Testing for Limits of Cognitive Reserve Capacity: A Promising Strategy for Early Diagnosis of Dementia?

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Abstract
Examination of the range and limits of cognitive reserve capacity (plasticity) by means of cognitive training is proffered as a promising diagnostic strategy for the early (premorbid) identification of dementia, particularly alzheimer's disease, in nonclinical populations. First data are presented from a sample of elderly independent-living people classified as healthy or at risk (beginning dementia) on the basis of a standardized psychiatric interview. Randomly assigned groups participated in a cognitive training program based onfigural relations, a component of fluid intelligence. Stepwise regression analyses demonstrated that only healthy elderly profited from training and that only post-training scores predicted the psychiatric “at risk” diagnosis. The results hold promise for further development of testing-the-limits of individual differences in cognitive reserve capacity to identify premorbid states of dementia in nonclinical samples

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