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A Study of Computer-Based Task Performance Under Thermal Stress

Chase B., Karwowski W., Benedict M. E., Quesada P. M., Irwin-Chase H. M.

International Journal of Occupational Safety and Ergonomics

2003

Vol. 9, No. 1

5--15

A visual-visual dual computer task was designed to test the effect of the thermal environment on dual task performance. The temperatures selected for testing were 20 and 35 °C Wet Bulb Globe Temperature (WBGT). 34 volunteers were randomly assigned to 1 of the 2 temperature conditions. Individual differences in single task performance were controlled by equating the baselines of single task performance. Once individual differences in single task capacity were con-trolled, statistically significant differences in performance were demonstrated. Mean Accuracy was computed over a 1-hr testing period in each temperature condition. Participants’ mean accuracy in the 35° condition (38.18%) was substantially lower than in the 20° condition (50.88%).