This paper extends the classic two-armed bandit problem to a many-agent setting in which I players each face the same experimentation problem. The main change from the single- agent problem is that an agent can now learn from the current experimentation of other agents. Information is therefore...

Although fake online customer reviews have become prevalent on platforms such as Amazon, Google, and Facebook, little is known about how these reviews influence consumer behavior. This paper provides the first experimental estimates of the effects of fake reviews on individual demand and...

Coal heating in residential homes is an important source of indoor air pollution, leading to detrimental health effects. We conduct a randomized field experiment in northern China using three types of SMS campaigns targeting three potential biases that may hinder the adoption of electric...