Search our database of 1094 randomized evaluations conducted by our affiliates in 91 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

Displaying 17-24 of 1094

Evaluating the Impact of Play-Based Learning on Early Childhood Development in South Africa

In KwaZulu-Natal, researchers are measuring the impact of the Six Bricks program, which promotes structured play using manipulative bricks combined with a set of carefully designed pedagogical activities, on preschoolers' executive function skills.

Harvesting Rainfall: Experimental Evidence from Cistern Deployment in Northeast Brazil

Gustavo Bobonis
Simeon Nichter

Distributing water cisterns in northeast Brazil led to fewer requests for private benefits from local politicians and fewer votes for incumbent mayors, who typically have more resources to engage in clientelism. Marco Gonzalez-Navarro and J-PAL's Latin America & Caribbean office are now working with...

Radio Public Service Announcements and Voter Participation Among Native Americans in the United States

Eline de Rooij

Can media campaigns increase voter turnout among those underrepresented in the electorate? Researchers randomly assigned areas covered by Native American radio programming to either receive or not receive targeted radio messaging encouraging listeners to vote in the 2008 and 2010 US elections. The...

Interfirm Relationships and Business Performance in China

Adam Szeidl

Can facilitating relationships between small- and medium-sized businesses help them grow? In Jiangxi Province, China, researchers conducted a randomized evaluation to study the impact of business relationships on firm performance. Monthly meetings among firms increased sales, profits, and other...

Involving Parents in their Children’s Education in Chile

Can a multi-dimensional program enhance parental involvement and student outcomes? A program implemented in low-income public elementary schools led to improved parental involvement and improved relationships between parents, students, and teachers.

The Impact of Exposing Corrupt Politicians through Government Audits in Brazil

Billions of dollars in government funds go missing each year due to corruption, but there is limited consensus on how best to tackle this global challenge. Researchers leveraged data from Brazil’s long-standing anticorruption program, which holds public lotteries to randomly select municipalities...

Teacher Training and Entrepreneurship Education: Evidence from a Curriculum Reform in Rwanda

Moussa Blimpo
Todd Pugatch
Working with the Rwandan Education Board, Educate!, and Akazi Kanoze Access, researchers are examining the impact of a program that trains teachers in Rwanda’s revised secondary school entrepreneurship curriculum on student academic, economic, and labor market outcomes.

Marketing Effects in a Consumer Credit Market in South Africa (Pricing the Effect of Psychological "Features")

Working closely with a highly profitable consumer lender in South Africa, researchers sought to determine the effects of advertising content, price, and offer deadlines on loan take up. They found the marketing had significant effects on loan take up, but not on loan amount or default rates. Clients...