期刊
INTELLIGENCE
卷 34, 期 6, 页码 561-570出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.intell.2006.03.006
关键词
IQ; general intelligence; g; correlated vectors; voxel-based morphometry; gray matter
It is unclear whether brain mechanisms underlying human intelligence are distributed throughout the brain or mainly concentrated in the frontal lobes. Data are inconsistent possibly due, at least in part, to the different ways the construct of intelligence is measured. Here we apply the method of correlated vectors to determine how the general factor of intelligence (g) is related to regional gray matter and white matter volumes. This is a re-analysis of an earlier study showing regional gray matter and white matter volume is correlated to Full Scale IQ (FSIQ). However, it is well-known that FSIQ taps several cognitive abilities and skills in addition to g. The results now show that the g factor accounts for several but not all FSIQ/gray matter correlations distributed throughout the brain and these areas may differ for young and older adults. (c) 2006 Elsevier Inc. All rights reserved.
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