After four years of payments, children whose parents received $333 a month from the experiment fared no better than similar children without that help, the study found. They were no more likely to develop language skills, avoid behavioral problems or developmental delays, demonstrate executive function or exhibit brain activity associated with cognitive development.
Children in the families getting the higher cash payments did no better on tests of vocabulary, executive function, pre-literacy skills or spatial perception. Their mothers did not rank them more highly on assessments of social and emotional behavior. And they were no more likely than the children in the low-cash group to avoid chronic health conditions like asthma.
Source: New York Times