We partnered with Walmart to test 22 nudges designed to boost vaccination rates in their pharmacies. Nudges were delivered via text message to over 650,000 Walmart pharmacy patients in the fall of 2020 and encouraged patients to visit Walmart for a flu vaccine. We demonstrate that behaviorally...

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...

Expanding on evidence that interventions to improve health are more effective when informed by behavioral science, we explore whether reminders designed to harness behavioral science principles can improve medication adherence. We conducted a randomized controlled trial with 46,581 U.S....

We introduce and evaluate the effectiveness of temptation bundling – a new, inexpensive method for simultaneously tackling two types of self-control problems by harnessing consumption complementarities. We conducted a field experiment to measure the impact of bundling instantly-gratifying but...

Governments are increasingly adopting behavioral science techniques for changing individual behavior in pursuit of policy objectives. The types of “nudge” interventions that governments are now adopting alter people's decisions without resorting to coercion or significant changes to economic...

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...

"The definitive playbook by the pioneers of Growth Hacking, one of the hottest business methodologies in Silicon Valley and beyond. It seems hard to believe today, but there was a time when Air Bnb was the best-kept secret known of travel hackers and couch surfers, Pintrest was a niche web site...

Connecting political issues of the day to people's deeply held moral convictions, a process we call political moralizing, can influence the salience and direction of their views on the issue and even the nature of their political activity. Beyond opinion change and mobilization, political...