Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 96 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

Displaying 9-16 of 207

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

Osea Giuntella
Kelly Hyde
Silvia Saccardo
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...

The Effects of STEM Summer Programs on College Major, Persistence, and Graduation for Underrepresented High School Students in the United States

Researchers evaluated three STEM-focused summer programs for high school students and found that the programs increased students’ likelihood of attending a highly-ranked university, graduating, and earning a degree in STEM.

The Impact of Poverty Reduction Among New Mothers on Child Brain Development in the United States

Molly A. Costanzo
Nathan Fox
Sarah Halpern-Meekin
Katherine Magnuson
Kimberly Noble
Sonya V. Troller-Renfree
Hirokazu Yoshikawa
Researchers evaluated the impact of poverty reduction via an unconditional cash transfer to mothers on child neurodevelopment. Children in families that received a $333 monthly transfer displayed different brain activity patterns than children whose mothers received only $20 a month.

Forgive and Forget: The Impact of Medical Debt Relief on Financial and Health Outcomes in the United States

In this randomized evaluation, researchers evaluated the impact of a medical debt relief program (that buys and relieves a portion of individuals’ medical debt) on measures of mental and physical health, health care utilization, and financial well-being—including financial distress, credit score...

Matching Provider Race to Increase Take-up of Preventive Health Services among Black Men in the United States

Owen Garrick
Grant Graziani
Researchers examined the impact of race concordance (when the race of a patient matches that of their physician) and incentives on the take-up of preventive health services by Black men. Results indicate that physician race concordance significantly boosted demand for all preventive health services...

Letters of Recommendation for Youth Employment in the United States

Researchers partnered with SYEP employers to create personalized letters of recommendation for SYEP participants to evaluate the impact of recommendation letters on participants’ educational and employment outcomes after the program. Youth who received the letter of recommendation saw a 3 percentage...

Leveling the Playing Field for High School Choice: A Field Experiment of Informational Interventions in the United States

Researchers evaluated the impact of several informational interventions with different modes of delivery and customization levels on high school choice outcomes among middle school students in New York City. All interventions made students less likely to rank a low graduation rate high school as...

Closing the Word Gap with Big Word Club: Evaluating the Impact of a Tech-Based Early Childhood Vocabulary Program

Researchers evaluated the Big Word Club, a classroom-based digital learning program designed to increase the vocabulary of young children, to assess the program’s impact on children’s receptive vocabulary. Researchers found that the Big Word Club increased students’ knowledge and retention of words...