To investigate which strategies are most effective at preventing drunk driving and reducing traffic accidents, researchers partnered with the Rajasthan Police in India to evaluate an anti-drunk driving program using sobriety testing checkpoints. Overall, the anti-drunk driving program was effective in reducing traffic deaths and accidents, with these reductions driven entirely by police stations that implemented surprise checkpoints.

Researchers investigated whether access to information about local labor laws could improve firms’ understanding of the law. They found that free access to an existing subscription service that provided this information improved firms’ understanding of labor regulations and resulted in large employment gains.

In partnership with Simón de Cirene, a Chilean non-profit organization, researchers evaluated the impact of providing role models and personalized assistance through various delivery methods on the business outcomes of micro-entrepreneurs. One year after the program ended, household income increased for individuals assigned to receive a role model or personalized assistance.

Altruistic individuals may hesitate to give when they doubt the quality of a charity, but knowing that a high-profile donor supports the charity might alleviate these concerns. Researchers evaluated the impact of publicizing a matching grant from the Bill and Melinda Gates Foundation (BMGF) on charitable giving to Technoserve, a US-based poverty-alleviation charity. Identifying the matching donor as BMGF increased the number of donors compared to mentioning an anonymous matching donor and compared to making no mention of a matching donor. However, the average size of donations remained the same regardless of the publicizing method used.

Small and medium enterprises are thought to be an important source of innovation and employment in developing countries, but entrepreneurs face a number of barriers to expanding their businesses. In Colombia, researchers are examining the impact of a combination of training, mentorship, and networking interventions on business outcomes.

Researchers used a randomized evaluation to test how local leaders influence the voluntary provision of public goods. They solicited contributions for environmental education books, which all members of the community would be able to access, and varied whether leaders made public contributions. They found that when elected community leaders were asked to set an example, they increased the amount they gave and induced followers to contribute more as well.

In Malawi, researchers tested the impact of a subsidized tree planting program and tested whether allocating contracts randomly or through self-selection resulted in better program outcomes. Self-targeting outperformed random allocation of contracts in terms of tree survival and mitigated increases in land clearing and labor shortages.

The collection of delinquent fines is a massive public administrative challenge. In the United Kingdom for instance, unpaid court fines amounted to more than £600 million in 2011. Managing noncompliant accounts and dispatching bailiffs to collect fines in person is costly. Researchers used a randomized evaluation to test the effectiveness of mobile phone text messaging as a relatively inexpensive alternative method to encourage people to pay their outstanding fees. Text message reminders significantly increased average payment of fines, and were particularly effective when they addressed the recipient by name.

Researchers conducted a randomized evaluation in Rwanda to examine how important aspects of cultural practice do or do not change in the wake of exposure to media messages delivered through a radio soap opera drama. While the radio program had little effect on changing individual beliefs and attitudes, it did have a strong impact on listeners’ willingness to express dissent and the ways they resolved communal problems.

In a series of three evaluations throughout the United States, researchers evaluated the effect of group composition on individual participants’ political views. They found little evidence that the ideological and demographic complexion of the group influenced post-discussion opinions.

Researchers studied hiring discrimination among major employers in the United States by sending fictional resumes, with varying demographic information, to determine whether certain characteristics would lead to different follow-up contact rates. Employers were less likely to contact resumes with distinctively Black names than resumes with distinctively white names.