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Researchers examined results of a school admissions lottery to measure the impact of charter school education on students after six years. They found that offering a charter education resulted in improved test scores, higher college enrollment, a reduction in specific risky behaviors, and no...

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.

In this randomized evaluation in Zimbabwe, researchers studied how social media messages targeting misinformation can affect people’s beliefs about and responses toward Covid-19. The study found that these messages increased participants’ knowledge of Covid-19 information by 7 percentage points and...

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 measure the impact of an information program on parental school choice and long-term student achievement. They found that the intervention shifted household school choices of those who were not enrolled before the intervention toward establishments...