Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 97 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

Displaying 305-312 of 1223
air pollution

The Impact of an Emissions Trading Scheme on Economic Growth and Air Quality in India

Michael Greenstone
Rohini Pande
Nick Ryan
Anant Sudarshan
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...
houses in Medellín, Colombia

Contesting Criminal Gang Governance in Medellin: The Impacts of Intensive Municipal Governance and Community Organization on Gang Control and Governing of Neighborhoods

Chris Blattman
Gustavo Duncan
Benjamin Lessing
Santiago Tobón
In partnership with the City of Medellín, researchers randomly introduced a program that intensified government outreach to gang-controlled neighborhoods. The study found no evidence that the city’s intervention reduced gang rule.
A woman bows her head in prayer while seated in a pew

The Impact of a Christian Values Program on Wellbeing in the Philippines

Gharad Bryan
James Choi
Dean Karlan
In the Philippines, researchers conducted a randomized evaluation to measure the impact of an evangelical Protestant religious values and theology education program on individuals' economic and subjective wellbeing.
A woman is viewing a career website on a laptop

Gender, Marital Status, and Labor Market Discrimination in Egypt

Caroline Krafft
Researchers conducted a randomized evaluation to assess employer discrimination by randomizing applicants' self-described gender and marital status on resumes submitted to prospective employers.
Three women sitting and relaxing on stone ledge by water, looking at phones

The Impact of Exposure to Discordant Media on Political Polarization in Turkey

Ahmet Akbiyik
Jeremy Bowles
Horacio Larreguy
Shelley Liu
Researchers evaluated the impact of exposure to and incentives to consume discordant media on political attitudes and behaviors in Turkey. Participants changed their media consumption habits, trusted discordant media sources more, and had less polarized attitudes towards the government, but did not...
Seasonal Migrant workers in Indonesia working in construction in urban environment.

Evaluating Transfer Size in a Conditional Cash Transfer Program for Seasonal Migrants in Indonesia

Researchers conducted a randomized evaluation to test the impact of a cash transfer program conditional on seasonal migration and an unconditional cash transfer (UCT) program on rural households’ decisions to migrate and migration season earnings in West-Timor, Indonesia. Relative to the UCT, the...
Table with condom, vials, and meters for HIV testing

Can Lotteries Help Prevent HIV Among Youth? Evidence from Lesotho

Lucia Corno
Martina Björkman Nyqvist
Jakob Svensson
Damien de Walque
Researchers conducted a randomized evaluation to test the impact of lottery-based financial awards given to young individuals who tested STI-negative on their likelihood of contracting HIV and engaging in risky sexual behavior. The intervention provided frequent rewards at short intervals to bring...
Women stand at a curb hailing a cab or rideshare car

Ride-Hailing Services to Increase Urban Mobility in Egypt

Peter Christensen
Adam Osman
Researchers collaborated with Uber in Egypt to assess the impacts of expanding access to its ride services through price on the demand for ride-hailing and overall consumer mobility. Lowering the price of ride-hailing services increased people’s use of Uber and overall consumer mobility.