A large literature has been concerned with the impacts of recent welfare reforms on income, earnings, transfers, and labor-force attachment. While one strand of this literature relies on observational studies conducted with large survey-sample data sets, a second makes use of data generated by...

Labor supply theory predicts systematic heterogeneity in the impact of recent welfare reforms on earnings, transfers, and income. Yet most welfare reform research focuses on mean impacts. We investigate the importance of heterogeneity using random-assignment data from Connecticut's Jobs First...

The goal of the 1996 Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA) was to end the dependency of needy parents on government benefits, in part by promoting marriage; the pre-reform welfare system was widely believed to discourage marriage because it primarily provided...

In this paper we propose a variance estimator for the OLS estimator as well as for nonlinear estimators such as logit, probit and GMM. This variance estimator enables cluster-robust inference when there is two-way or multi-way clustering that is non-nested. The variance estimator extends the...

In an effort to increase the use of prenatal care by pregnant women and the utilization of medical care by children, eligibility for Medicaid was expanded dramatically for pregnant women and children during the 1980s and early 1990s. By lowering the costs of prenatal care, delivery, and child...

Microeconometrics researchers have increasingly realized the essential need to account for any within-group dependence in estimating standard errors of regression parameter estimates. The typical preferred solution is to calculate cluster-robust or sandwich standard errors that permit quite...

This paper provides an empirical evaluation of true state dependence in welfare participation using unique administrative data from California that is measured at the monthly frequency, which coincides with the welfare eligibility period and so is free of time aggregation bias. The analysis uses...

Twenty-two million families currently receive a total of $34 billion dollars in benefits from the Earned Income Tax Credit (EITC). In fact, the EITC is the largest cash transfer program for lower-income families at the federal level. An unusual feature of the credit is its explicit goal to use...