Search our database of 1,800+ randomized evaluations conducted by our affiliates in 96 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

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Providing Agricultural Inputs in the Democratic Republic of Congo

Sylvie Lambert
Margaux Vinez
In partnership with the Ministry of Agriculture of the Democratic Republic of Congo and the World Bank, researchers are investigating how subsidizing the cost of and access to improved seeds affects smallholder farmers’ take-up of improved seeds, their short-term agricultural productivity, and...

Property Tax Experiment in Punjab, Pakistan: Testing the Role of Wages, Incentives and Audit on Tax Inspectors' Behavior

Researchers conducted a two-year randomized evaluation of incentive schemes for tax officials in Punjab, Pakistan that found performance pay significantly increased tax revenues without harming taxpayer satisfaction.

Revealing Stereotypes about Immigrant Students to Middle School Teachers in Italy

Researchers evaluated the impact of informing middle school teachers in Italy about their implicit stereotypes towards immigrant students on end-of-year grading. Both math and literature teachers eligible to receive feedback before the end-of-the-year grading gave higher grades to immigrant students...

Secondary School Scholarships to Increase Girls' Skill Development, Empowerment, and Job Opportunities in Niger

Elise Huillery
Mathilde Sage
The Government of Niger, the National Institute of Statistics, and the World Bank partnered with researchers to evaluate the impact of secondary school scholarships for girls on skill development, empowerment, and job opportunities.

Leveraging Technology to Incentivize Student Effort in India

Using a technology-based math curriculum, researchers evaluated the impact of different incentive types—rewarding continuous effort in the classroom versus rewarding test performance—on student learning. Results indicate that effort-based incentives can be a more effective and cost-effective way of...

Books or Laptops? The Cost-Effectiveness of Shifting from Printed to Digital Delivery of Educational Content in Honduras

Rosangela Bando
Dario Romero Fonseca
Researchers partnered with the Honduran government to evaluate the impact of replacing textbooks with laptops on student learning. Using laptops resulted in no change in learning outcomes, suggesting that laptops could be a cost-effective substitute to textbooks if they can replace enough textbooks.

Improving Educational Outcomes through Online Tutoring during Schools Closures in Italy during the Covid-19 Outbreak

Researchers designed a free online tutoring program delivered by volunteer university students to test whether it could mitigate the effects of school closures during the COVID-19 outbreak. They found that the program had a positive outcome on students' learning outcomes, socio-emotional skills, and...