Dr Debbie Joffe Ellis is a licensed psychologist (Victoria, Australia) and mental health counselor (New York), and is affiliated with several major psychological associations and societies − including being a Member of the Australian Psychological Society, and an International Affiliate Member of the American Psychological Association.

Dedicated to her husband, the great pioneering and remarkable psychologist Albert Ellis PhD, they worked together for several years giving public presentations and professional trainings on Rational Emotive Behavior Therapy (REBT), as well as collaborating on writing and research projects, until his death in 2007. She continues to present, practice and write about his groundbreaking approach of REBT.

She currently has a private practice in New York City, and also delivers lectures, workshops and seminars throughout the U.S.A. and across the globe.