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Direct linkLynn, Richard – Intelligence, 2010
Regional differences in IQ are presented for 12 regions of Italy showing that IQs are highest in the north and lowest in the south. Regional IQs obtained in 2006 are highly correlated with average incomes at r = 0.937, and with stature, infant mortality, literacy and education. The lower IQ in southern Italy may be attributable to genetic…
Descriptors: Infant Mortality, Intelligence Quotient, Literacy, Educational Attainment
Johnson, Wendy; Bouchard, Thomas J., Jr. – Intelligence, 2007
Empirical data suggest that there is at most a very small sex difference in general mental ability, but men clearly perform better on visuospatial tasks while women clearly perform better on tests of verbal usage and perceptual speed. In this study, we integrated these overall findings with predictions based on the Verbal-Perceptual-Rotation (VPR)…
Descriptors: Gender Differences, Cognitive Ability, Visual Perception, Verbal Ability
