Researchers evaluated whether Boston’s SYEP had an effect on the criminal justice outcomes of participants and sought to gauge the potential mechanisms driving these effects. The program reduced participants’ violent and property crime-related arraignments.

Researchers conducted a randomized evaluation to test the impact of lottery-based financial awards given to young individuals who tested STI-negative on their likelihood of contracting HIV and engaging in risky sexual behavior. The intervention provided frequent rewards at short intervals to bring the benefits of safe sex closer to the present and used a lottery design to try to target higher-risk individuals. Lottery-based financial incentives reduced the prevalence and incidence of HIV by 12 percent and 21 percent respectively, and their impact was largest among individuals with a high tolerance for risk.

The researcher conducted a randomized evaluation in rural Tanzania to determine the impact of an SMS-based messaging app that connects agricultural workers and employers on wages. He found that the SMS-based messaging app reduced wage spread within villages–meaning employers paid a wage closer to the average wage.

In northern Nigeria, researchers evaluated the impact of three community-based interventions designed to enhance uptake of maternal and child health services: a community health worker program, health educators with the provision of safe birth kits, and health educators with community dramas. While the community health educators increased utilization of maternal and infant care, health practices, and knowledge, none of the interventions improved maternal or child health outcomes.

Researchers introduced four savings devices to estimate the relative importance of different potential barriers to health savings. Results indicate that just providing a safe place to keep money led to a large increase in health savings. These results suggest that simply labeling funds for a specific purpose can help households save and invest more.

In Kenya, researchers studied whether information or price subsidies influenced demand for a simple health product which could be effective in preventing soil-transmitted helminths (STHs). While providing liquidity and targeting women can increase demand for preventative health products, price has the greatest impact on people's decision to purchase.

Researchers evaluated the impact of informing middle school teachers in Italy about their implicit stereotypes towards immigrant students on end-of-year grading. Both math and literature teachers eligible to receive feedback before the end-of-the-year grading gave higher grades to immigrant students.

In Uganda, researchers evaluated the effect of standardized business skills training on business performance as compared to more personalized mentoring services.

Researchers analyzed the effects of a small conditional cash transfer for education in Honduras on school enrollment and child labor.

Researchers sought to understand different types of information asymmetries and how they relate to loan default rates in South Africa. Borrowers given high interest rates had a greater incentive to default as it was more costly to repay the loan, but there was little evidence that borrowers defaulted because they had never intended to repay the loan.

In South Africa, researchers evaluated whether people have enough information to identify reliable borrowers among their peers and if they can help enforce loan repayment. They found that when given incentives, peers were not effective at screening for creditworthiness, but they were effective at enforcing peer repayment and reducing default.

In Sierra Leone, researchers evaluated the effect of publicly-screened debates during the run-up to parliamentary elections. Debates impacted voters’ political knowledge and voting decisions, and also caused candidates to invest more in their constituencies, both during the campaign and one year later.

In Uganda, researchers conducted a randomized evaluation to test the effectiveness of a program in which landowners were paid to not cut forest trees on their property. During the study period, landowners who were offered contracts to conserve forest cleared 4 percent of forested land, compared to 9 percent in villages where the program was not offered, delaying 3000 metric tons of carbon dioxide per village from being released into the atmosphere.