Evaluations

Researchers conducted a randomized evaluation in Nigeria to determine whether a campaign against electoral violence could spread through social networks to affect the perceptions and behaviors not only of the individuals targeted by the campaign but also others to whom they have social ties. The...

To test this theory, researchers examined results of a housing lottery to measure the impact of relocation on slum residents. They found that offering subsidized suburban housing resulted in neither comprehensive take-up nor higher family income, suggesting that the benefits of improved housing were...

In partnership with the City of Medellín, researchers randomly introduced a program that intensified government outreach to gang-controlled neighborhoods. The study found no evidence that the city’s intervention reduced gang rule.

Traffic is a significant concern in many rapidly developing and urbanizing countries, as it contributes to increased commute times, pollution, and fuel consumption. One solution to this challenge could be ride-sharing to reduce the number of cars on the road. In Malaysia and Singapore, researchers...

Researchers evaluated the impact of a reform to the pollution audit system in India, making auditors more independent, on the truthfulness of their reporting and the behavior of the firms they audited. Increasing their independence made them more likely to report the truth about industrial plants’...