The past thirty years have seen a dramatic decrease in the rate of income convergence across U.S. states. This decline coincides with a similarly substantial decrease in population flows to wealthy states. We develop a model where labor mobility plays a central role in convergence and can...

The Regression Kink (RK) design is an increasingly popular empirical method, with more than 20 studies circulated using RK in the last 5 years since the initial circulation of Card, Lee, Pei and Weber (2012). We document empirically that these estimates, which typically use local linear...

The past thirty years have seen a dramatic decrease in the rate of income convergence across U.S. states. This decline coincides with a similarly substantial decrease in population flows to wealthy states. We develop a model where labor mobility plays a central role in convergence and can...

Approximately 1-in-7 people and 1-in-4 children received benefits from the US Supplemental Nutrition Assistance Program (SNAP) in July 2011, both all-time highs. We analyze changes in SNAP take-up over the past two decades. From 1994 to 2001, coincident with welfare reform, take-up fell from 75%...

Approximately 1-in-7 people and 1-in-4 children received benefits from the US Supplemental Nutrition Assistance Program (SNAP) in July 2011, both all-time highs. We analyze changes in SNAP take-up over the past two decades. From 1994 to 2001, coincident with welfare reform, take-up fell from 75%...

The Regression Kink (RK) design is an increasingly popular empirical method for causal inference. Analogous to the Regression Discontinuity design, which evaluates discontinuous changes in the level of an outcome variable with respect to the running variable at a point at which the level of a...

Due to betrayal aversion, people take risks less willingly when the agent of uncertainty is another person rather than nature. Individuals in four countries (Brazil, Switzerland, the United Arab Emirates and the United States) confronted either a binary-choice trust game or a risky decision...

Norms of reciprocity contribute to the enforcement of cooperative agreements in bilateral sequential exchange. This paper examines the norms that apply in a reciprocal-exchange economy and what effect on trust, trustworthiness and efficiency they have. In our one-shot investment game experiments...

Objective Guide policy-makers in prioritizing safe motherhood interventions.Methods Three models (LOW, MED, HIGH) were constructed based on 34 sub-Saharan African countries to assess the relative cost-effectiveness of available safe motherhood interventions. Cost and effectiveness data were...