When individuals trade with strangers, there is a temptation to renege on agreements. If repeated interaction or exogenous enforcement are unavailable, societies often solve this problem via institutions that rely on group, rather than individual, reputation. Groups can employ two mechanisms to...

We conduct a randomized controlled trial in 180 villages in Uttar Pradesh, India, to promote the adoption of a saving commitment product new to our study population. A random set of participants are targeted by our promotional campaign. We test whether the diffusion of the product among...