Search our database of 1178 randomized evaluations conducted by our affiliates in 95 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

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Chauffage au bois et pollution aux particules en Île-de-France

Coralie Chevallier
Rita Abdel Sater
Mathieu Perona
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...

Smart Meters: Do Prices Matter to Their Adoption and Do They Save Energy?

Michael Price
Researchers conducted a randomized evaluation to test the impact of financial incentives on the take-up of energy-efficient smart meters and subsequent energy use in partnership with British Gas. While offering incentives increased smart meter adoption, customers did not reduce their energy...

Harvesting Rainfall: Experimental Evidence from Cistern Deployment in Northeast Brazil

Distributing water cisterns in northeast Brazil led to fewer requests for private benefits from local politicians and fewer votes for incumbent mayors, who typically have more resources to engage in clientelism. Marco Gonzalez-Navarro and J-PAL's Latin America & Caribbean office are now working with...

Emissions Trading Scheme (ETS) for particulate matter in Gujarat, India

In India, researchers are evaluating the impact of the first emissions trading scheme for particulate matter on air quality, industry compliance costs, and industry profits.

Are Rainwater Harvesting Techniques Profitable for Small-Scale Farmers? The Adoption and Impact of RWH Techniques in Niger

In Niger, researchers conducted a randomized evaluation to test the impact of providing training and conditional or unconditional cash transfers on farmers’ adoption and use of an environmental technology, their resulting land use, agricultural production and profitability, and labor allocation.

Technology Adoption Under Uncertainty: Take-Up and Subsequent Investment in Zambia

Paulina Oliva
Christopher Severen
Elizabeth Walker
Samuel Bell
Technology adoption often requires investments over time. As farmers realize new information about the costs and benefits of investments, they may abandon the newly adopted technology shortly after. Researchers partnered with the non-governmental organization Shared Value Africa and Dunavant Cotton...