Background
Hellendoorn, Johanna was born on July 28, 1939 in Utrecht, The Netherlands. Son of Gerard Herman Hellendoorn and Johanna Elisabeth Treffers.
Hellendoorn, Johanna was born on July 28, 1939 in Utrecht, The Netherlands. Son of Gerard Herman Hellendoorn and Johanna Elisabeth Treffers.
Doctorate in Psychology, University Utrecht, 1966. Doctor of Philosophy, University Leiden, The Netherlands, 1987.
Assistant University Utrecht, 1962-1966, assistant professor, 1966-1975. Associate professor University Leiden, since 1975. Director Graduate Course Play Therapy, Leiden, 1977-1998, Graduate School Special Education, Leiden, since 1993.
President board editor Child and Adolescent, 1991-1997.
Member Vereniging voor Kinder en Jeugd Psychotherapie (founder, board member 1972-1980), Nederlandse Vereniging van Pedagogen en Onderwyskundigen (board ethics since 1993), International Toy Research Association, Association for Play Therapy.
Married Albert Hendrik Karssiens, March 25, 1991.