“…Our development efforts in this respect focus on (a) familiarization materials; (b) the design of extremely simple user interfaces, screens, and sequences; and (c) understanding the cognitive demands presented by interacting with the computer. Research on computer screen reading speed (Lunn & Banks, 1986;Mills & Weldon, 1987), the graphic design of text on the computer screen (Kang & Muter, 1989), and user control of the computer's sequencing and other orientation functions (Wright & Lickorish, 1988) (Fischer, 1989;Heckel, 1983;Liddle, 1989;McDonald & Schvaneveldt, 1988) stressing the importance of the match between the user's mental models and the design of the computer-delivered materials guides development and future research.…”