We consider statistical inference for regression when data are grouped into clusters, with
regression model errors independent across clusters but correlated within clusters …

A regression discontinuity (RD) research design is appropriate for program evaluation
problems in which treatment status (or the probability of treatment) depends on whether an …

Immigration increased Israel's population by 12 percent between 1990 and 1994, after
emigration restrictions were lifted in an unstable Soviet Union. Following the influx …

There are several theoretical reasons why globalization will have a narrowing as well as a
widening effect on the gender wage gap, but little is known about the actual impact, except …

In this survey we consider regression analysis when observations are grouped in clusters,
with independence across clusters but correlation within clusters. We consider this in …

In this paper we estimate the effect of actual class size on student achievement. Once we
address the endogeneity induced by the correlation between class size and the “ability” of …

In this paper we introduce a way to systematically organize the choice between different
forms of compensation based upon observable job characteristics. Secondly, we explore the …

Despite considerable research, there is little consensus about the impact of Medicaid
eligibility expansions for low-income children. In this paper, I reexamine the expansions …

Colombia has aggressively pursued forced coca eradication to reduce the amount of land
that agricultural households devote to illegal crops. However, few rigorous empirical studies …

There is increasing evidence that early childhood health interventions have long-term effects
on cognitive development, educational achievement and adult productivity. We examine the …