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Browse news articles about J-PAL and our affiliated professors, and read our press releases and monthly global and research newsletters. For media inquiries, please email us.

The Impact of Training on Best Practices in Coffee Growing in Rwanda

In Rwanda, researchers worked with TechnoServe to evaluate the impact of an agronomy training program on farmers’ knowledge and use of best practices in coffee-growing. Preliminary results suggest that the trainings helped some farmers improve their coffee-growing practices, but that the practices...

Impact of Home Computers on the Academic Achievement of Low-Income Children in the United States

Jonathan Robinson
Researchers analyzed the impact of a program that provided students in California with a home computer on students’ academic achievement. The program had no effect (either positive or negative) on any educational outcome, including grades, standardized test scores, and attendance.

Measuring the Critical Window for Cognitive Skill Formation and Physical Development in Nicaragua

John A. Maluccio
In Nicaragua, researchers compared the cognitive and health outcomes of boys whose families received conditional cash transfers in the first three years of their lives to those who received the transfers later. Exposing boys to the program during the first 1,000 days of life led to better cognitive...

Mobilizing Group Membership: The Impact of Personalization and Social Pressure Emails in the United States

James N. Druckman
This study evaluated the efficacy of three different types of emails in encouraging group membership: an impersonal email, a personalized email, and a personalized email that included an element of social pressure. Researchers found that membership increased most among recipients of the social...

The Effects of Canvassing, Phone Calls, and Direct Mail on Voter Turnout in the United States

Researchers examined the effects of personal canvassing, phone calls, and direct mail on voter turnout shortly before the 1998 general election in the US city of New Haven. Personal canvassing had a far greater influence on voter participation than three pieces of professionally crafted mail...

Reintegrating Incarcerated Felons into the Political System in the United States

Daniel Biggers
David Hendrey
Gregory A. Huber
Marc Meredith
Researchers evaluated the impact of mailings that informed people with a record of felony conviction of their eligibility to vote on political participation. The mailing increased political participation, particularly among individuals that were active voters prior to incarceration.

Preventing Youth Violence and Dropout in the United States

Roseanna Ander
Philip J. Cook
Kenneth Dodge
George Farkas
Harold Pollack
Anuj Shah
Laurence Steinberg
In the United States, researchers evaluated the impact of a cognitive behavioral therapy (CBT) program designed to teach high-risk male students in secondary schools to regulate harmful, automatic behaviors. Results demonstrated that the program led to a significant drop in arrests per student...