The study adds new insight to a highly controversial question: What is intelligence, and how can we measure it? The research team examined a uniquely large data set of 241 brain-lesion patients who all had taken IQ tests. The researchers mapped the location of each patient's lesion in their brains, and correlated that with each patient's IQ score to produce a map of the brain regions that influence intelligence. The scientists found that, rather than residing in a single structure, general intelligence is determined by a network of regions across both sides of the brain. The researchers say the findings will open the door to further investigations about how the brain, intelligence, and environment all interact.
Intelligence Tracked To Brain Regions
Brain Development and Intelligence Linked, Study Says