Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 96 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

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Increasing Menstrual Hygiene Awareness to Reduce School Dropout among Adolescent Girls in Madagascar

Julieta Vera
Duncan Webb
Researchers are conducting a randomized evaluation to test the impact of raising awareness about menstrual hygiene on adolescent girls' school retention in Madagascar.

Are Rainwater Harvesting Techniques Profitable for Small-Scale Farmers? The Adoption and Impact of RWH Techniques in Niger

In Niger, researchers conducted a randomized evaluation to test the impact of providing training and conditional or unconditional cash transfers on farmers’ adoption and use of an environmental technology, their resulting land use, agricultural production and profitability, and labor allocation.

The Impact of Artificial Intelligence on Learning in Brazil

Lycia Lima
Flávio Riva
Researchers evaluated the learning impacts of using AI systems to score and comment on essays written for Brazil’s national post-secondary admission exam. In schools where AI technology was introduced, teachers were able to provide more frequent individualized feedback to students, and students’...

Closing the Word Gap with Big Word Club: Evaluating the Impact of a Tech-Based Early Childhood Vocabulary Program

Researchers evaluated the Big Word Club, a classroom-based digital learning program designed to increase the vocabulary of young children, to assess the program’s impact on children’s receptive vocabulary. Researchers found that the Big Word Club increased students’ knowledge and retention of words...

Reducing Job Search Costs with an SMS-based Messaging App in Rural Tanzania

Dahyeon Jeong
The researcher conducted a randomized evaluation in rural Tanzania to determine the impact of an SMS-based messaging app that connects agricultural workers and employers on wages. Results found that the SMS-based messaging app reduced wage spread within villages–meaning employers paid a wage closer...

Measuring Competition Through Subsidies in Sierra Leone's Cocoa Market

Tristan Reed
In order to measure the level of competition among traders in Sierra Leone’s cocoa market, researchers conducted a randomized evaluation to test the impact of delivering subsidies to cocoa traders on prices that traders paid to cocoa farmers. While the bonus payments did not affect the prices paid...

Encouraging Adoption of Rainwater Harvesting Tanks Through Collateralized Loans in Kenya

In partnership with Nyala Dairy Cooperative, researchers evaluated the impact of offering asset collateralized loans for rainwater harvesting tanks on both credit access for dairy farmers and profitability for the lender. Using the tanks as loan collateral led to higher take-up of loans by farmers...

Scaling a Bundled Village Input Fair to Build Markets for Agricultural Inputs in Mali

Partnering with Innovations for Poverty Action, Soro Yiriwaso, and UNRIA, researchers conducted a randomized evaluation to test the impact of scaling the bundled VIF model from the previous study on the purchase and use of inputs by small-scale farmers as well as the profitability of agro-dealers.