The world's poor are seeing a rapid expansion in access to formal savings accounts. What is the source of savings when households are connected to a formal account? We combine a high-frequency panel survey spanning two and a half years with an experiment in which a Sri Lankan bank used mobile...

In developing economies, mobile-linked services have the potential to significantly reduce transaction costs and provide a truly new conduit that could be used to facilitate the flow of savings into banks. We test this premise by introducing a product that permits Sri Lankan households to...

The majority of enterprises in developing countries have no paid workers. Is this optimal, or the result of frictions in labor markets? We conduct an experiment providing wage subsidies to randomly chosen microenterprises in Sri Lanka. In the presence of frictions, a short-term subsidy could...

We conduct a field experiment in Sri Lanka providing informal firms incentives to formalize. Information about the registration process and reimbursement of direct costs has no effect. Payments equivalent to one-half to one month (alternatively, 2 months) of the median firm's profits leads to...

Public sector absenteeism undermines service delivery in many developing countries. We report results from an at-scale randomized control evaluation in Punjab, Pakistan of a reform designed to address this problem. The reform affects healthcare for 100 million citizens across 297 political...

We evaluate a program in Pakistan that equips government health inspectors with a smartphone app which channels data on rural clinics to senior policy makers. The system led to rural clinics being inspected 104% more often after 6 months, but only 43.8% more often after a year, with the latter...

International development agencies invest heavily in institution building in fragile states, including expensive interventions to support democratic elections. Yet little evidence exists on whether elections enhance the domestic legitimacy of governments. Using the random assignment of an...

We use estimates of time preferences to customize incentives for polio vaccinators in Lahore, Pakistan. We measure time preferences using intertemporal allocations of effort, and derive the mapping between these estimates and individually optimized incentives. We evaluate the effect of matching...

This paper provides evidence that the personalities of policymakers matter for policy. Three results support the relevance of personalities for policy. First, doctors with higher Big Five and Perry Public Sector Motivation scores attend work more and falsify inspection reports less. Second,...

From the 1970s to the early 2000s, the United States experienced an epochal wave of low-skilled immigration. Since the Great Recession, however, U.S. borders have become a far less active place when it comes to the net arrival of foreign workers. The number of undocumented immigrants has...