“…Competence-based vocational education aims to bridge economic demands and individual learning needs of students in order to stimulate the development and integration of students' knowledge, skills and attitudes (Brockman, Clarke, Mèhaut, & Winch, 2008). However, in competence-based curricula, much explicit attention is paid to the development of vocational skills while explicit attention to the development of knowledge is often neglected (Biemans et al, 2009;Schaap, De Bruijn, Van der Schaaf, & Kirschner, 2009;Tillema, Kessels, & Meijers, 2000). This is remarkable, since personal knowledge, which is a combination of different types of subjective knowledge, is a prerequisite for vocational competence and forms the basis for adequate performance (Billett, 2001;Eraut, 1994).…”