Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 98 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

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Brick apartments pictured from the street

Improving Access to Information to Facilitate Moves to Opportunity

Researchers added school-quality information onto housing listings on the AffordableHousing.com (formerly GoSection8) website, the largest provider of housing listings for HCV recipients, to evaluate the impact on families search for housing and their residential locations. The researchers found...
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The Impact of Offering Pay-as-you-go Car Insurance on Covering Drivers in California

Researchers conducted a randomized evaluation to test the impact of introducing a pay-as-you-go car insurance contract, which reduces minimum purchase requirements, to uninsured drivers in California. Applicants who were offered this type of insurance were nearly twice as likely to purchase car...
Hands reaching for water from a spigot in Ethiopia.

The role of information, accountability and resource gaps in explaining poor urban services quality in Addis Ababa and its rapidly urbanizing surroundings

Girum Abebe
Daniel Agness
Pascaline Dupas
Tigabu Degu Getahun
In partnership with the Ethiopian Development Research Institute (EDRI), researchers are providing report cards that document citizen satisfaction with a range of public services to various levels of government officials to measure the impact of information and accountability on public service...
Health insurance forms

The Effect of Behavioral Nudges via Mailed Letters on Subsidized Health Insurance Take-up

Keith Ericson
Timothy Layton
Adam Sacarny
This study examined the impact of an administrative simplification and a series of behavioral nudges (all via letters sent by mail) on enrollment in subsidized health insurance plans. The administrative simplification, which provided a streamlined path to enrollment, had the largest effect on...
Factory worker in India

Increasing Firm Productivity through Management Consulting Services in India

Nicholas Bloom
Benn Eifert
Aprajit Mahajan
David McKenzie
John Roberts
A young man wearing a fit bit, black surgical mask, and white hoodie runs on the sidewalk with cars and buildings in the background.

Incentivizing Physical Activity to Improve Mental Health During Covid-19 Disruptions in the United States

Osea Giuntella
Kelly Hyde
Silvia Saccardo
Sally Sadoff
Researchers conducted a randomized intervention to measure the impact of financial incentives for reaching daily step goals on physical activity and depression risk during the Covid-19 pandemic, to better understand the association between physical activity and mental health. While program...

Candidate Debate Participation for Citizen Engagement and Electoral Outcomes in Liberia

Jeremy Bowles
Horacio Larreguy
Researchers evaluated a nationwide debate initiative in Liberia designed to solicit and rebroadcast policy promises from legislative candidates. Results indicated that when leading candidates participated in debates, citizens were more engaged and informed.
Young students do schoolwork in a classroom in Puerto Rico

Principal Training to Improve Student Achievement in Puerto Rico

Gustavo Bobonis
Marco Gonzalez-Navarro
Daniela Scur
Researchers are evaluating the impact of changes in school management practices on student outcomes over time by introducing a large-scale principal training program for school directors in Puerto Rico and testing different strategies to sustain improved management practices after the program.