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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.

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.

Researchers conducted a randomized evaluation among households in rural Burkina Faso to examine whether countries in sub-Saharan Africa are experiencing a slower shift in fertility levels due to lack of access to contraception or households wanting large families. Providing married women with access...

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.

Researchers conducted a randomized evaluation to test the impact of unconditional cash transfers, a psychotherapy program, and their combination on psychological and economic well-being in rural Kenya.

Researchers and the Ministry of Education evalauted at scale two low-cost ways of providing relevant information to help students and their families make more informed decisions. Results suggest that the programs were effective at changing educational plans and lowering dropout rates, while...

Researchers conducted a randomized evaluation of Check & Connect (C&C), a school-based mentoring program, to evaluate its impact on school attendance and academic outcomes. For students who began the program in grades 5-7, the program decreased student absences and caused participating students to...