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Brain Network Related to Intelligence Identified by Scientists
The researchers call their theory for the neural basis of intelligence ‘Parieto-Frontal Integration Theory’ (P-FIT). Reported in the online edition of the journal Behaviour and Brain Sciences, it includes peer commentary from 19 researchers.
“Recent neuroscience studies suggest that intelligence is related to how well information travels throughout the brain,” said Haier, a professor of psychology in the School of Medicine and longtime human intelligence researcher.
“Our review of imaging studies identifies the stations along the routes intelligent information processing takes. Once we know where the stations are, we can study how they relate to intelligence,” he added.
The researchers have based their theory on a review of 37 imaging studies, which suggests that some of the brain areas related to intelligence are the same areas that are related to attention and memory, and to more complex functions like language.
Haier and Jung say that this possible integration of cognitive functions suggests that intelligence levels may be based on how efficient the frontal-parietal networks process information. Although there is still discussion about how to define and measure intelligence, Haier and Jung found surprising consistency in the studies they reviewed despite the fact the studies represented a variety of approaches.
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