In 2002 more than 18 million low-income individual taxpayers received the Earned Income Tax Credit (EITC). Despite its size, non-participation in this program is a concern and substantial effort is devoted by the IRS, local governments and many non-profits to address it. Most of the tax returns...

When students are tracked into vocational and academic secondary schools, access to higher education is usually restricted to those who completed an academic track. Postponing such tracking may increase university attendance among disadvantaged students if additional time in school enables them...

This paper: i) estimates the effect that going to a better school has on students' academic achievement, and ii) explores whether this intervention induces behavioral responses on the part of children, their parents, and the school system. For the first task, we exploit almost 2,000 regression...

This paper examines a schooling expansion in Romania which increased educational attainment for successive cohorts born between 1945 and 1950. We use a regression discontinuity design at the day level based on school entry cutoff dates to estimate impacts on mortality with 1994-2016 Vital...

This paper explores how parental information and control can influence children's internet use in Chile. We designed and implemented a set of randomized interventions whereby approximately 7700 parents were sent weekly SMSs messages with (i) specific information about their children's internet...

This paper examines the relative benefits of general education and vocational training in Romania, a country which experienced major technological and institutional change during its transition from Communism to a market economy. To avoid the bias caused by non-random selection, we exploit a...

In the Anglo-American constitutional tradition, judicial checks and balances are often seen as crucial guarantees of freedom. Hayek (1960) distinguishes two ways in which the judiciary provides such checks and balances: judicial independence and constitutional review. We create a new data base...

The 1966 abolition and 1989 legalization of abortion in Romania immediately doubled and decreased by about a third the number of births per month, respectively. To isolate the link between abortion access and crime while abstracting from cohort and general equilibrium effects, we compare birth...

We investigate whether local average treatment effects (LATE's) can be extrapolated to new settings. We extend the analysis and framework of Dehejia, Pop-Eleches, and Samii (2015), which examines the external validity of the Angrist-Evans (1998) reduced-form natural experiment of having two...

We study issues related to external validity for treatment effects using over 100 replications of the Angrist and Evans (1998) natural experiment on the effects of sibling sex composition on fertility and labor supply. The replications are based on census data from around the world going back to...