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Nat Rev Neurosci. 2010 Mar;11(3):201-11. doi: 10.1038/nrn2793. Epub 2010 Feb 10.

The neuroscience of human intelligence differences.

Author information

1
Centre for Cognitive Ageing and Cognitive Epidemiology, Department of Psychology, University of Edinburgh, Edinburgh, Scotland, UK. i.deary@ed.ac.uk

Abstract

Neuroscience is contributing to an understanding of the biological bases of human intelligence differences. This work is principally being conducted along two empirical fronts: genetics--quantitative and molecular--and brain imaging. Quantitative genetic studies have established that there are additive genetic contributions to different aspects of cognitive ability--especially general intelligence--and how they change through the lifespan. Molecular genetic studies have yet to identify reliably reproducible contributions from individual genes. Structural and functional brain-imaging studies have identified differences in brain pathways, especially parieto-frontal pathways, that contribute to intelligence differences. There is also evidence that brain efficiency correlates positively with intelligence.

PMID:
20145623
DOI:
10.1038/nrn2793
[Indexed for MEDLINE]

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