Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 99 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

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Commitment Contracts for Smoking Cessation in the United States

Daren Anderson
Samantha Horn
Amanda Kowalski
Jody Sindelar
This study will examine whether a combination of positive and negative commitment devices can induce long-term smoking cessation in smokers from a low-to-moderate income background in Connecticut.

The Impact of Targeted Mailers to Re-Engage US Voters with Criminal Convictions

Laurel Eckhouse
Eric Foster-Moore
Allison Harris
Hannah Walker
Researchers evaluated the impact of targeted mailings encouraging people with criminal records to register to vote on voting behavior in North Carolina. Mailers increased both voter registration and general election turnout among people with past criminal convictions.

The Impact of In-School Application Support on College Application and Enrollment Rates in Canada

Reuben Ford
Researchers studied the impact of an in-school program to provide application assistance at schools where fewer than half of high school seniors typically enter college the following year. Application fee waivers combined with an online tool that provided customized college information boosted...

Randomized Evaluation of the Nurse Family Partnership in South Carolina

Farah Allouch
Samuel Ayers
Alyna Chien
Rebecca A. Gourevitch
Michele R. Hacker
Michelle Woodford Martin
Nicolas Perreault
Slawa Rokicki
Chloe Zera
Annetta Zhou
Researchers are evaluating the impact of an intensive nurse home visiting program for low-income mothers on pregnancy and birth outcomes, child health and development, and future life-courses for the family. The program had no effect on adverse birth outcomes or prenatal outcomes such as health care...

Principal Training to Improve Student Achievement in Puerto Rico

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.

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...

Auditing Schools' Responsiveness to Students with Disabilities in Districts of Choice

Isaac McFarlin
Researchers sent emails to schools posing as parents of students with randomly-varied characteristics to assess if schools responded differently to different types of students. The researchers found that on average both charter and traditional public schools were less likely to respond to students...

Sending Text Messages to Parents to Improve Student Achievement in Middle and High Schools in the United States

Eric W. Chan
A randomized evaluation of the text alert program showed that the intervention reduced course failures, increased class attendance and improved in-class exam scores. The effects are larger for students with below-average GPAs and students in high school, and positive effects persist into the second...