Fractionating Human Intelligence

Hampshire, A., Parkin, B., Highfield, R. and Owen, A.M. 2012. Fractionating Human Intelligence. Neuron. 76 (6), p. 1225–1237. doi:10.1016/j.neuron.2012.06.022

TitleFractionating Human Intelligence
AuthorsHampshire, A., Parkin, B., Highfield, R. and Owen, A.M.
Abstract

What makes one person more intellectually able than another? Can the entire distribution of human intelligence be accounted for by just one general factor? Is intelligence supported by a single neural system? Here, we provide a perspective on human intelligence that takes into account how general abilities or ‘‘factors’’ reflect the functional organiza- tion of the brain. By comparing factor models of individual differences in performance with factor models of brain functional organization, we demon- strate that different components of intelligence have their analogs in distinct brain networks. Using simulations based on neuroimaging data, we show that the higher-order factor ‘‘g’’ is accounted for by cognitive tasks corecruiting multiple networks. Finally, we confirm the independence of these com- ponents of intelligence by dissociating them using questionnaire variables. We propose that intelli- gence is an emergent property of anatomically distinct cognitive systems, each of which has its own capacity.

JournalNeuron
Journal citation76 (6), p. 1225–1237
ISSN0896-6273
Year2012
PublisherElsevier
Publisher's version
Digital Object Identifier (DOI)doi:10.1016/j.neuron.2012.06.022
Publication dates
Published20 Dec 2012

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