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Leon Segal

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Publications by Leon Segal (bibliography)

1990

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Moray, Neville, Hart, Sandra G., Hancock, P. A., Kramer, Arthur F., Strayer, David L., Wickens, Christopher D., Segal, Leon, Raby, Mireille, Dessouky, Mohamed, Sanderson, Penelope and James, Jeffrey M. (1990): The Human Factors of Strategic Behavior. In: D., Woods, and E., Roth, (eds.) Proceedings of the Human Factors Society 34th Annual Meeting 1990, Santa Monica, USA. pp. 596-597.

1988

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Wickens, Christopher D., Harwood, Kelly, Segal, Leon, Tkalcevic, Inge and Sherman, Bill (1988): TASKILLAN: A Simulation to Predict the Validity of Multiple Resource Models of Aviation Workload. In: Proceedings of the Human Factors Society 32nd Annual Meeting 1988. pp. 168-172.

“The objective of this research was to establish the validity of predictive models of workload in the context of a controlled simulation of a helicopter flight mission. The models that were evaluated contain increasing levels of sophistication regarding their assumptions about the competition for processing resources underlying multiple task performance. Ten subjects performed the simulation which involved various combinations of a low level flight task with three cognitive side tasks, pertaining to navigation, spatial awareness and computation. Side task information was delivered auditorily or visually. Results indicated that subjective workload is best predicted by relatively simple models that simply integrate the total demands of tasks over time (r = 0.65). In contrast, performance is not well predicted by these models (r < .10), but is best predicted by models that assume differential competition between processing resources (r = 0.47). The relevance of these data to predictive models and to the use of subjective measures for model validation is discussed.”

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