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Researchers evaluated the impact of direct mail and phone calls on the turnout of Black voters in ten different states. Neither mailings nor phone calls significantly impacted voter turnout, perhaps due to the large volume of political messaging that voters had to navigate.

Researchers investigated how two different free tuition programs for low-income students affected application and enrollment to the University of Michigan. An unconditional offer substantially increased application and enrollment while a conditional offer had a much smaller effect on applications...

In slums near Nairobi, Kenya, researchers are testing how subsidizing the cost of connecting to the sewer system and providing information about the health benefits of improved sanitation affects the number of landlords who connect to the sewer system.

Researchers are evaluating the impact of Farmer Managed Natural Regeneration and formalized land rights on reforestation and crop yields.

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...

Researchers designed an employment program in northern Ghana and evaluated participants’ willingness to engage in paid labor and carry out complex tasks on the job.