This paper examines a number of ways in which a recent model of stress and human performance may be operationalized to allow experimenters and practioners to assess and predict operator capability in stressful conditions. Particular focus is given to the limits of task capability, as the model emphasizes the task itself as the primary source of stress on the performer. The importance of a model with such predictive capability forms the premise of the work, while the assessment of the present status of this and other models of stress forms the summary.
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