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Binet’s error: Developmental change and individual differences in intelligence are related to different mechanisms

Anderson, M. (2017) Binet’s error: Developmental change and individual differences in intelligence are related to different mechanisms. Journal of Intelligence, 5 (2). p. 24.

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Abstract

In common with most, if not all, papers in this special issue, I will argue that understanding the nature of developmental change and individual differences in intelligence requires a theory of the mechanisms underlying both factors. Insofar as these mechanisms constitute part of the fundamental architecture of cognition, this is also an exercise in unifying the discipline and research on intelligence in both children and adults. However, I argue that a variety of data support a theory suggesting that developmental change is the province of mechanisms commonly regarded as components of executive functioning or cognitive control, whereas individual differences are constrained by the speed of information processing. Perhaps paradoxically, this leads to the conclusion that Binet’s fundamental insight—that children’s increasing ability to solve problems of increasing difficulty could generate a single scale of intelligence—is wrong. Compounding the paradox, this means that mental age and IQ are not simply two different ways of expressing the same thing, but are related to two different dimensions of g itself.

Item Type: Journal Article
Murdoch Affiliation: School of Psychology and Exercise Science
Publisher: MDPI
Copyright: © 2017 by the author. Licensee MDPI, Basel, Switzerland
URI: http://researchrepository.murdoch.edu.au/id/eprint/42208
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