A remarkable data set on the developing brain adds to the idea that IQ is a meaningful concept in neuroscience, according to researchers. That performance in IQ tests is associated with changes in the brain during adolescence, is suggested by the study published on page 676 of this issue.
IQ in a valid measure of intelligence tends to attract angry responses. This has been claimed in part because of studies that have attempted to link group differences in IQ with race.
The latest result links IQ with changes in the brain over time, rather than fixed attributes such as brain size. This is found by a team led by Philip Shaw at the National Institute of Mental Health in Bethesda, Maryland.
Shaw says, “It’s not that brainy children have more grey matter… The story of intelligence is in the trajectory of brain development.”
Via: Nature