Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 98 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

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Impact of Customized Information and Mediation on Labor Court Settlement Rates in Mexico

Researchers conducted two randomized evaluations to test the impacts of providing customized information on predicted case outcomes or conciliation services on labor court settlement rates in Mexico. Both interventions nearly doubled the immediate settlement rate, but only when the plaintiff was...

Using Technology to Improve Direct Benefit Transfer in India

Eric Dodge
Charity Troyer Moore
Can using technological innovations for monitoring improve the administrative implementation of social protection programs? In partnership with the Ministry of Rural Development in two states in India, researchers conducted a randomized evaluation of a new internet- and mobile-based management and...

The Impact of Reducing Tax Rates and Strengthening Enforcement on Revenue Collection in the DRC

In partnership with the Provincial Government of Kasaï-Central in the Democratic Republic of Congo, researchers conducted a randomized evaluation during the 2018 property tax collection campaign to test the impact of lower property tax rates and stronger tax enforcement on revenue collection...

The Role of the VAT for Tax Enforcement

The Value Added Tax (VAT) system, which generates a paper trail on transactions between firms, facilitated tax enforcement by spreading the impact of enforcement measures up the production chain in a study with over 400,000 firms in Chile.

Does Campaign Spending Work in the United States?

In partnership with candidates, researcher Alan Gerber conducted five randomized evaluations in two states to measure the effect of campaign mailings on vote shares. The results suggest that incumbent spending has a negligible effect on vote share, whereas challenger spending was effective.

The Effects of Canvassing, Phone Calls, and Direct Mail on Voter Turnout in the United States

Researchers examined the effects of personal canvassing, phone calls, and direct mail on voter turnout shortly before the 1998 general election in the US city of New Haven. Personal canvassing had a far greater influence on voter participation than three pieces of professionally crafted mail...

Do Phone Calls Increase Voter Turnout in the United States?

Researchers measured the impact of receiving phone calls on registered voters’ likelihood of voting in general elections in the United States. The study found that non-partisan, get-out-the-vote (GOTV) phone calls had no effect on voter turnout.

Self-Prophecy Effects and Voter Turnout in the United States

Anton Orlich
Jennifer K. Smith
Researchers contacted registered voters in a New England town by telephone and asked a portion of these voters to predict whether or not they would vote. This allowed researchers to use a randomized evaluation to measure the impact of making a prediction about future voting behavior on actual voting...