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E-ISSN : 2733-4538
The Digit span and the Spatial span test are neuropsychological tests most commonly used for the evaluating short-term memory. As short-term memory capacity is stable in normal aging process, the unusual decrement of the span measures could signify pathological aging, such as the dementia of the Alzheimer's type(DAT). This study was conducted to examine the demographic variables contributing to the span performance, and to obtain normative data for the elderly Korean population in the Digit span and the Spatial span. Education and age were associated with all span measures, and literacy was associated with the Digit span performance. Mild DAT patients obtained lower scores in the Spatial span test, whereas no significant difference was found between the normal group and mild DAT patents in the Digit span test. These results suggest the Spatial span impairment could be a good early indicator for the Alzheimer's disease.
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