Search our database of 1023 randomized evaluations conducted by our affiliates in 86 countries. To browse summaries of key policy recommendations from a subset of these evaluations, visit the Policy Publications tab.

Displaying 1-8 of 315

Improving Electoral Integrity with Information and Communications Technology in Uganda

Clark Gibson
Danielle Jung
James D. Long

Researchers sent letters to polling stations announcing smartphone vote-tally audits to evaluate the impact of audits on electoral irregularities such as non-adherence to transparency regulations and falsified vote tallies. Relative to a comparison group, letters increased the number of polling...

The Impact of Decentralizing Education Spending on Student Learning in Senegal

Pedro Carneiro
Oswald Koussihouèdé
Nathalie Lahire
Corina Mommaerts

Researchers partnered with the Senegalese government to evaluate the impact of a decentralized school grants program on student learning. The program improved test scores overall and for girls in younger grades. The impact was stronger in schools that invested more in human resource training rather...

The Demand for and Costs of Rural Electrification in Kenya

Researchers conducted a randomized evaluation to measure the impact of offering subsidies to connect to the power grid on the demand for rural electrification in Kenya. The study finds that demand falls rapidly as connection price increases, and that supply costs are very high.

Household Water Connections in Tangier, Morocco

Researchers conducted a randomized evaluation to look at the effect of private connections in a setting where most households already had access to high quality water through public taps. They found that households had a high willingness to pay for piped water, and while home water connection had no...

Reducing Barriers to Savings in Rural Malawi

Xavier Giné
Lasse Brune

Researchers analyzed the effect of reducing barriers to saving in rural Malawi on savings behavior, investment in agricultural inputs, and consumption. They found that farmers with access to formal savings accounts preserved greater amounts of savings throughout both the harvest and planting seasons...

The Impact of Virtual and Face-to-Face Peer Networks on Innovation and Entrepreneurship in 49 Countries across Africa

Fernando Vega-Redondo
Paolo Pin
Cristiana Benedetti-Fasil
Charles Brummitt
Gaia Rubera
Drik Hovy
Tommaso Fornaciari
Peer networks are seen as important for stimulating innovation and entrepreneurship, but little is known about how the structure and composition of networks affect innovation performance. Researchers compared the effects of face-to-face and virtual peer interaction on the submission and quality of...

Powering Small Retailers: The Adoption of Solar Energy under Different Pricing Schemes in Kenya

Kenya, East Africa's largest economy, is struggling with an ageing energy infrastructure and low connectivity to the power grid. William Jack and affiliate Tavneet Suri (MIT) study the impact of off-grid solar power on small retailers in Nairobi.

Testing the Effectiveness of Payments for Ecosystem Services to Enhance Conservation in Uganda

Charlotte Stanton
Joost de Laat
Eric Lambin

In Uganda, researchers conducted a randomized evaluation to test the effectiveness of a program in which landowners were paid to not cut forest trees on their property. During the study period, landowners who were offered contracts to conserve forest cleared 4 percent of forested land, compared to 9...