Researchers collaborated with Uber in Egypt to assess the impacts of expanding access to its ride services through price on the demand for ride-hailing and overall consumer mobility. Lowering the price of ride-hailing services increased people’s use of Uber and overall consumer mobility.

Researchers tested the impact of a meritocratic promotion system and beliefs about pay progression on the productivity of Community Health Workers in Sierra Leone. A combination of meritocracy and the promise of a steep salary increase after promotion led workers to make more health care visits, while non-meritocratic promotions with higher pay progression demotivated workers, reducing their productivity.

In many societies facing violent conflict, policymakers have attempted a number of strategies to reduce conflict and generate support for peace initiatives, but rarely consider the role that exposure to financial markets can play in mitigating social conflict. Researchers evaluated the impacts of increased exposure to financial markets on the political attitudes and voting preferences of voters in Israel. Results suggest that exposure to financial markets changed voters’ perception of the costs of conflict and their attitudes toward peace processes.

Researchers evaluated the impact of general and personalized information regarding the relationship between wood burning and indoor pollution on households’ knowledge of pollution and their pollution mitigation efforts. Both general and personalized information increased households’ awareness of pollution, but only personalized information improved households’ measured air quality.

Researchers conducted a randomized evaluation to test the impact of reducing the psychological costs of job applications, such as the tendency to postpone applications because completing a task today seems more burdensome than tomorrow, on job application rates and interviews in Lahore, Pakistan. The intervention, which involved follow-up calls inviting job seekers to apply for jobs, increased the number of job applications and interviews. The benefits of applying to jobs were similar after the increase in applications, suggesting that psychological costs play an important role in job search behavior.

Researchers evaluated a program delivering digital aid payments on food security and mental well-being for vulnerable female-headed households in Afghanistan. Digital payments led to improved food security and mental well-being for beneficiaries. Digital delivery of aid was also cost-effective and transparent, showing no evidence of diversion to the de facto Afghan authorities.

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.

Researchers randomly evaluated whether well-timed access to credit would allow maize farmers in Kenya to make better use of storage and sell their output at higher prices. The loan offers allowed farmers to store more maize and earn higher revenues, with larger revenue impacts for farmers granted loans immediately following harvest and in areas where a smaller share of farmers was offered loans.

In India, researchers evaluated the impact of the first emissions trading scheme for particulate matter on air quality, industry compliance costs, and industry profits. Compliance with the market was high, and participating firms substantially reduced their particulate matter emissions without large increases in abatement costs, suggesting that the emissions trading scheme was a cost-effective pollution reduction strategy

Researchers worked with the state government to evaluate the impact of three programs to build demand for vaccination: local immunization ambassadors, small, non-financial incentives, and tailored SMS reminders. The most effective policy option increased measles vaccination by approximately 55 percent by combining local immunization ambassadors selected by the community, incentives that increased in amount across the immunization schedule, and SMS reminders to caregivers about the next scheduled vaccine.