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Type: Journal article
Title: Relationship between intelligence and the size and composition of the corpus callosum
Author: Hutchinson, A.
Mathias, J.
Jacobson, B.
Ruzic, L.
Bond, A.
Banich, M.
Citation: Experimental Brain Research, 2009; 192(3):455-464
Publisher: Springer
Issue Date: 2009
ISSN: 0014-4819
Statement of
Amanda D. Hutchinson, J. L. Mathias, B. L. Jacobson, L. Ruzic, A. N. Bond, Marie T. Banich
Abstract: We investigated the relationship between the morphology of the corpus callosum (CC) and IQ in a healthy sample of individuals in their late teens and early twenties. The relationship between the area of the CC, measured at the midline, and IQ showed regional differences. We observed that a higher estimated performance IQ was associated with smaller area in the posterior regions of the CC, a finding that differs from a positive association previously observed in a somewhat older adult sample. In contrast, higher estimated verbal IQ was associated with decreased fractional anisotropy of the genu, an anterior portion of the CC. Age effects were also observed such that older age was associated with larger CC area. Our results suggest that CC morphology is related to cognitive performance, which may have implications for clinical populations in whom CC morphology is atypical.
Keywords: Corpus callosum; Intelligence; Age; Gender differences; DTI
RMID: 0020083889
DOI: 10.1007/s00221-008-1604-5
Appears in Collections:Psychology publications

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