Willem Jan Heiser (born 19 January 1949) is a Dutch social scientist who was Professor of Psychology, Statistical Methods and Data Theory at the Leiden University between 1989 and 2014.
Willem Jan Heiser (born 19 January 1949) is a Dutch social scientist who was Professor of Psychology, Statistical Methods and Data Theory at the Leiden University between 1989 and 2014. (en)
Willem Jan Heiser (born 19 January 1949) is a Dutch social scientist who was Professor of Psychology, Statistical Methods and Data Theory at the Leiden University between 1989 and 2014. (en)