What if we could draw a line from key areas of a low-income child’s brain to a policy intervention that would dramatically reduce his or her chances of staying in poverty, dropping out of school and entering the criminal justice or social welfare system? Wouldn’t we want to make that policy prescription as widely available as any vaccination against childhood disease?
Thanks to remarkable advances in neuroscience and the social sciences, we are closing in on this possibility.
In a study published this year in Nature Neuroscience, several co-authors and I found that family income is significantly correlated with children’s brain size — specifically, the surface area of the cerebral cortex, which is the outer layer of the brain that does most of the cognitive heavy lifting. Further, we found that increases in income were associated with the greatest increases in brain surface area among the poorest children.
– The Washington Post