ABSTRACT

Cognitive workload is one of the critical human factors in aircrew and' air traffic controller performance (Hartel & Hartel, 1995; Hartel, Smith, & Prince, 1991; Prince, Hartel, & Salas, 1993). Error-proneness increases when mental workload exceeds an individual's cognitive capacity (Hlirtel & Hartel, 1997). For this reason, understanding and measuring cognitive workload is a fundamental aspect of aviation research programs around the world (cf. Wickens, Mavor, & McGee, 1997).