National Institutes of Health (NIH)/Journal of the International Neuropsychological Society
The first findings from the NIH’s large MRI Study of Normal Brain Development – the largest and most representative to date – provide new norms for cognition among healthy, school-age children. Researchers using Magnetic Resonance Imaging (MRI) since 1999 to document structural brain development and behavior in youth from birth to adulthood have concluded:
• Sex predicts few aspects of cognitive function, and most differences disappear by adolescence.
• Income predicts IQ and academic achievement.
• Age predicts performance on every measure of cognitive function. Free. 18 pages. http://www.journals.cambridge.org.