During the COVID-19 epidemic, many health professionals started using mass communication on social media to relay critical information and persuade individuals to adopt preventative health behaviors. Our group of clinicians and nurses developed and recorded short video messages to encourage...

COVID-19 vaccines are widely available in wealthy countries, yet many people remain unvaccinated. Understanding the effectiveness -- or lack thereof -- of popular vaccination campaign strategies is therefore critical. In this paper, we report results from two studies that tested strategies...

"Over the last four years, world-renowned economist Thomas Piketty documented his close observations on current events in a regular column in the French newspaper Le Monde. His pen captured the rise and fall of Trump, the drama of Brexit, Macron's ascendance to the French presidency, the...