Researchers conducted a randomized evaluation to test the impact of different types of labels to signal product quality on sellers’ ability to develop a reputation for consistently selling high-quality watermelons in China. The more expensive laser-cut label influenced sellers to provide higher quality watermelons than the sticker label. The use of the laser-cut label also led to higher sales profits, whereas the cheaper sticker label had no effect on profits.

Researchers at the Lujeri Tea Estates in Malawi evaluated the impact of exposure to more, less, or equally productive peers on tea harvester productivity. They found that increasing the productivity of a worker’s peers meaningfully increased worker productivity, measured in kilograms of tea picked. This result was driven largely by women, whose productivity gains were much larger than those of men.

Researchers are testing whether giving vendors money to pay off their outstanding debts or offering financial literacy trainings can help break these borrowers' cycles of debt.

Researchers are testing the impact that stress-tolerant seeds, which have better yields than conventional varieties under weather shocks, affect landless laborers.

In Uganda, an incentivized community health promoter program increased health care access, knowledge, and health-promoting behaviors among households, leading to a 27 percent reduction in child mortality.

In this study, researchers evaluated the impact of daily SMS medication reminders on treatment outcomes for tuberculosis patients. The study found that SMS reminders had no impact on treatment outcomes, self-reported adherence to the treatment regime, or self-reported physical and psychological health.

Researchers varied the proportion of travel grants offered to landless households in rural villages in Bangladesh to assess the impact of the grants on temporary migration and income during the agricultural lean season—one of the hardest economic times of the year due to drops in food affordability. Providing cash subsidies for seasonal migration not only benefited the migrants and their families, but also indirectly improved welfare for households who were not offered a cash subsidy and increased agricultural wages in origin labor markets.

The proliferation of mobile money across low- and middle-income countries has led to increased availability of mobile payment systems, which can potentially allow more flexible payment terms for customers. Subsidies increased the use of mechanized desludgings, while pre-paid deposit requirements had no impact on their use. The flexibility of being able to save in advance in an earmarked savings account through the save-at-will treatment increased take-up through the program, but did so at the expense of take-up outside the program.

Researchers conducted a randomized evaluation to measure the impact of having a roommate who drank alcohol frequently before college on college students' grade point averages (GPAs). Results show that, while female students' GPAs were not affected by their roommate's drinking prior to college, male students' GPAs were significantly reduced by being assigned to a roommate who drank frequently before college.