Researchers conducted a randomized evaluation in the Indian state of Tamil Nadu on the impact of adding an additional education-focused worker in early childhood development centers on students’ learning and health outcomes. The program increased the time spent on pre-school education, boosting learning in math, reading, and executive function. It also allowed the main worker to devote more time to health and nutrition, reducing severe malnutrition and stunting.

In collaboration with China’s National Environmental Inspection Program, researchers are evaluating the impact of reporting firms’ hourly emissions data to environmental inspectors on the likelihood of firms being inspected, local air pollution, local economic output, and health outcomes.

Researchers partnered with a rural development organization to evaluate financial incentives for voluntary groundwater conservation among smallholder farmers in Gujarat, India.

Researchers conducted a correspondence study assessing property managers’ responses to rental listing inquiries from prospective tenants with distinctively Black, Hispanic/Latinx, or white names in the United States. Property managers were significantly less likely to respond to messages from prospective Black or Hispanic/Latinx renters than white ones.

Researchers designed a free online tutoring program delivered by volunteer university students to test whether it could mitigate the effects of school closures during the COVID-19 outbreak. They found that the program had a positive outcome on students' learning outcomes, socio-emotional skills, and psychological well-being.

In Colombia, researchers are evaluating the economic impact of providing stimulus loans to SMEs, distributed via the government’s COVID-19 relief program (“Unidos por Colombia”), on SME survival, profits, and employment.

Researchers conducted a randomized intervention to measure the impact of financial incentives for reaching daily step goals on physical activity and depression risk during the Covid-19 pandemic, to better understand the association between physical activity and mental health. While program participants significantly increased their daily steps relative to the comparison group, this change in physical activity did not lead to improvement in their mental well-being.

Researchers partnered with bKash, one of the leading mobile money providers in Bangladesh, to evaluate the impact of targeted training programs on mobile banking uptake among migrant households. Training increased migrants’ and their families’ adoption of mobile banking, with women adopting the technology at similar rates to men, shrinking the gender gap.

Researchers evaluated the impact of financial incentives, public health video messages, and access to a vaccine scheduling link on Covid-19 vaccination intentions and vaccine take-up in the United States. None of the interventions led to increases in vaccine take-up after thirty days. In a subsequent study, researchers found that personal reminder messages led to increases in booster vaccination rates while monetary incentives had no additional impact.

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 enact behavior change.

Diarrhea is a leading cause of death in children under the age of 5, but adding small amounts of chlorine into water can treat water and prevent a large number of these deaths. Providing free dispensers for chlorine to treat water reduced under-five mortality. Children living in villages with dilute chlorine solution dispensers were 63 percent less likely to die relative to the comparison group.

Researchers varied patients’ information about a discount on treatment for simple malaria and measuring take-up of treatment to identify the factors driving overtreatment. While patient pressure on doctors in response to the discount led to excess prescription of antimalarials, there was no evidence of doctors strategically using the vouchers to direct patients toward expensive treatment options.

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.

Researchers evaluated the impact of light-touch psychological interventions on health and economic outcomes, with a particular focus on the chlorination of drinking water. After 12 weeks, visualization increased objectively measured chlorination; it also reduced diarrhea episodes among children and increased savings. After almost three years, visualization increased chlorination, savings, and labor supply, while effects of the planning intervention were weaker.

Researchers are conducting a randomized evaluation to test the impacts of group-based therapy with and without a one-time lump sum cash transfers on the mental health and employment outcomes of adolescent girls in Uganda.