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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.

Contesting Criminal Gang Governance in Medellin: The Impacts of Intensive Municipal Governance and Community Organization on Gang Control and Governing of Neighborhoods

Gustavo Duncan
Benjamin Lessing
In partnership with the City of Medellín, researchers randomly introduced a program that intensified government outreach to gang-controlled neighborhoods. The study found no evidence that the city’s intervention reduced gang rule.

Using Cell Phones to Monitor the Delivery of Government Payments to Farmers in India

Researchers conducted a randomized evaluation to test the impact of a cell phone-based monitoring system on the delivery of government-issued payments for farmers in Telangana, India. The system significantly improved the likelihood of farmers ever receiving their payments as well as receiving them...

Diffusing New Seeds through Social Networks in Indian Village Economies

The researcher conducted a randomization in rural Odisha in India, by comparing adoption of a new seed variety through farmer-to-farmer networks in one half as benchmarked by door-to-door sales of the same seed. Trading between farmers leads to substantial under-adoption of agricultural technology...

The Indirect Effects of a Campaign Against Electoral Violence in Nigeria

Researchers conducted a randomized evaluation in Nigeria to determine whether a campaign against electoral violence could spread through social networks to affect the perceptions and behaviors not only of the individuals targeted by the campaign but also others to whom they have social ties. The...

Farmers and the fear of crime: Improving agricultural productivity through farm protection in Kenya

Julian Dyer
In Kenya, researchers matched farmers with subsidized, trained watchmen to evaluate the effect of improved farm security on farmers’ decision-making, agricultural productivity, and conflict with neighbors. Security was shown to increase and in response, farmers made different cropping, time use, and...

The Impact of Social Program Targeting Strategies on Reported and Actual Asset Ownership in Indonesia

Researchers partnered with the Government of Indonesia to conduct a randomized evaluation that tested whether adding questions on flat-screen televisions and cellphone SIM cards to a targeting census would change people’s reporting and actual purchases of those items. The findings suggest that while...

The Impact of Sustained Cognitive Effort on Student Performance in India

Researchers evaluated the impact of practicing sustained cognitive activity on cognitive endurance and school performance in Lucknow, India. Students that spent additional time engaging in sustained cognitive effort received higher grades in all of their classes, improved their performance on tests...

The Impact of a Quiz-Style Information Campaign on Covid-19 Prevention in the United States

Researchers are measuring the impact of a quiz-style information campaign on people’s learning and adherence to Covid-19 health protocols. This study is part of a three-country research in the United States, Ghana, and Zambia program aiming to generate evidence on the best strategies to effectively...