Leslie S. Greenberg, PhD, is Distinguished Research Professor Emeritus of Psychology and founder and former director of the Emotion-Focused Therapy Clinic at York University in Toronto, Canada. 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.