Stefan G. Hofmann is the Alexander von Humboldt Professor for Translational Clinical Psychology at the Philipps-University Marburg, Germany, and professor of psychology in the Department of Psychological and Brain Sciences at Boston University. He has an actively funded research program studying various aspects of emotional disorders with a particular emphasis on anxiety disorders and cognitive behavioral therapy. His many prestigious professional honors include the Alexander von Humboldt Research Award, the Humboldt Professorship (the highest German research award) and the Aaron T. Beck Award for Significant and Enduring Contributions to the Field of Cognitive Therapy by the Academy of Cognitive Therapy. Dr. Hofmann is a fellow of the AAAS, APA, APS and ABCT and served as president of various national and international professional societies, including the Association for Behavioral and Cognitive Therapies and the International Association for Cognitive Psychotherapy. He was also an adviser to the DSM-5 Development Process and a member of the DSM-5 Anxiety Disorder Sub-Work Group. For the past six years, Dr. Hofmann has been named a Highly Cited Researcher by Thomson Reuters. He is editor of COGNITIVE THERAPY AND RESEARCH and has published more than 400 peer-reviewed journal articles and 20 books, including AN INTRODUCTION TO MODERN CBT (Wiley-Blackwell) and EMOTION IN THERAPY (Guilford Press).