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Researchers tested whether an informative letter campaign could reduce inappropriate prescribing of controlled substances in Medicare Part D. Letters had no detectable effect on prescribing. In ongoing work, researchers are testing alternative versions of letters.

In this study, researchers are partnering with the national electoral authority to test a range of policy interventions designed to ultimately improve poll workers’ attendance during the 2017 state elections.

Researchers sent emails to schools posing as parents of students with randomly-varied characteristics to assess if schools responded differently to different types of students. The researchers found that on average both charter and traditional public schools were less likely to respond to students...

Researchers conducted a correspondence study assessing property managers’ responses to rental listing inquiries from prospective tenants with distinctively Black, Hispanic/Latinx, or white names in the United States. Property managers were significantly less likely to respond to messages from...

Researchers measured the impact of different interest rates loan take-up, amount, and repayment rates among female clients of Compartamos Banco in Mexico. Lower interest rates led to an increase in the number of loans issued, loan amounts, and new borrowers but did not increase profits in the short...

In Nicaragua, researchers analyzed the impact of a conditional cash transfer program on the distribution of child labor within households. In households that randomly received a conditional cash transfer, older boys and boys who were behind in school spent significantly less time working each week...

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.