Susan M. Johnson, EdD, until her death in 2024, was Professor Emeritus of Clinical Psychology at the University of Ottawa, Ontario, Canada; Distinguished Research Professor in the Marriage and Family Therapy Program at Alliant International University in San Diego; and Director of the International Centre for Excellence in Emotionally Focused Therapy. "Dr. Sue" was the pioneering innovator of emotionally focused therapy (EFT). She published widely, including acclaimed books for professionals, bestselling books for general readers, and numerous articles, book chapters, and teaching videos. Her seminal contributions to couple therapy have been recognized with the Family Psychologist of the Year Award from Division 43 of the American Psychological Association and the Outstanding Contribution to Marriage and Family Therapy Award from the American Association for Marriage and Family Therapy. She was most proud of receiving the Order of Canada, one of the country’s highest civilian honors.

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T. Leanne Campbell, PhD, is cofounder and managing partner of Campbell & Fairweather Psychology group, a multisite clinical practice in British Columbia, Canada. She is a board member of the International Center for Excellence in Emotionally Focused Therapy (ICEEFT) and an ICEEFT Certified Trainer, and serves as site coordinator for a large-scale study examining the efficacy of emotionally focused individual therapy (EFIT). Dr. Campbell is an international speaker, writer, trainer, and codeveloper of EFT-related educational programs and materials. She has coauthored several peer-reviewed articles and books on EFT, most notably the first basic EFIT text (with Susan M. Johnson), now translated into multiple languages.