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J. Intell. 2017, 5(2), 24; doi:10.3390/jintelligence5020024

Binet’s Error: Developmental Change and Individual Differences in Intelligence Are Related to Different Mechanisms

School of Psychology & Exercise Science, Murdoch University, Murdoch 6150, Australia
Academic Editors: Andreas Demetriou and George Spanoudis
Received: 23 February 2017 / Revised: 26 May 2017 / Accepted: 30 May 2017 / Published: 9 June 2017
(This article belongs to the Special Issue Cognitive Development and Intelligence)
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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. View Full-Text
Keywords: IQ; mental age; cognitive mechanisms; speed of processing; executive functions; electroencephalogram (EEG) alpha; EEG theta IQ; mental age; cognitive mechanisms; speed of processing; executive functions; electroencephalogram (EEG) alpha; EEG theta
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Anderson, M. Binet’s Error: Developmental Change and Individual Differences in Intelligence Are Related to Different Mechanisms. J. Intell. 2017, 5, 24.

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