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Direct linkMatzke, Dora; Dolan, Conor V.; Molenaar, Dylan – Intelligence, 2010
In higher order factor models, general intelligence (g) is often found to correlate perfectly with lower-order common factors, suggesting that g and some well-defined cognitive ability, such as working memory, may be identical. However, the results of studies that addressed the equivalence of g and lower-order factors are inconsistent. We suggest…
Descriptors: Intelligence, Statistical Analysis, Correlation, Effect Size
Gelade, Garry A. – Intelligence, 2008
This paper examines the distribution of national IQ in geographical space. When the heritability of IQ and its dependence on eco-social factors are considered from a global perspective, they suggest that the IQs of neighboring countries should be similar. Using previously published IQ data for 113 nations (Lynn, R., & Vanhanen, T., (2006). IQ and…
Descriptors: Global Approach, Intelligence Quotient, Geographic Location, Socioeconomic Influences
