An in-flight study to assess short-term workload was set up to investigate the problem of drawing conclusions from a variety of experimental measures in a complex task situation. Several implications are pointed out, such as dealing with mutually different outcomes, the designation of artifacts, and the problem of formulating final conclusions without the (a priori) availability of a method for evaluating other methods. An experimental program based on normal approach conditions for transport aircraft is outlined. The considered measures include pilot and safety pilot ratings (McDonnell 10-point rating scale, SWAT 3x3 rating matrix), measures of the pilot's heart rate, and measures reflecting control activity and task performance. The usefulness of two (pilot-aircraft) model-based methods (using the HRA and PROCRU computer programs) was examined. The experimental results show the necessity of the use of a set of different measures to guarantee a reliable assessment. Pros and cons of different measures are discussed. A strategy dealing with the formulation of final conclusions based on the outcomes of a variety of measures is considered.
In-Flight Investigation of Workload Assessment Techniques for Civil Aircraft Operations
1987
132 pages
Report
No indication
English
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