The augmented stage model of human information processing : how well do cognitive abilities drawn from the stages in the model predict concurrent task management performance? Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/8s45qc22w

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  • Research in the aviation domain, driving distractions, anesthesia administration, and nuclear power plant control rooms show that Concurrent Task Management (CTM) is a process that every human operator performs when interacting with complex environments. The need for understanding concurrent task management in a broader perspective more applicable and generalizable to different domains, led to the development of the Augmented Stage Model (ASM) of human information processing and the development of a test bed where hypotheses deriving from the augmented stage model can be tested. The ASM is an elaboration of the current Stage Model attempting to explain CTM in terms of those basic stages of human information processing and drawing on relevant, recent psychological research. One question that arises from the creation of the augmented stage model is to what degree the augmented stage model can be justified by actual human CTM performance. A corollary of this question is to what degree can CTM performance be explained by performance in simple tests that are derived directly from the stages of the model. To answer this question, 94 participants were tested on several standard cognitive tests suggested by the ASM: i.e. simple and complex reaction time, decision making, working memory, and intelligence. Performance in the cognitive tests was compared to participants' CTM performance in a multitasking simulator called the Task Management Environment (TME). The findings indicated that basic cognitive abilities, except for working memory, do not correlate significantly with CTM performance as calculated by the TME. Performance on three working memory tests was shown to predict up to 47% of the variation in CTM performance. This suggests that simple cognitive abilities do not predict CTM performance. Although, cognitive abilities might be a component of CTM, a combination of them might prove to better predict CTM performance.
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