This paper calculates monthly time series for the overall safety net's statutory marginal labor income tax rate as a function of skill and marital status. Marginal tax rates increased significantly for all groups between 2007 and 2009, and dramatically so for unmarried household heads. The...

Conditional Cash Transfers (CCTs) have been shown to increase human capital investments, but their standard features make them expensive. We use a large randomized experiment in Morocco to estimate an alternative government-run program, a "labeled cash transfer" (LCT): a small cash transfer made...

We propose a social choice rule for aggregating preferences elicited from surveys into a marginal adjustment of policy from the status quo. The mechanism is: (i) symmetric in its treatment of survey respondents; (ii) ordinal, using only the orientation of respondents' indifference surfaces;...

We estimate the long-run impact of cash transfers to poor families on children's longevity, educational attainment, nutritional status, and income in adulthood. To do so, we collected individual-level administrative records of applicants to the Mothers' Pension program--the first...

Measured in percentage points, the Affordable Care Act will, by 2015, add about fourteen times more to average marginal labor income tax rates nationwide than the Massachusetts health reform added to average rates in Massachusetts following its 2006 statewide health reform. The rate impacts are...

This study provides the first comprehensive analysis of the distributional effects of Head Start, using the first national randomized experiment of the Head Start program (the Head Start Impact Study). We examine program effects on cognitive and non-cognitive outcomes and explore the...

Anti-poverty programs in developing countries are often difficult to implement; in particular, many governments lack the capacity to deliver payments securely to targeted beneficiaries. We evaluate the impact of biometrically-authenticated payments infrastructure ("Smartcards") on beneficiaries...

In this paper, we assess whether welfare reform affects earnings only through mean impacts that are constant within but vary across subgroups. This is important because researchers interested in treatment effect heterogeneity typically restrict their attention to estimating mean impacts that are...

Economic theory suggests that, when designing aid programs, ordeal mechanisms that impose differential costs for rich and poor can induce self-selection and hence improve targeting ("self-targeting"). We first re-examine this theory and show that ordeal mechanisms may actually have theoretically...

How did we come to think that eliminating poverty is a legitimate goal for public policy? What types of policies have emerged in the hope of attaining that goal? The last 200 years have witnessed a dramatic change in thinking about poverty. Mainstream economic thinking in the 18th century held...