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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
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Little, Todd D.; Widaman, Keith F. – Intelligence, 1990
The analysis or modeling of Piagetian and psychometric measures of mental ability is discussed. An application of structural modeling procedures allowing the testing of hypotheses in this domain is presented. Such a model is illustrated through a study of numerical functional relations tasks with 77 elementary school students. (SLD)
Descriptors: Cognitive Development, Elementary Education, Elementary School Students, Hypothesis Testing