Marianne de Jong* was born in 1939, in Zwolle, Holland. She now lives with her husband and two children in Bussum, Holland. She studied pedagogy at the University of Amsterdam, clinical and developmental psychology at the State University of Utrecht from 1974 to 1981. She is a member of the Dutch Society of Hypnosis and the Dutch Society of Behavior Therapists, and the APRT. She has a practice as a psychotherapist in Bussum.
*Bios are listed here as they last appeared in the latest publication of the Journal of Regression Therapy