John Eric Humphries, Christopher Neilson, Xiaoyang Ye, Seth Zimmerman

This paper asks whether universal pre-kindergarten (UPK) programs can increase parental earnings and, if so, how much these gains affect the economic returns to UPK. Using admissions lotteries for an extended-day UPK program in New Haven, Connecticut, we find that UPK enrollment increases childcare coverage to span the workday and raises parents' earnings by 21.7% during pre-kindergarten. Gains persist for at least six years. We find little evidence of effects on children's academic and behavioral outcomes during elementary and middle school. Combining these results, we demonstrate that tax revenues from parents' earnings gains reduce the net government costs of UPK by 90% relative to estimates that ignore gains for parents. Overall, we estimate that each dollar spent yields $10 in benefits. Our findings demonstrate the potential of UPK programs that combine quality education with full-day childcare and underscore the importance of thinking about parents when designing and evaluating early-childhood policies.

John Eric Humphries, Aurelie Ouss, Megan Stevenson, Kamelia Stavreva, Winnie van Dijk

Noncarceral conviction is a common outcome of criminal court cases: for every individual incarcerated, there are approximately three who are recently convicted but not sentenced to prison or jail. We develop an empirical framework for studying the consequences of noncarceral conviction by extending the binary-treatment judge IV framework to settings with multiple treatments. We outline assumptions under which widely-used 2SLS regressions recover margin-specific treatment effects, relate these assumptions to models of judge decision-making, and derive an expression that provides intuition about the direction and magnitude of asymptotic bias when they are not met. Under the identifying assumptions, we find that noncarceral conviction (relative to dismissal) leads to a large and long-lasting increase in recidivism for felony defendants in Virginia. In contrast, incarceration relative to noncarceral conviction leads to a short-run reduction in recidivism, consistent with incapacitation. While the identifying assumptions include a strong restriction on judge decision-making, we argue that any bias resulting from its failure is unlikely to change our qualitative conclusions. Lastly, we introduce an alternative empirical strategy, and find that it yields similar estimates. Collectively, these results suggest that noncarceral felony conviction is an important and potentially overlooked driver of recidivism.

[Accepted at the Quarterly Journal of Economics]