Real-Time Workload Assessment as a Foundation for Human Performance Augmentation
While current military systems are functionally capable of adaptively aiding human operators, the effectiveness of this capability depends on the availability of timely, reliable assessments of operator states to determine when and how to augment effectively. This paper describes a response to the technical challenges associated with establishing a foundation for reliable and effective adaptive aiding technologies. The central component of this approach is a real-time, model-based classifier and predictor of operator state on a continuous high resolution (0-100) scale. Using operator workload as a test case, our approach incorporates novel methods of integrating physiological, behavioral, and contextual factors for added precision and reliability. Preliminary research conducted in the Air Force Multi Attribute Task Battery (AF_MATB) illustrates the added value of contextual and behavioral data for physiological-derived workload estimates, as well as promising trends in the classification accuracy of our approach as the basis for employing adaptive aiding strategies.
KeywordsWorkload Augmentation Human Performance Modeling and Simulation Physiological Measurement
Unable to display preview. Download preview PDF.
- 2.Wilson, G.F., Eggemeier, F.T.: Physiological measures of workload in multi-task environments. In: Damos, D. (ed.) Multiple-task Performance, pp. 329–360. Taylor & Francis, London (1991)Google Scholar
- 3.Schnell, T., Keller, M., Macuda, T.: Application of the Cognitive Avionics Tool Set (CATS) in Airborne Operator State Classification. In: Augmented Cognition International Conference, Baltimore, MD (2007)Google Scholar
- 6.Galster, S.: Sense-Assess-Augment: A Taxonomy for Human Effectiveness. In: Proceedings of the Seventeenth International Symposium on Aviation Psychology. Dayton, OH (in press) Google Scholar
- 7.Miller, W.D.: The U.S. Air Force-developed adaptation of the Multi-Attribute Task Battery for the assessment of human operator workload and strategic behavior (Tech. Rep. No. AFRL-RH-WP-TR-2010-0133) (2010)Google Scholar
- 9.Hart, S.G., Staveland, L.E.: Development of NASA-TLX (Task Load Index): Results of Empirical and Theoretical Research. In: Peter, A.H., Najmedin, M. (eds.) Advances in Psychology, vol. 52, pp. 139–183. North-Holland, Amsterdam (1988)Google Scholar