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Search our database of 924 randomized evaluations conducted by our affiliates in 81 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

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Female street vendor in Managua, Nicaragua

Finance, Health

Extending Health Insurance to the Informal Sector Through Microfinance in Nicaragua

Erica Field, Rebecca Thornton , Laurel Hatt, Mursaleena Islam, Freddy Solis Diaz, Martha Gonzalez Monada, Anne Fitzpatrick

This evaluation measured the determinants of insurance enrollment as well as the impacts of having insurance for informal sector workers by randomly varying the costs and convenience of signing up for a government health insurance program available to formal and informal sector workers in Nicaragua. Overall, take-up of the insurance and retention rates were low, and enrolling in the program did...

Résumés were randomly assigned black- or white-sounding names. Researchers examined the impact of the name on callbacks.

Labor Markets

Discrimination in the Job Market in the United States

Researchers examined the level of racial discrimination in the United States labor market by randomly assigning identical résumés black-sounding or white-sounding names and observing the impact on requests for interviews from employers. Results found that résumés with white-sounding names received 50 percent more callbacks than those with black names, indicating that, all other things being equal...


Information and Social Interaction in Savings Decisions in the United States

Esther Duflo , Emmanuel Saez

This evaluation studied the influence of information and social networks on university employees' decisions to enroll in a voluntary Tax Deferred Account (TDA) retirement plan in the United States. The results indicated that an individual’s decision to participate in the TDA is affected by small changes in their environment (i.e. in their social network), and not only by receiving increased...

Education, Health

Peer Effects, Alcohol, and College Roommates in the United States

Male college students are significantly influenced by their dorm roommate’s drinking behavior in the United States.

Education, Crime, Violence, & Conflict

Peer Effects, Diversity, and College Roommates in the United States

Dan Levy, Michael Kremer , Johanne Boisjoly, Greg Duncan, Jacque Eccles

College students in the United States become more empathetic towards the social groups to which their roommates belong.


Saving Incentives for Low and Middle Income Families: Evidence From a Field Experiment with HR Block

Esther Duflo, Jeffrey Liebman , William Gale, Peter Orszag, Emmanuel Saez

Researchers tested the influence of the (randomly chosen) rate at which clients were told contributions to their Individual Retirement Arrangements (IRAs) would be matched on the amount contributed to their retirement savings accounts. They found higher matching rates significantly increased IRA participation and contributions.