“…Performance has been shown to be impaired by a variety of stressors such as high noise (Broadbent, 1978;Poulton, 1978), increased workload (Goldstein & Dorfman, 1978), crowding (Hayduk, 1983;Schmidt & Keating, 1979), performance pressure (Baumeister, 1984;Baumeister & Steinhilber, 1984), psychological stress (Berkun, 1964), and anticipatory threat of shock (Wachtel, 1968). In operational performance studies, Villoldo and Tarno (1984) have reported that performance stress alone can cause increased errors while Idzikowski and Baddeley (1983) have reported that the time taken to complete manual tasks will double under conditions of high stress.…”