Dipl.-Psych. Werner Gross is a psychological psychotherapist, coach, supervisor, and business consultant, with a private practice in Gelnhausen, Germany. He is a lecturer in psychology at the universities of Frankfurt/Main and Mainz, as well as at several training institutes for psychotherapists. From 2007 to 2024, he served as a member of the examination commission for the state exam (licensing) of psychological psychotherapists in the state of Hesse. From 1994 to 2017, he led the BDP (Professional Association of German Psychologists) working group ""Psychology of Religion – Spirituality – Psychomarket,"" and developed a criteria catalog titled ""What Makes an Alternative-Spiritual Group a Problematic Cult."" For this, he was awarded the BDP's Honorary Award in 2018. From 1996 to 1998, he was a member of the German Bundestag’s Enquête Commission on “So-called Sects and Psycho Groups.” He has published various specialist and nonfiction books on psychological topics (e.g., Psychomarket – Sects – Destructive Cults).