02/17/2022
In this study, 1,000 low-income mothers of newborns received a cash gift for the first several years of their children’s lives. The size of the gift was randomly chosen to be either $333 or $20 per month. The mothers could spend the money in ways that made the most sense to them, with no strings attached.
The ongoing trial is led by Drs. Kimberly Noble of Teachers College, Columbia University, Katherine Magnuson of the University of Wisconsin, Madison, and Greg Duncan of the University of California, Irvine. It is supported in part by NIH’s Eunice Kennedy Shriver National Institute of Child Health and Human Development. The first results from the trial appeared in the February 1, 2022, issue of Proceedings of the National Academy of Sciences.
The team recorded resting brain activity in 435 of the infants at 1 year of age. They found that infants in the high-cash group showed greater high-frequency activity than those in the low-cash group, particularly in frontal and central brain regions. The effect of the payments on brain activity was similar in size to that seen in successful interventions such as class size reductions.
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Cash transfers to low-income mothers led to changes in their infants' brain activity.