By the time they reach primary school, disadvantaged children often lag behind their more advantaged peers in the skills and concepts of formal math. To address this issue, researchers examined the impact of math games, played in preschools and exercising early emerging, universal and intuitive numerical and spatial abilities, on children’s learning of school math in Delhi, India. They found that the games led to long-term increases in children’s intuitive math abilities. The games also bolstered children’s mastery of the spatial and numerical language used in the preschools, but they did not enhance children’s subsequent learning of primary school mathematics.

In Kenya, researchers conducted a randomized evaluation to test the impact of a contract teacher program on student learning outcomes, comparing implementation between an NGO and the government. The NGO-led program improved student test scores, while the government-led version had no impact.

The City of Chelsea implemented a cash transfer program called Chelsea Eats, which provided eligible households with up to US$400 per month for nine months. Researchers conducted a randomized evaluation on the impact of the unconditional cash transfer on health care utilization and a variety of health outcomes. Those who received the cash transfer had fewer emergency department visits, including those related to behavioral health or substance use, fewer admissions to the hospital from the emergency department, and more outpatient visits to subspecialists than those who did not receive the cash transfer.

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 evaluated the effect of a gender-transformative skills-building program on IPV incidence, HIV risk behaviors, and other health outcomes in rural Ethiopia. Overall, the program led to reductions in IPV when delivered to groups of men, but not when delivered to couples or to women only. Further, across all groups, the program increased support for gender equitable norms, increased equity in intrahousehold decision-making, and reduced HIV risk behaviors.

Researchers evaluated three STEM-focused summer programs for high school students and found that the programs increased students’ likelihood of attending a highly-ranked university, graduating, and earning a degree in STEM.

Researchers examined the level of racial discrimination in the United States labor market by randomly assigning identical résumés black-sounding or white-sounding names and observing the impact on requests for interviews from employers. Results found that résumés with white-sounding names received 50 percent more callbacks than those with black-sounding names, indicating that, all other things being equal, considerable racial discrimination exists in the American labor market.

Researchers studied hiring discrimination among major employers in the United States by sending fictional resumes, with varying demographic information, to determine whether certain characteristics would lead to different follow-up contact rates. Employers were less likely to contact resumes with distinctively Black names than resumes with distinctively white names.

Researchers conducted a randomized evaluation to test the impact of an in-school remedial education program on student learning in Odisha, India. Both the standard and a version that allowed teacher flexibility improved student test scores without reducing grade- level mastery or affecting the likelihood of passing exams.

Researchers partnered with the Côte d'Ivoire government to measure the short- and long-term impacts of a public works program, along with complementary trainings on basic entrepreneurship and job search skills. In the short term, the program led to a shift toward wage jobs (as opposed to self-employment), higher earnings and savings, and improved well-being. However, most of these effects dissipated in the long-run.

Researchers worked with the City of Rochester and local social service providers to evaluate the Bridges to Success program, in which participants were paired with mentors who helped them move towards economic self-sufficiency.

In many countries, rural populations access social services through decentralized systems that hire community-based workers with high monitoring needs, leaving little time for supervisors to perform other essential functions. Researchers are evaluating the impact of a phone-based e-monitoring app and organizational structure on frontline worker performance and service delivery in Sierra Leone.

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.

Researchers examined the impact of race concordance (when the race of a patient matches that of their physician) and incentives on the take-up of preventive health services by Black men. Results indicate that physician race concordance significantly boosted demand for all preventive health services, and especially for more invasive tests.

To promote export diversification, the Tunisian government is implementing a $22 million export matching-grant scheme, TASDIR+. TASDIR+ aims to increase exports and promote export diversification toward higher value-added exports and new markets. This study is using a randomized controlled trial to evaluate TASDIR+’s traditional matching grant scheme and a newly implemented rebate scheme.