About the Author
Paul Emmelkamp is a Professor of Clinical Psychology at the University of Amsterdam and a registered clinical psychologist and psychotherapist. His research in this area focuses on the aetiology and treatment of anxiety disorders, posttraumatic stress disorder and OCD and the role of co-morbidity. He is the founding editor of Clinical Psychology & Psychotherapy and editor of BMC-Psychiatry. He is the author of Evidence-based treatment for Alcohol and Drug Abuse (with E. Vedel, 2006) and of Personality Disorders (with J. H. Kamphuis, 2007). Thomas Ehring is a Professor of Clinical Psychology and Psychotherapy at the University of Munster, Germany, as well as a registered clinical psychologist and Director of the Centre for PTSD Treatment at Munster University. He has authored many journal articles as well as contributing chapters to several books including Cognitive Behavioral Theories in Clinical Practice (2009).