Abstract
The diagnostic sensitivity of a profile (Fuld, 1984) thought to mark cholinergic changes in Alzheimer's Disease (AD) was examined in a sample of 53 patients meeting criteria for AD on two occasions and in 19 patients for three occasions. The low obtained sensitivities of the Fuld profile (17%-26%) across testings is consistent with previous studies that used a single time point. The findings also revealed unstable positive and negative profiles over time. There were no performance differences on intellectual or memory measures when comparing subjects identified as positive or negative by the Fuld index. The results demonstrate that the index is insensitive to the dementing process and is a poor diagnostic marker for AD.
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