2015-now. Professor of Statistical Analysis of Incomplete Data

2001-now Head, Dept of Statistics, TNO Quality of Life, Leiden

2005-2014 Professor of Applied statistics in prevention (Bijzonder Hoogleraar), Utrecht University

1991-2001 Statistical consultant, TNO Quality of Life, Leiden

1991 Assistant professor (universitair docent), Leiden University

1990 Ph.D. Social Sciences, Utrecht University

1986 M.A. Psychology, Leiden University