Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 97 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

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Man feed ballot into ballot box while volunteers help voters in background

Radio Public Service Announcements and Voter Participation Among Native Americans in the United States

Donald Green
Eline A de Rooij

Can media campaigns increase voter turnout among those underrepresented in the electorate? Researchers randomly assigned areas covered by Native American radio programming to either receive or not receive targeted radio messaging encouraging listeners to vote in the 2008 and 2010 US elections. The...

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The Impact of Offering Awards on Health Worker Learning in Zambia

Researchers in Zambia introduced different kinds of awards and information on performance rankings into a year-long training for community health workers to evaluate their impact on how much trainees learned. They found that awards focused on offering recognition and improving trainees’ status and...
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Do Robotic Calls from Credible Sources Influence Voter Turnout or Vote Choice?

Alan Gerber
James G. Gimpel
Donald Green
Daron R. Shaw
Two students walking: one's jacket reads 'Peking U"

Non-Coercive Mobilization in State-Controlled Elections in China

Donald Green
Mei Guan

Applying Behavioral Insights to Improve Tax Enforcement in Poland

Nina Mazar
Roberto Claudio Sormani
In partnership with the Polish Tax Office, researchers conducted a nation-wide randomized evaluation to test the impact of sending tax enforcement letters with behavioral messages on tax compliance among delinquent taxpayers. The results indicate that behavioral letters significantly improved tax...
Row of empty polling stations

Social Pressure and Voter Turnout in the United States

Alan Gerber
Donald Green
Christopher Larimer
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Understanding the Connection Between Party Affiliation, Partisanship, and Political Beliefs in the United States

Alan Gerber
Gregory A. Huber
Ebonya Washington
A Community Health Worker teaches nutrition to members of local households

Advertising Higher Earnings during Recruitment Processes for Community Service Providers in Uganda

Erika Deserranno
Researchers conducted a randomized evaluation to test the impact of expected earnings on candidates’ perception of a community health worker position in Uganda, and on the resulting size and composition of the applicant pool. Fewer socially motivated participants applied when advertised wages were...