaction times and error rates of AD patients to those of the normal elderly and normal young in a sentence verification...

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