This study reports the findings from a year-long randomized evaluation assessing the impact of assigning 62 classrooms in Nigeria to receive either blocked or interleaved math problem sets. Blocked practice sessions focused on a single skill at a time. Interleaved problem sets alternated between...

It is generally agreed upon that most individuals who acquire a college degree do so in their early 20s. Despite this consensus, we show that in the US from the 1930 birth cohort onwards a large fraction - around 20% - of college graduates obtained their degree after age 30. We explore the...

Recent attention to the causal identification of spending impacts provides improved estimates of spending outcomes in a variety of circumstances, but the estimates are substantially different across studies. Half of the variation in estimated funding impact on test scores and over three-quarters...

Recent research concludes that wage returns to cognitive skills have declined in the U.S. We reassess this finding. Using decomposition methods, we document the pivotal role played by dynamic shifts in the distributions of pre-labor market cognitive skills. Our findings show these shifts explain...

Transitional Kindergarten (TK) is a relatively recent entrant into the U.S. early education landscape, combining features of public pre-K and regular kindergarten. We provide the first estimates of the impact of Michigan's TK program on 3rd grade test scores. Using an augmented regression...

A longstanding and influential view in U.S. correctional policy is that "nothing works" when it comes to rehabilitating incarcerated individuals. We revisit this hypothesis by studying an innovative law-enforcement-led program launched in the county jail of Flint, Michigan: Inmate Growth...

This paper builds a general equilibrium framework with firm and worker heterogeneity, monopsony power, and task-based production to quantify the long-run effects of education, biased demand shocks, and minimum wage. I take it to Brazilian data for 1998 and 2012 and find that (i) supply and...

The dramatic expansion of the education system and the transformation of the economy in China provide an opportunity to investigate how the labor market rewards skills. Between 2007 and 2018, the overall return to cognitive skills is virtually constant at 10%, whereas the college premium drops...