“…Currently, only a few studies exist that systematically examine short-and long-term effects of chemistry-specific bridging courses. The knowledge gained so far regarding the efficacy of preparatory courses for chemistry students can be traced back to studies that differ greatly in conception, duration, content and participants (Mitchell and de Jong, 1994;Chittleborough, 1998;Jones and Gellene, 2005;Botch et al, 2007;Gadbury-Amyot et al, 2009;Busker et al, 2011;Schmid et al, 2012;Dockter et al, 2017). Although the results of these studies, which are discussed in more detail in the literature review section, have provided important insights into the effectiveness of subject-related bridging courses, a difficulty in the evaluation of such courses is also shown here, since a large number of variables can be considered, which makes it difficult to compare the findings of the studies among each other.…”