Researchers conducted a randomized evaluation to measure the impact of a school-based program that used a non-monetary penalty and regular monitoring to prevent adolescent tobacco use. The program reduced the probability that adolescents smoked, with effects sustained three months after the program ended. Incorporating a school competition component to the program had no further impact on smoking abstinence.

Researchers evaluated the impact of targeted mailings encouraging people with criminal records to register to vote on voting behavior in North Carolina. Mailers increased both voter registration and general election turnout among people with past criminal convictions.

Researchers, in partnership with Kimanya Ngeyo Foundation for Science and Education in Uganda, evaluated the impact of a program that trained teachers to learn like scientists: posing questions, framing hypotheses, and using real-world experience wherever possible. They explored how this approach to training teachers changes classroom dynamics, teacher pedagogy, student learning, and creativity. Researchers found positive impacts along all these dimensions.