Knowledge sharing is common on the Internet. In this paper, we study the effect of introducing monetary incentives for hosting live talks on users' contribution to non-rewarded activity of answering questions on the same online question-and-answer platform. Using a combination of coarsened exact...

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...