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Research
Principal research interests are in the area of human factors/ergonomics, including studies of human information processing, decision-making, motor control, and human machine systems. Studies are both analytical and experimental and use quantitative modeling of human performance characteristics, capabilities, and limitations in various task situations in order to provide a proper match between the operator and his or her tasks.
Additional areas of work include the application of ergonomics to workstation
design, categorical data analysis, safety, and the traditional industrial
engineering area of methods engineering and work measurement. Work is
both theoretical and applied, with applications relevant to real industrial
settings.
Research Laboratory
- Human Factors
Research focuses on human motor control of positioning tasks, reaction time for multiple stimuli (inputs), tracking tasks, and psychophysical processes. A digitizer-PC-timer unit is used for automated data collection and analysis of discrete arm movement tasks typical of manufacturing assembly operations. Additional equipment includes instruments for making certain physiological measurements and for measuring work environment factors. The development of the power law of motor control and of human choice reactions resulted from studies conducted in the lab.
Selected Publications
"Another Generalized Measure of Information." Perceptual and Motor Skills, vol. 85, pp. 464-466, 1998.
"Another Look at Hick-Hyman's Reaction Time Law." In Contemporary Ergonomics 1998: Proceedings of the Annual Conference of the Ergonomics Society, Cirencester, UK, pp. 572-576, 1998.
"On Difference-Based Summary Measures." Perceptual and Motor Skills, vol. 87, pp. 1379-1384, 1998.
"Measurement of Interobserver Agreement Using a Standard: Measure Formulation and Statistical Inferences." In Proceedings of the 1997 IEEE International Conference on Systems, Man, and Cybernetics, pp. 1787-1790, 1997.
"Generalized Divergence and Gibbs' Inequality." In Proceedings of the 1997 IEEE International Conference on Systems, Man, and Cybernetics, pp. 1979-1801, 1997.
"Square-Root Formula for Choice Reaction Time." Perceptual and Motor Skills, vol. 83, pp. 475-478, 1996.
"Coefficients of Variations for Nominal and Ordinal Categorical Data." Perceptual and Motor Skills, vol. 80, pp. 843-847, 1995.
"Comment on the Coefficient of Ordinal Variation." Perceptual and Motor Skills, vol. 81, pp. 621-622, 1995.
"The Paternity of the Power Law of Human Motor Control." Perceptual and Motor Skills, vol. 76, p. 277, 1993.
"Reaction Time and Stimulus Information." In Designing for Everyone, Y. Queinnec and F. Daniellou, Eds., London: Taylor & Francis, pp. 457-459, 1991.