Individual differences in performance, workload, and stress in sustained attention: Optimism and pessimism

0191-8869/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.paid.2009.04.019 * Tel.: +1 407 823 0920; fax: +1 407 823 5862. E-mail address: [email protected]. The relationship between optimism, pessimism and vigilance was investigated as a function of the degree to which different display formats facilitated performance across types of perceptual discrimination. Pessimism was associated with display and task dependent differences in workload, stress, and coping strategy. Optimism by pessimism interaction was observed for stress (Tense Arousal). Neither trait was associated with performance differences. Pessimism, but not optimism, was related to coping strategy independent of experimental condition. The results of this study were more consistent with a coping/cognitive resources perspective on optimism and pessimism than with an explanation based on learned helplessness theory. Further, the data supported the contention that optimism and pessimism are correlated but distinct constructs. The results also underscore the importance of considering both task parameters and person characteristics when evaluating the performance, workload, and stress of sustained attention. 2009 Elsevier Ltd. All rights reserved.