How do beliefs about race, class, and health behaviors affect health policy opinions? Analysis of vignette experiments embedded in a nationally representative survey shows that cues about the behavior of sick individuals exert a more powerful effect on health policy opinions than do explicit...

Because the introduction of genetic testing into clinical medicine and public health creates concerns for the welfare of individuals affected with genetic conditions, those individuals should have a role in policy decisions about testing. Mechanisms for promoting participation range from...

Despite the popularity and widespread implementation of school feeding programmes, evidence of their impact on school participation and nutritional status is mixed. In this study we evaluate feeding programmes in three districts of the Lao People's Democratic Republic. Feeding modalities...

Despite the popularity and widespread implementation of school feeding programs, evidence on the impact of school feeding on school participation and nutritional status is mixed. This study evaluates school feeding programs in three northern districts of the Lao People's Democratic Republic (Lao...

We present a pre-registered experiment testing the effects of three, high-payoff (up to $50,000) vaccine regret lotteries in Philadelphia. In each drawing, residents of a randomly selected “treatment” zip code received half of the 12 lottery prizes (boosting their chances to 59-98x those of...

Many Americans fail to get life-saving vaccines each year, and the availability of a vaccine for COVID-19 makes the challenge of encouraging vaccination more urgent than ever. We present a large field experiment (N=47,306) testing 19 nudges delivered to patients via text message and designed to...

Despite the popularity and widespread implementation of school feeding programs, evidence on the impact of school feeding on school participation and nutritional status is mixed. This study evaluates school feeding programs in three northern districts of the Lao People's Democratic Republic (Lao...

This paper was developed for World Bank task team leaders (TTLs) and teams designing results-based financing (RBF) programs in family planning (FP). It explores the rationale for introducing such incentives based on insights from classical and behavioral economics, to respond to supply- and...

A major focus of debate about rationing guidelines for COVID-19 vaccines is whether and how to prioritize access for minority populations that have been particularly affected by the pandemic, and been the subject of historical and structural disadvantage, particularly Black and Indigenous...