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Researchers evaluated whether participating in the law-making process influenced firms’ compliance with regulations in Vietnam. Firms that participated in the drafting of new regulation had more positive views of the government’s regulatory authority, were more likely to allow auditors to examine...

Researchers evaluated the impact of a US$1,000 monthly unconditional cash transfer to individuals with low incomes for three years on health outcomes including nutrition, sleep, health care access and use, and physical and mental health. Those who received the large cash transfer spent more on...

The researcher used a randomised evaluation in Kenya and Uganda to study the impact of varying access to information about prices in buying and selling markets, and encouraged informal traders to enter new markets and take advantage of price differences.

In Northern Ghana, researchers tested whether providing information could encourage mothers to talk more with their infants, thereby improving child development. Six to eight months after the intervention, mothers who received the information reported they were more likely to talk to their infants...

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.