Abstract
This paper is a comparatively small-scale replication of a paper by DeFries, Corley, Johnson, Vandenberg, & Wilson (1982), using that subset of the DeFries subject group that was administered the Wechsler Adult Intelligence Scale (WAIS) and comparing parent vs. offspring performance of Americans of European and of Japanese Ancestry. Like DeFries et al., significant ethnic group-by-generation interactions were obtained in WAIS scores, suggesting the existence of substantial cultural influences on cognitive-test performance.
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