Master in Psychology and Pedagogical Sciences at the University of Leuven, Belgium (1985) and PhD in Psychology and Pedagogical Sciences at the University of Leiden, The Netherlands (2002).
From 1987 till 1998 working for the Flemish Autism Association, first as home trainer for families with a child with autism, later as director of the home training centre and finally as trainer / lecturer.
Since 1998 working as autism consultant / lecturer /trainer at Autisme Centraal.
Chief Editor of “Autisme Centraal”, bi-monthly magazine of Autisme Centraal.
President of the editorial board of the Belgian-Dutch Journal of Special Education, Child Psychiatry and Clinical Psychology.
Published more than 15 books and several articles on autism, a.o. “This is the title: on autistic thinking” (2001), “I am Special: handbook for psycho-education” (2000, revised edition 2013), and “Autism as context blindness” (2012), a book than won several awards in the USA.