Abstract
Abstract The aim of this study was to compare cognitive factor structures, derived from the selected 14 cognitive test scores, across different ethnic groups (Koreans, Caucasian-Americans, and Japanese-Americans). The cognitive scores obtained from 661 Korean, 1,843 Caucasian-American, and 549 Japanese-American parents and their offspring, were subjected to principal component analyses and subsequent varimax rotation. These factor structures were compared by the method developed by Kaiser, et. al. (1971). Five interpretable factors, perceptual speed, word fluency, visual memory, spatial rotation, and inference, were found for the Korean samples, and four essentially identical factors, spatial, verbal, perceptual speed, and visual memory, for the Caucasian-and Japanese-Americans, for both parents and offspring. Overall, there was a high degree of similarity in the structure of cognitive factors across different groups. However, within this common pattern for cognitive functioning, specific environmental st...
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