“…First, although a number of studies was carried out (since 1990) into the role of genre knowledge (Corden, 2002(Corden, , 2007Englert, Raphael & Anderson et al, 2001;Englert, Raphael & Anderson, 1992;Graham, Harris & Mason, 2005;Kos & Maslowski, 2001;Sims, 2001), results do not allow for an appraisal of its beneficial effects on writing quality. Most of the studies are so-called multicomponential studies, which means that they combine several instructional components in addition to genre knowledge (e.g.…”