We present evidence on the impact on students' math and reading scores of one of the largest deployments of an OLPC program and the only one implemented at a national scale: Plan Ceibal in Uruguay. We have unique data that allow us to know the exact date of laptop delivery for every student in...

We present evidence on the impact on students' math and reading scores of one of the largest deployments of an OLPC program and the only one implemented at a national scale: Plan Ceibal in Uruguay. Unlike previous work in the field, we have unique data that allow us to know the exact date of...

In this paper we propose an estimator for models in which an endogenous dichotomous treatment affects a count outcome in the presence of either sample selection or endogenous participation using maximum simulated likelihood. We allow for the treatment to have an effect on both the sample...

We focus on the effect of English deficiency on the native-immigrant wage gap for male employees in the UK using the first wave of the UK Household Longitudinal Survey. We show that the wage gap is robust to controls for age, region of residence, educational attainment and ethnicity. However,...

We investigate the extent to which deficiency at English as measured by English as Additional Language (EAL), contribute to the immigrant-native wage gap for female employees in the UK, controlling for covariates. To deal with the endogeneity of EAL and a substantial problem of self-selection...

Historically, improvements in the quality of municipal drinking water made important contributions to mortality decline in wealthy countries. However, water disinfection often does not produce equivalent benefits in developing countries today. We investigate this puzzle by analyzing an abrupt,...

Historically, improvements in municipal water quality reduced mortality substantially in wealthy countries. However, water disinfection has not produced equivalent benefits in developing countries today. We investigate this puzzle by analyzing a large-scale municipal water disinfection program...

Historically, improvements in the quality of municipal drinking water made important contributions to mortality decline in wealthy countries. However, water disinfection has not produced equivalent benefits in developing countries today. We investigate this puzzle by analyzing a large-scale...

War can have long-lasting effects on individual mental health through war trauma. In this paper, we explore the impact of constantly recalling painful episodes related to the 1992-1995 Bosnia and Herzegovina conflict on individual mental health in 2001 using the Center for Epidemiologic Studies...