“…Alesandrini (2002) explains that from an instructional viewpoint, graphics can facilitate learning: a) when used to represent actual people, places, or things; b) when the graphic helps to simplify difficult, complex, and/or abstract material (e.g., a company's organizational chart) ; or c) when used as an analogical bridge between familiar, already learned materials and unfamiliar, or to be learned materials (e.g., a graphic of a familiar truck to facilitate learning the functions of an unfamiliar red blood cell). Repeatedly, studies have shown that graphics can benefit comprehension, insight, and learning when properly selected and used within instructional materials (e.g., the review by Tversky, Morrison & Betrancourt, 2002) Mayer and his colleagues (e.g., Mayer, 2001;2008, Mayer, Hegarty, Mayer & Campbell, 2005Mayer & Moreno, 2002;2003;Mayer & Sims, 1994) have repeatedly examined the impact of graphics on learning as they developed their cognitive theory of multimedia learning. A key assumption within that theory is that as humans encounter new information, separate verbal and visual information processing systems are used.…”