Doctor of Medicine in Mathematics Psychology (honorary), Radboud University Nijmegen, Netherlands, 1984. Doctor of Philosophy in Mathematics Psychology, Radboud University Nijmegen, Netherlands, 1989.
Assistant professor mathematics psychology Radboud University, 1988—1990. Biostatistician Medical Research Bureau Intnat., Arnhem, Netherlands, 1990—1991. Assistant professor statistics Maastricht University, Netherlands, 1991—2005, associate professor statistics, since 2005.