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Crystallized and fluid intelligence in elderly patients with mild dementia of the Alzheimer type
Author(s)Osamu Matsuda, Masahiko Saito
Journal titleInternational Psychogeriatrics, vol 10, no 2, June 1998
Pagespp 147-154
KeywordsDementia ; Cognitive processes ; Evaluation ; Japan.
AnnotationTo examine early intellectual deficits in older patients with dementia of the Alzheimer type (DAT), 25 mildly impaired patients with DAT and 25 normal controls were compared using the Japanese version of the Wechsler Adult Intelligence Scale-Revised (WAIS-R). Based on Horn's modified fluid and crystallised model, the WAIS-R sub-tests were classified into two categories: fluid intelligence and crystallised intelligence. The DAT group showed a significantly lower crystallised intelligence score, whereas the fluid intelligence scores did not differ significantly between the two groups. When the sub-tests were examined individually, the sub-tests for crystallised intelligence (i.e., information, comprehension, and similarities) were found to show the most significant deficits. These results suggest that older subjects with mild DAT have more impaired crystallised intelligence than those without dementia. (AKM).
Accession NumberCPA-981103402 A
ClassmarkEA: DA: 4C: 7DT

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