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Low-income populations throughout the world often consume very few calories. At the time of this intervention in 2013, over 800 million people globally consumed fewer calories than were recommended to maintain a healthy weight. However, the impact of low caloric intake on economic productivity is...

Training teachers to improve teacher quality and student learning is a common strategy taken by policymakers. In Nepal, researchers conducted a randomized evaluation of a government teacher training program for math and science teachers to evaluate the impact on student learning in secondary schools...

Researchers conducted an evaluation to test the impact of offering a high-amenity diagnostic consultation for cataracts at different prices on uptake of an underutilized service—cataract surgery—in Mexico. Lower prices for the high-amenity consultation increased exposure to amenities, which...

Researchers provided small one-time grants to microenterprises in Sri Lanka to measure the impact of the additional capital on business profits two and five years later. They found that cash and in-kind grants increased business profits for male owners in the short and long term, but did not lead to...

Researchers evaluated how different ways of asking questions in surveys affect workers’ likelihood of reporting harassment at a firm in Bangladesh. A survey technique that gave people plausible deniability led to workers reporting more abuses, allowing the firm to access more accurate data on the...

By running a Facebook public health campaign, researchers found that social media messaging from doctors and nurses reduced holiday travel and subsequent Covid-19 infection rates. This suggests that social media campaigns may be an impactful and cost-effective way to slow the spread of Covid-19 and...

In urban India, researchers are testing whether helping women and men start STEM careers through a job training program improves their employment and earnings, and, for women, enhances economic empowerment and shapes family planning choices.