Search our database of 1000 randomized evaluations conducted by our affiliates in 83 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

Displaying 1-8 of 1000

Encouraging Carpooling in Malaysia and Singapore

Ruimin He
Zoe Hitzig
Xin Wei Ngiam

Traffic is a significant concern in many rapidly developing and urbanizing countries, as it contributes to increased commute times, pollution, and fuel consumption. One solution to this challenge could be ride-sharing to reduce the number of cars on the road. In Malaysia and Singapore, researchers...

The Impact of SMS Messages on Financial Inclusion in the Dominican Republic

Aaron Dibner-Dunlap

There is a growing body of evidence on the efficacy of SMS reminders to encourage banking clients to save more. Researchers in the Dominican Republic partnered with savings and credit institution Banco Unión to conduct two randomized evaluations of tailored SMS reminders.

The Role of the VAT for Tax Enforcement

The Value Added Tax (VAT) system, which generates a paper trail on transactions between firms, facilitated tax enforcement by spreading the impact of enforcement measures up the production chain in a study with over 400,000 firms in Chile.

The Impact of Commitment Contracts on Workplace Productivity in India

Self-control problems can lead people to fall short of their personal and professional goals, often resulting in lower than desired workplace productivity. Researchers, in partnership with an Indian data entry firm, conducted a randomized evaluation to test whether self-control problems existed in...

How Does Winning the Lottery Affect Labor Supply? Evidence from Sweden

David Cesarini
Erik Lindqvist
Robert Ostling

Researchers used data on lottery winners in Sweden to determine whether receiving an influx of cash affected the labor supply decisions of winners and their spouses. They found that lottery winners reduced their labor supply, suggesting that cash transfers can have an effect on labor market outcomes...

Reducing Inappropriate Prescribing of Controlled Substances in the United States

David Yokum
Shantanu Agrawal

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.

Improving Electoral Integrity with Information and Communications Technology in Uganda

Clark Gibson
Danielle Jung
James D. Long

Researchers sent letters to polling stations announcing smartphone vote-tally audits to evaluate the impact of audits on electoral irregularities such as non-adherence to transparency regulations and falsified vote tallies. Relative to a comparison group, letters increased the number of polling...

Household Matters: Revisiting the Returns to Capital among Female Micro-entrepreneurs

Arielle Bernhardt
Natalia Rigol

Researchers re-examined data from previous studies in Ghana, India, and Sri Lanka to better understand the impact of credit and cash grant variations on micro-enterprise profits. Their results suggest that the gender gap in micro-enterprise performance was not due to ability, but rather to women’s...