From three All-Stars (Fryer, Levitt and List):
This intervention had large and statistically significant positive impacts on both cognitive and non-cognitive test
scores of Hispanics and Whites, but no impact on Blacks
Children with above median (pre-treatment) non cognitive scores accrue the most benefits from treatment.
In other work, it seems that government R&D subsidies are very effective in New Zealand.
In other work, some evidence for the sketchy behavior of established real estate agencies.