“…Most emphasis has been directed toward the usability of the system, particularly in terms of the location of information, programming, and issues relating to standardization and training (Charlton, 1995;Joseph, Jahn, Nendick, & St. George, 1999;Joseph & Jahn, 2000;Williams, 1998Williams, , 1999Wreggit & Marsh, 1998). Relatively less emphasis has been directed toward the psychological dimensions of the use of GPS and, in particular, its impact on pilots' decision making (Casner, 2004(Casner, , 2005Johnson, Wiegmann, & Wickens, 2005;O'Hare, Owen, & Wiegmann, 2001).…”