Sander van der Linden (pictured) is a social psychologist in the Department of Psychology at the University of Cambridge where he directs the Cambridge Social Decision-Making Laboratory. Prior to this, he held academic positions at Princeton University and Yale University. He was named a Rising Star by the Association for Psychological Science, received the SAGE Young Scholars Award from the Society for Personality and Social Psychology and the Sir James Cameron Medal for the Public Understanding of Risk from the Royal College of Physicians. Jon Roozenbeek is an ESRC postdoctoral fellow at the Department of Psychology at the University of Cambridge, where he works on misinformation, vaccine hesitancy and online extremist recruitment.