Search our database of 1129 randomized evaluations conducted by our affiliates in 93 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

Displaying 1-8 of 243

The Impact of a School-Based Smoking Prevention Program in Indonesia

Margaret Triyana
Justin S. White
Researchers conducted a randomized evaluation to measure the impact of a school-based program that used a non-monetary penalty and regular monitoring to prevent adolescent tobacco use. The program reduced the probability that adolescents smoked, with effects sustained three months after the program...

The Impact of a Nurse Home Visiting Program on Maternal and Early Childhood Outcomes in the United States

Slawa Rokicki
Samuel Ayers
Farah Allouch
Nicolas Perreault
Rebecca A. Gourevitch
Michelle W. Martin
Annetta Zhou
Chloe Zera
Michele Hacker
Alyna Chien
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; the other categories of outcomes are...

The Value of Health Insurance: A Randomized Evaluation in India

Gabriella Conti
Kosuke Imai
Ramanan Laxminarayan
Anup Malani
Alessandra Voena

The Economic, Health and Psychological Effects of Health Insurance and Unconditional Cash Transfers in Kenya

Johannes Haushofer
Matthieu Chemin
Chaning Jang
Justin Abraham
Researchers evaluated the effects of a free health insurance policy and UCTs of the same value on the economic, health, and psychological outcomes of informal workers in Kenya. Participants who received health insurance self-reported reduced stress and had lower cortisol levels; UCTs led to fewer...

Visualization of Future Benefits to Increase Preventive Health Investment, Savings, and Labor Supply in Kenya

Anett John
Researchers evaluated the impact of light-touch psychological interventions on health and economic outcomes, with a particular focus on the chlorination of drinking water. After 12 weeks, visualization increased objectively measured chlorination; reduced diarrhea episodes among children and...

The Impact of Cognitive Behavioral Therapy on Low-Income Individuals in Rural Ghana

Nathan Barker
Angela Ofori-Atta
Cognitive behavioral therapy (CBT) may be an effective mental health approach for people living in poverty, who are especially vulnerable to mental distress and face unique demands on their mental “bandwidth.” Researchers worked with Innovations for Poverty Action and the University of Ghana Medical...

Improving Immunization Coverage Through Incentives, Reminders, and Social Networks in India

Suresh Dalpath
Matthew O. Jackson
Francine Loza
Maheshwor Shrestha
Victor Chernozhukov
Mert Demirer
Iván Fernández-Val
Researchers worked with the state government to evaluate the impact of three programs to build demand for vaccination: local immunization ambassadors, small, non-financial incentives, and tailored SMS reminders. The most effective policy option increased measles vaccination by approximately 55...