Cognitive abilities profiles of Caucasian vs Japanese subjects in the Hawaii Family Study of Cognition |
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| Affiliation: | 1. Institute of Psychology, Russian Academy of Sciences, Moscow, Russia;2. Federal Institute of Development of Education, Moscow, Russia;3. University of Ulster, Coleraine, Northern Ireland BS52 1SA, United Kingdom;1. Yale School of Public Health, Laboratory of Epidemiology and Public Health, 60 College St, New Haven, CT 06510;2. Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, 310 Cedar Street, New Haven, CT 06510 |
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| Abstract: | General intelligence (the unrotated first principal component) was partialled out of the cognitive abilities factors—verbal ability, spatial ability, perceptual speed, and visual memory—obtained for the 15 tests of cognitive abilities used in the Hawaii Family Study of Cognition (HFSC). The resulting cognitive abilities profiles indicated that HFSC subjects of Caucasian ancestry scored higher relative to subjects of Japanese ancestry on the verbal and visual memory factors, but lower on the spatial and perceptual speed factors. This ethnic group difference in the shape of the cognitive abilities profiles was found to be highly consistent across sexes and generations, in spite of the large mean differences across these groups in factor scores. |
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