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Abstract: This is a follow-up of our earlier study on the aging of memory. The subjects were 210 healthy adults 20—90 years of age, divided into 7 age groups, matched both in sex and educational level. A "Clinical Memory Test" designed by us and standardized by a relevant nationwide cooperation research group was used, and 20 subjects in each group were also tested with the WAIS-RC. The results indicate:1) Generally, memory shows a decreasing tendency with age, beginning from the 50-year-old group on and becoming more marked after seventy. 2) The same decreasing tendency of memory is found in subjects of intelligence-level-matched 20-, 30-, 50-, 60- and 70-year-old groups. 3) Age difference is least apparent in the recognition of meaningless figures and the related-paired-association, and most apparent in the unrelatedpaired-association and the recall of the surnames and hobby characteristies of individuals in their pictures, indicating that the aged have great difficulty in establishing thoroughly new associations. On the basis of the above-mentioned, the authors suggest that memory difficulty of the aged could be the result of difficulty of interaction between encoding, storage and retrieval.

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