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The Effects of Task Structure on Time-sharing Efficiency and Resource Allocation OptimalityA distinction was made between two aspects of time sharing performance: time sharing efficiency and attention allocation optimality. A secondary task technique was employed to evaluate the effects of the task structures of the component time shared tasks on both aspects of the time sharing performance. Five pairs of dual tasks differing in their structural configurations were investigated. The primary task was a visual/manual tracking task which requires spatial processing. The secondary task was either another tracking task or a verbal memory task with one of four different input/output configurations. Congruent to a common finding, time-sharing efficiency was observed to decrease with an increasing overlap of resources utilized by the time shared tasks. Research also tends to support the hypothesis that resource allocation is more optimal when the time shared tasks placed heavy demands on common processing resources than when they utilized separate resources.
Document ID
Document Type
Conference Paper
Tsang, P. S.
(Illinois Univ. Urbana-Champaign, IL, United States)
Wickens, C. D.
(Illinois Univ. Urbana-Champaign, IL, United States)
Date Acquired
August 12, 2013
Publication Date
September 1, 1984
Publication Information
Publication: NASA. Ames Research Center 20th Ann. Conf. on Manual Control, Vol. 2
Subject Category
Man/System Technology And Life Support
Accession Number
Funding Number(s)
CONTRACT_GRANT: N00014-79-C-0658
Distribution Limits
Work of the US Gov. Public Use Permitted.
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