“The newborn brain triples in size between birth and 2 years of age. The long-standing presumption has been that certain activities during this period promote optimal development and that others may hinder it.”
“In this pilot study, we found that distributing blocks was associated with significantly higher language scores in a sample of middle- and low-income children,” the authors write. On average, children who received blocks score 15 percent higher on their language assessment than those who did not. The results suggest that a program that distributes blocks may be effective in promoting development. There was no difference found in attention scores between the two study groups.
Self-reporting is always going to be biased, and of course families which receive toys from the men in white coats will be more likely to report playing with them.