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Direct linkGelade, 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
Peer reviewedSmith, Glen A.; Stanley, Gordon – Intelligence, 1987
By comparing the profile of "g" loadings for a set of psychometric test scores, it is shown that general intelligence is related to timed performance measures from perceptual-motor tasks, more strongly on more complex tasks. The profile of the "g" loadings was predictable from the response-time (RT) psychometric test time correlations for four RT…
Descriptors: Intelligence, Perceptual Motor Coordination, Psychometrics, Reaction Time
On the Modeling of Scaled Measurement Sequences: Implications for Analyses of Cognitive Development.
Peer reviewedLittle, 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
