The very poor in developing countries often make intertemporal choices that seem at odds with their individual self-interest. There are many possible reasons why. We investigate several of these reasons with a lab-in-the-field experiment in rural Malawi involving large stakes. We make two...

We report the results of a randomized field experiment that examines the credit market impacts of improvements in a lender's ability to determine borrowers' identities. Improved personal identification enhances the credibility of a lender's dynamic repayment incentives by allowing it to withhold...

Peer referrals are a common strategy for addressing asymmetric information in contexts such as the labor market. They could be especially valuable for increasing testing and treatment of infectious diseases, where peers may have advantages over health workers in both identifying new patients and...

We study whether and how peer referrals increase screening, testing, and identification of patients with tuberculosis, an infectious disease responsible for over one million deaths annually. In an experiment with 3,176 patients at 122 tuberculosis treatment centers in India, we find that small...

When offered a choice between two savings accounts, prior account holders are significantly less likely to switch to a cheaper account, compared with new subjects without a prior account. While 49 percent of account holders retained their original, expensive accounts, none of the new subjects...

Financial products and transfer schemes are often designed to help individuals improve welfare by following through on intertemporal plans. This paper implements an artefactual field experiment in Malawi to test the ability of households to manage a cash windfall. This study varies whether 474...

Labor-intensive public works programs are important social protection tools in low-income settings, intended to supplement income of poor households and improve public infrastructure. In this evaluation of the Malawi Social Action Fund, an at-scale, government-operated program, across- and...

The very poor in developing countries often make intertemporal choices that seem at odds with their individual self-interest. There are many possible reasons why. This paper investigates several of these reasons with a lab-in-the-field experiment in rural Malawi involving large stakes. It makes...

This paper reports the results of a field experiment that randomly assigned smallholder cash crop farmers formal savings accounts. In collaboration with a microfinance institution in Malawi, the authors tested two primary treatments, offering either: 1) "ordinary" accounts, or 2) both ordinary...

This paper draws lessons from an original randomized experiment in Malawi. In order to understand why roads in relatively good condition in rural areas may not be used by buses, a minibus service was subsidized over a six-month period over a distance of 20 kilometers to serve five villages....