Johannes M. Cladder*, Ph.D., was born in 1944. He studied clinical psychology in Groningen from 1963-1969. His extensive professional work includes books about behavior therapy with children and Rogerian parent courses and many articles on Gestalt therapy and hypnotherapy. Currently he is Associate Professor at the Institute for Developmental Psychology at the State University at Utrecht Holland.
* Bios are listed here as they last appeared in the latest publication of the Journal of Regression Therapy.