Structural brain variation and general intelligence.

  title={Structural brain variation and general intelligence.},
  author={Richard J. Haier and Rex E. Jung and Ronald A. Yeo and Kevin Head and Michael T. Alkire},
  volume={23 1},
Total brain volume accounts for about 16% of the variance in general intelligence scores (IQ), but how volumes of specific regions-of-interest (ROIs) relate to IQ is not known. We used voxel-based morphometry (VBM) in two independent samples to identify substantial gray matter (GM) correlates of IQ. Based on statistical conjunction of both samples (N = 47; P < 0.05 corrected for multiple comparisons), more gray matter is associated with higher IQ in discrete Brodmann areas (BA) including… CONTINUE READING
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