Sandra C. Paivio, PhD, CPsych, maintains a private practice in Toronto, Canada, provides individual psychotherapy and clinical training at the York University Psychology Clinic, and is professor emeritus in the Psychology Department at the University of Windsor. She is one of the developers of emotion-focused therapy, particularly applied to complex trauma (EFTT), has conducted clinical trials evaluating the efficacy and processes of change in EFTT, and is author of numerous publications on trauma and psychotherapy. Dr. Paivio received a Lifetime Achievement Award from the Trauma Section of the Canadian Psychological Association (2014) for her contributions to research and training in treatment for complex trauma.  Antonio Pascual-Leone, PhD, CPsych, is a professor in psychology at the University of Windsor, Canada, where he is director of the Emotion Change Lab, and is honorary professor of psychiatry at the University of Lausanne, Switzerland. He has published seminal contributions to theory and research of emotion-focused therapy and is regarded as a world expert in emotional processing. He coauthored the first edition of this book with Sandra Paivio and is writing a trans-theoretical book on changing emotion. His work is recognized by career awards from international societies as well as distinguished publication awards. He runs a private practice seeing individuals and couples.