In Uganda, researchers studied the demand for rainwater storage devices, the effectiveness of various marketing strategies in promoting them, and their impact on indicators such as school attendance and women’s participation in the labor market.

Researchers evaluated a cap-and-trade program in the United States to determine if the initial allocation of permits among firms affected how much firms decided to pollute. Evidence was consistent with, but not proof of, the economic theory that firms make decisions to reduce emissions based on their abatement costs and not the initial distribution of permits.

Researchers evaluated the impact of case management and immediate financial assistance compared to only financial assistance on housing and health outcomes for youth and families with children.

Researchers introduced a randomized information intervention to see if providing information on how different allocation methods work would shift the preferences of beneficiaries of a Nepalese land allocation program. On average, the information intervention did not change preferences for how land should be allocated, and about half of participants still preferred allocation methods that were less likely to match them with their desired plot of land.

In the Dominican Republic, researchers investigated families’ perceptions of the returns to education and whether providing information on the actual returns to education would change their schooling decisions. They found that students significantly underestimated the returns to secondary education, and providing them with information about the actual returns led them to complete 0.2 additional years of schooling.

Researchers evaluated the impact on student learning outcomes of two programs introduced by the Government of Haryana. While the Continuous and Comprehensive Evaluation (CCE) program did not have any effect on test scores, the Learning Enhancement Program (LEP), which focused on basic literacy and numeracy, significantly improved Hindi test scores, especially for students with initially low learning levels.

Researchers studied how a school grant program affected learning outcomes and household spending. After the first year of the grant program, students in treatment schools performed significantly better than those in comparison schools, but by the end of the second year, there was no detectable impact on student learning.

Researchers introduced two programs during peak consumption hours—text messages encouraging energy conservation for the benefit of society, or price increases—to evaluate the impact of social motivation and dynamic pricing on energy conservation. Both programs led to reductions in electricity use, but the impacts of the dynamic pricing were larger and persisted for longer than the impacts of the social motivation messages.

Researchers studied the impact of providing information about fuel costs on consumers’ car purchases. Providing information about fuel costs had no effect on the fuel efficiency of the vehicles consumers chose to buy.

In Bangladesh, researchers evaluated how varying husband-wife dynamics, information, and prices could affect purchases of widely available “improved” stoves, which substantially reduce indoor air pollution. They found that women have stronger preferences for improved stoves than their husbands, but lack the authority to make purchasing decisions. Their findings also suggest that marketing campaigns can prompt initial adoption of unfamiliar technologies like improved stoves, but are less effective in the long run as common experience with technologies grows.

While researchers found a meaningful reduction in smoke inhalation in the first year after households received an improved stove, there was no effect over longer time horizons. The difference between the laboratory and field results is due to households’ revealed low valuation of the stoves. Households failed to use the stoves regularly or appropriately, did not make the necessary investments to maintain them properly, and use ultimately declined over time.

Researchers partnered with a water company in Zambia to evaluate whether improved information and incentives can help households manage their water usage. They found that targeting incentives to higher household water consumers might be an effective way to reduce water consumption.

Researchers worked with an airline to test the impact of different types of information and incentives on pilots’ productivity, as measured by pilots’ implementation of fuel-saving practices. Provision of personalized targets for achieving these fuel-saving practices led pilots to implement them more frequently without increasing flight delays.

Researchers are conducting a randomized evaluation to test the impact of emissions reductions-focused loan support to small and medium firms in Türkiye on reducing these firms’ greenhouse gas emissions and protecting firm growth.

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.