| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
The aim of this study was to examine age-related change in intelligence and to identify its psychosocial factors among Japanese middle-aged and elderly. The 12-year data from gender- and age-stratified random samples (approximately 2,300 people) were used in this study.
The main results were as follows. (1) Age-related change in intelligence depended on each intellectual domain. Additionally, individual differences in intellectual change was evident at all ages. (2) For the middle-aged, higher levels of education was partly associated with improvement of intelligence. (3) For the elderly, prevention of depressive symptoms, trait of openness to experience and participation in culture activities were protective factors of intellectual decline.
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