Men and women appear to employ different brain organization to achieve the same level of general intelligence.
Brain imaging has revealed that men have more gray matter related to intellectual ability while women have more white matter.
Gray matter refers to information processing centers while white matter refers to connections between the processing centers.
Men have about 6.5 times as much general intelligence gray matter as women while women have about 10 times as much white matter, report researchers from the University of California, Irvine and the University of New Mexico.
"These findings suggest that human evolution has created two different types of brains designed for equally intelligent behavior," says researcher Richard Haier of the University of California, Irvine. "In addition, by pinpointing these gender-based intelligence areas, the study has the potential to aid research on dementia and other cognitive-impairment diseases in the brain."
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