“…Information-processing theories suggest that the possession and activation of relevant knowledge enables a learner to encode new experiences with a high level ofefficiency.Within the appropriate domain, a knowledgeable learner is able to employ highly effective acquisition strategies such as organisation, chunking, and elaboration (Ornstein & Naus, 1985). Knowledgeable learners are able to assimilate relatively high levels of information without suffering overload effects such as interference in memory processing (Charness, 1976), since they process more information, at a deeper processing level, and in less time (Gagne, Bell, Yarbrough, & Weidemann, 1985). For example, existing knowledge enables a reader to integrate sentences and paragraphs quickly and in an efficient manner in order to construct higher level mental models-that is, the 'big picture' (Fincher-Kiefer, Post, Greene, & Voss, 1988).…”