STEFAN G. HOFMANN, PHD, is Professor of Psychology in the Department of Psychological and Brain Sciences at Boston University, where he directs the Psychotherapy and Emotion Research Laboratory. His main research focuses on the mechanism of treatment change, translating discoveries from neuroscience into clinical applications, emotion regulation strategies, and cultural expressions of psychopathology. He is the author of more than three hundred scientific publications and twenty books. He is a Highly Cited Researcher by Thomson Reuters, and has many other awards.