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Roger Marsh

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Publications by Roger Marsh (bibliography)

1994

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Kramer, Arthur, Tham, Mingpo, Konrad, Christopher, Wickens, Christopher D., Lintern, Gavan, Marsh, Roger, Fox, Julianne and Merwin, David (1994): Instrument Scan and Pilot Expertise. In: Proceedings of the Human Factors and Ergonomics Society 38th Annual Meeting 1994. pp. 36-40.

“A study was performed to investigate the correspondence between flight experience and instrument scan strategies. Seventeen student and twenty one instructor pilots flew two instrument flight missions with each mission being composed of eight distinct flight segments. The segments varied in the number of flight parameters that were to be modified including changes in heading, airspeed and altitude as well as double and triple combinations of changes in these parameters. All of the flight segments were flown under strict time constraints. Discriminant analyses were employed to determine the extent to which performance, control and eye scan measures could be used to distinguish among three groups of pilots; student pilots, low time instructors, and high time flight instructors. Performance measures alone were not adequate for discriminating among these groups of pilots, possibly because the maneuvers were relatively simple to fly. However, when both performance measures and eye scan measures were employed discrimination accuracies improved dramatically, ranging from 77% to 98% in the more complex maneuvers. Eye scan measures were also useful in diagnosing deficiencies in student flight strategies such as the over-reliance on a subset of flight instruments.”

1989

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Wickens, Christopher D., Marsh, Roger, Raby, Mireille, Straus, Susan, Cooper, Russell S., Hulin, Charles L. and Switzer, Fred (1989): Aircrew Performance as a Function of Automation and Crew Composition: A Simulator Study. In: Proceedings of the Human Factors Society 33rd Annual Meeting 1989. pp. 792-796.

“In an experiment designed to examine the effect of crew composition and automation level on flight performance, fifty pilot-copilot crews flew a simulated instrument flight mission between three Michigan cities. Half of the crews were of homogeneous composition (both low or both high time), while half were heterogeneous consisting of one senior high time member and one junior low time member. Within each group, roughly half flew xxx with automated flight control and the other half flew manually. The flight was disrupted by periodic instrument failures. Results indicated that automation improved flight performance and lowered workload. While there was no overall difference in performance between homogeneous and heterogeneous crews, the latter group appeared to benefit more from the advantages that automation had to offer. The results are discussed in terms of the effect of automation on cockpit authority gradients, the role of flight experience, and of crew communications.”

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