Uptake of safe water products remains low, in spite of modest cost. We experimented with a sales offer that combined a free trial and rent-to-own payments for durable filters. Purchase rates doubled under this sales offer to 31% compared to a traditional lump-sum sales contract. To lower...

Patients rely on medical care providers to act in their best interests because providers understand disease pathology and appropriate treatment much better than patients. Providers, however, not only give advice (diagnose) but also deliver (sell) treatments based on that advice. This creates a...

"We combine data from a field experiment and a laboratory experiment to measure the causal impact of human capital on respect for earned property rights, a component of social preferences with important implications for economic growth and development. We find that higher academic achievement...