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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.

Gender Gaps in the Diffusion of Agricultural Technology in Malawi

Ariel BenYishay
Maria Jones
Florence Kondylis
Researchers studied the impact of the gender of communicators on the effects of a program to train farmers to communicate information on agricultural technology to other farmers. While there was no gender gap in communicators’ ability to acquire, retain, and use the information about the technology...

Are Agricultural Traders Colluding? Testing the Degree of Competition Among Maize Traders in Kenya

Michael Dinerstein
Researchers conducted three randomized evaluations to measure the degree of competition among wholesale maize traders, understand the implications for social welfare, and test whether new traders could make a market more competitive. Researchers found that traders did not pass through much of a...

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 Effect of Matching on Worker Skills versus Preferences on Firm-Worker Matches in South Africa

Researchers conducted a randomized evaluation to improve the quality of job matches in South Africa. They matched applicants to entry-level vacancies using different types of information: workers’ preferences for job types; communication and socio-emotional skills; or grades and work experience.

Peer Effects, Pupil-Teacher Ratios, and Teacher Incentives in Kenya

Researchers evaluated three interventions that addressed the large class sizes and heterogeneity in student preparation in the Kenyan school system. They found that hiring additional local contract teachers helped reduce classroom overcrowding and improved student learning outcomes. The biggest...

Encouraging Underserved, Intellectually-Curious Children: An Evaluation of the Higher Achievement Program in Washington, DC

Jean Grossman
Carla Herrera
Researchers evaluated the academic impact of a “Cadillac” OST program in Washington, DC. Researchers found that the program increased students’ problem-solving and reading comprehension scores after two years.

Business Training for Women in Ahmedabad, India

Researchers offered two days of business training and assistance in identifying a medium-term financial goal to a random sample of women of different castes and religions in India. A random sub-sample of women were invited to attend the training with a friend. Women trained with a friend doubled...

The Use and Misuse of Computers in Education: Evidence from a Language Arts Program in Colombia

In Colombia, researchers evaluated the impacts of a national computer distribution program (Computers for Education) on student test scores, time spent on learning, and attitudes towards education. The program had no effect on math or Spanish test scores, hours of study, or perceptions of school...