Search our database of 1030 randomized evaluations conducted by our affiliates in 88 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

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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 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...

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...

Books or Laptops? The Cost-Effectiveness of Shifting from Printed to Digital Delivery of Educational Content in Honduras

Rosangela Bando
Dario Romero Fonseca

Researchers partnered with the Honduran government to evaluate the impact of replacing textbooks with laptops on student learning. Using laptops resulted in no change in learning outcomes, suggesting that laptops could be a cost-effective substitute to textbooks if they can replace enough textbooks.

Savings Accounts to Smooth Consumption for Low-Income Microentrepreneurs in Chile

Felipe Kast

Researchers examined the effects of free savings account access on savings account use, indebtedness, consumption, and well-being. Easy access to savings accounts reduced participants’ reliance on borrowing, helped them manage fluctuations in income, and increased their self-reported well-being.