How do borrowers respond to improvements in a lender's ability to punish defaulters? This paper reports the results of a randomized field experiment in rural Malawi that examines the impact of fingerprinting borrowers in a context where a unique identification system is absent. Fingerprinting...

Poor people in developing countries can benefit from saving to take advantage of profitable investment opportunities, to smooth consumption when income is uneven and unpredictable, and to insure against emergencies. Despite the benefits of saving, only 41% of adults in developing countries have...

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...