We conduct a randomised controlled trial of an online course in mindfulness. Previous research has found evidence that mindfulness reduces stress; however, few studies have been carried out on non-clinical populations that have not self-selected into or paid for treatment. Our sample consists of 139 students with no pre-existing medical conditions and no prior information on the experiment and treatments. Half of them are asked to follow a four-week mindfulness training, while the other half are asked to watch a fourweek series of historical documentaries.

In order to understand the extent of the information barrier to adoption of a household technology, we designed a randomized controlled trial on willingness to pay (WTP) for solar lanterns in India. We gave high quality solar lanterns to randomly selected `seed' households in a non-electri ed region of the state of Uttar Pradesh. Three friends of the seed household were randomly assigned to one of the following three groups: control, passive learning and incentivized communication. We elicit WTP from the control group when the seed receives the solar lantern.