Search our database of 1041 randomized evaluations conducted by our affiliates in 89 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

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Household Water Connections in Tangier, Morocco

Researchers conducted a randomized evaluation to look at the effect of private connections in a setting where most households already had access to high quality water through public taps. They found that households had a high willingness to pay for piped water, and while home water connection had no...

Improving Immunization Coverage Through Incentives, Reminders, and Social Networks in India

Researchers are working with the state government of Haryana to evaluate the impact of three programs aimed at increasing child immunization by building demand for vaccination: the use of small, non-financial incentives, tailored reminders, and leveraging village social networks.

Health Care Hotspotting in the United States

Annetta Zhou
Sarah Taubman

Rapidly rising health care costs in the United States have generated interest in identifying effective ways to improve the quality of care delivery and reduce waste within the health care system. In this ongoing study, researchers are evaluating the impact of a care management program that provides...

Extending Health Insurance to the Informal Sector Through Microfinance in Nicaragua

Laurel Hatt
Mursaleena Islam
Freddy Solis Diaz
Martha Gonzalez Monada
Anne Fitzpatrick

In recent years, there has been an increased interest in providing health insurance to poor and vulnerable populations as a means of increasing access to quality healthcare and protecting families from the substantial costs and subsequent income shocks. This evaluation measured the determinants of...

Enrolling Informal Sector Workers in National Health Insurance in Indonesia

A key challenge to achieving universal health coverage is that non-poor informal workers are difficult to enroll and retain in government health insurance programs. Researchers are conducting a randomized evaluation to test the impact of various incentives and information campaigns on the enrollment...

Contraceptive Adoption, Fertility, and the Family in Zambia

Women who received private access to vouchers for contraceptives were more likely to take up and use contraception, compared to women whose husbands were involved in the voucher program.

Commitment Contracts for Smoking Cessation in the United States

Daren Anderson
Amanda Kowalski
Jody Sindelar
This study will examine whether a combination of positive and negative commitment devices can induce long-term smoking cessation in smokers from a low-to-moderate income background in Connecticut.

The Effect of Behavioral Nudges via Mailed Letters on Subsidized Health Insurance Take-up

Timothy Layton
Keith Ericson
This study will examine the impact of different reminder letters sent by mail (behavioral nudges) on enrollment in subsidized health insurance plans. The study will also examine the characteristics of the marginal enrollees, focusing especially on health risk to assess the extent of adverse...