In Kenya, researchers introduced a messaging campaign on matatus (local buses) to encourage individuals to speak up against reckless driving and reduce road accidents rates. Placing these stickers in the passenger area of matatus decreased insurance claims rates, average speed, and number of road accidents per year.

In partnership with the Hyderabad City Police (HCP), researchers conducted a randomized evaluation to test the impact of a police patrolling program aimed at improving women’s safety on the frequency of sexual harassment and women’s freedom to move around in public spaces. The presence of uniformed officers in public spaces reduced instances of severe forms of sexual harassment and led to fewer women relocating from the patrolled areas.

Researchers conducted a randomized evaluation to test the impact of the combination of an in-school learning program with an out-of-school learning program on primary school math and reading levels. The combination of the two programs led to a significant increase in children's test scores in both math and language.

In this randomized evaluation in Romania, researchers compared the roles of preferences and information in households’ decision-making, with regard to high school selection. Results suggest that households provided with information on school quality tend to choose schools that have a greater academic impact on their children. However, households’ preferences for other school attributes also factor into their decision-making, including peer quality, location, and, most importantly, curriculum.

Researchers conducted a randomized evaluation to test the impact of text message reminders on rates of failure to appear in court (FTA) among people who are unhoused and housed in rural Shasta County, California. The reminders reduced FTA rates for the housed population, but did not impact FTA rates for people experiencing homelessness.

In Turkey, researchers evaluated the impact of a new pedagogical approach aimed at cultivating primary school students’ curiosity, particularly in science, to improve learning outcomes. Students whose teachers adopted the approach displayed greater curiosity, ability to retain knowledge, and science test scores, with effects persisting into middle school years.

Researchers conducted a randomized evaluation to improve the quality of job matches in South Africa. They matched applicants to entry-level vacancies using different types of information: workers’ preferences for job types; communication and socio-emotional skills; or grades and work experience.

Researchers evaluated the impact of performance scorecards on the speed of delivery and the payment of bribes. Results show that the intervention increased on-time service delivery, but did not decrease bribe payments on average; bribes among high-performers increased.

Researchers partnered with the Egyptian Center for Women’s Rights to evaluate the effect of educational social media and TV campaigns on women’s attitudes and behaviors around responding to GBV and IPV. The social media campaign increased women’s knowledge and use of resources, but had no impact on their underlying attitudes towards gender equality or gender-based violence.

Researchers partnered with the Government of Pakistan to conduct two parallel randomized evaluations to test the impact of providing supplemental teaching materials on the quality of student learning and teachers’ effectiveness. Overall, the eLearn Classroom intervention improved student achievement and students’ attendance for grade 8 students. Conversely, providing grade 6 students with individual eLearn Tablets worsened their test scores.

Researchers conducted a randomized evaluation to test the impact of expected earnings on candidates’ perception of a community health worker position in Uganda, and on the resulting size and composition of the applicant pool. Fewer socially motivated participants applied when advertised wages were particularly high. Although higher wages increased the total number of applicants and workers hired, workers attracted by the potential for higher earnings also had lower performance and retention.

Researchers conducted a business plan competition to test whether panel judges or questionnaires answered by firm owners could more accurately identify the fastest growing firms in Ghana. Both survey assessments and judging of business plans through panels selected firms with the potential for faster growth.

Researchers conducted a randomized evaluation to test the impact of employment on refugee psychosocial well-being in Bangladesh. The study found that employment generated significant psychosocial value beyond that from cash transfers alone.

In this randomized evaluation in Zimbabwe, researchers studied how social media messages targeting misinformation can affect people’s beliefs about and responses toward Covid-19. The study found that these messages increased participants’ knowledge of Covid-19 information by 7 percentage points and reduced potentially harmful behavior, or noncompliance with lockdown guidelines, by 30 percentage points.

Researchers evaluated the impact of a flexible microloan product on new clients' repayment behavior, business outcomes, and client satisfaction. The results showed that the flexible loan led to some shifts in investment behavior but had no average impact on revenue or profits and led to higher default.