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...

Online platform businesses have thrived and created enormous economic value in recent decades. However, disintermediation, which occurs when platform users bypass the platform to complete transactions directly, has become the Achilles’ heel of the platform business model, hurting platforms'...

In collaboration with three companies selling a diverse set of products, we conducted randomized field experiments in which experimentally tailored email ads were sent to millions of individuals. We found consistently that personalizing the emails by adding consumer-specific information (e.g.,...

We use a field experiment with 3,176 patients at 122 tuberculosis treatment clinics in India to test whether peer referrals increase screening and identification of patients with an infectious disease. Low-cost financial incentives considerably raise the probability that current patients refer...