A comparison of rating scale, secondary-task, physiological, and primary-task workload estimation techniques in a simulated flight task emphasizing communications load.

摘要: Sixteen potential metrics of pilot mental workload were investigated regarding their sensitivity to communication load and intrusion on primary-task performance. A moving-base flight simulator was used present three cross-country flights. The flights varied only in the difficulty communications requirements. Rating scale measures obtained immediately postflight; all others taken over a 7-min segment task. results indicated that both Modified Cooper-Harper Scale Multi-descriptor sensitive changes load. secondary-task measure time estimation physiological pupil diameter also sensitive. As expected, those direct communicative performance load, whereas aircraft control not, attesting task specificity such measures. Finally, analysis revealed no differential interferen...