Evaluations

Researchers tested whether an informative letter campaign could reduce inappropriate prescribing of controlled substances in Medicare Part D. Letters had no detectable effect on prescribing. In ongoing work, researchers are testing alternative versions of letters.

Researchers conducted a randomized evaluation to test how encouraging traditional leaders to broaden their circle of advisors affects inclusive governance in Zimbabwe. Village chiefs improved their decision-making processes when they attended the workshop on inclusive and transparent governance and...

Researchers evaluated the impact impact of both general exposure to mass media and an intensive family planning campaign on contraception. Increasing exposure to general mass media reduced contraception use in this context. However, a high-quality family planning radio campaign offset the negative...

In India, researchers evaluated the impact of the first emissions trading scheme for particulate matter on air quality, industry compliance costs, and industry profits. Compliance with the market was high, and participating firms substantially reduced their particulate matter emissions without large...

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.

In the Philippines, researchers conducted a randomized evaluation to measure the impact of an evangelical Protestant religious values and theology education program on individuals' economic and subjective wellbeing.

Researchers conducted a randomized evaluation to assess employer discrimination by randomizing applicants' self-described gender and marital status on resumes submitted to prospective employers.

Researchers evaluated the impact of exposure to and incentives to consume discordant media on political attitudes and behaviors in Turkey. Participants changed their media consumption habits, trusted discordant media sources more, and had less polarized attitudes towards the government, but did not...