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Researchers partnered with the Government of Pakistan to conduct two parallel randomized evaluations to test the impact of providing supplemental teaching materials on the quality of student learning and teachers’ effectiveness. Overall, the eLearn Classroom intervention improved student achievement...

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.

Working with local government leaders and agricultural extension agents, the researcher is conducting a randomized evaluation to test the impact of promoting a mechanization technology. Uniquely, the researcher will closely track how employment shifts for women who formerly did the mechanized work.

In the United States, many people who are eligible for social and economic benefits do not claim those benefits. Researchers partnered with the U.S. Internal Revenue Service (IRS) to test the effectiveness of different messages to taxpayers designed to encourage them to claim certain tax benefits.

In Nigeria, researchers worked with a financial service provider to evaluate the impact of digital loans on welfare. Being approved for the loans increased subjective well-being after three months, for applicants who normally would have been denied.

In partnership with the Government of Tamil Nadu, researchers evaluated the impact of incentivizing and monitoring walking on exercise and health. Incentives increased walking and improved health, as measured by risk factors for diabetes and by mental health.

In partnership with the Government of Indonesia, researchers conducted a randomized evaluation to compare the efficacy of vouchers versus in-kind transfers in reducing poverty and improving program delivery. The reform led to an increase in assistance received by eligible households, due to improved...