|Title||Fractionating Human Intelligence|
|Authors||Hampshire, A., Parkin, B., Highfield, R. and Owen, A.M.|
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.
|Journal citation||76 (6), p. 1225–1237|
|Digital Object Identifier (DOI)||doi:10.1016/j.neuron.2012.06.022|
|Published||20 Dec 2012|