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Researchers tested whether sharing messages that appealed to negative emotions, like shame or disgust, increased households’ hand washing behavior and willingness to pay for water chlorination in Dhaka, Bangladesh. Negative messaging had no impact on chlorination levels or willingness to pay, but...

Researchers conducted a randomized evaluation in Rwanda to examine how important aspects of cultural practice do or do not change in the wake of exposure to media messages delivered through a radio soap opera drama. While the radio program had little effect on changing individual beliefs and...

Researchers conducted a randomized evaluation to test the impact of a video-mediated extension approach on the uptake of technologies recommended by the Ethiopian Ministry of Agriculture. The video-mediated instruction increased uptake through improved access to extension and farmer knowledge but...

Researchers randomly provided postage-paid envelopes to a subset of permanent absentee voters in San Mateo County, California in order to evaluate its impact on voter turnout. The provision of prepaid postage resulted in no net change in voter turnout because it simultaneously decreased the number...

Kenya, East Africa's largest economy, is struggling with an ageing energy infrastructure and low connectivity to the power grid. William Jack and affiliate Tavneet Suri (MIT) study the impact of off-grid solar power on small retailers in Nairobi.

In partnership with Jacaranda Health, researchers evaluated a family planning program that provided pregnant women with varying combinations of vouchers for free modern contraception and reminders of the importance of family planning. While none of the combinations increased self-reported use of...

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 study, researchers evaluated the impact of a care management program that provides medical and...

Sub-Saharan Africa accounts for 24 percent of the global burden of disease. While private clinics are the first source of care for many Africans, the quality of care offered in private facilities is inconsistent and often weak, and the private healthcare sector faces a wide host of challenges. In...