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Assessing mental workload and situation awareness in the evaluation of real-time, critical user interfaces

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dc.contributor.advisor Jensen, Carlos
dc.creator Strawn, Jordan J.
dc.date.accessioned 2010-07-13T15:43:17Z
dc.date.available 2010-07-13T15:43:17Z
dc.date.copyright 2010-06-04
dc.date.issued 2010-07-13T15:43:17Z
dc.identifier.uri http://hdl.handle.net/1957/16571
dc.description Graduation date: 2010 en
dc.description.abstract While there are many ways to evaluate a user interface design, the user's mental workload and situation awareness (SA) are particularly important considerations in the supervisory control of safety-critical systems. Typically, operators of these systems must monitor high-volume, time-sensitive status information. Interface design for this domain can be challenging and should consider both workload and SA, because presenting too much information can lead to cognitive overload. For highly automated systems, operator underload and poor SA are also potential issues. This study reviewed subjective and objective techniques for assessing workload and SA, and analyzed the suitability of each. In recommending a suite of measures, we sought general applicability to the real-time, critical application domain, but we focused particularly on next-generation multi-modular reactor control rooms. Based on a human factors experiment in which each participant monitored and controlled multiple simulated reactors, we recommend the NASA-TLX instrument and a chest-band heart rate monitor for assessing mental workload. For the assessment of SA, we recommend using eye gaze data. In support of summarizing the results of user interface evaluation along multiple dimensions (e.g., workload, SA, user error), we propose that these inter-related constructs be presented in a single, standardized, task-based format. en
dc.language.iso en_US en
dc.subject mental workload en
dc.subject situation awareness en
dc.subject user interface evaluation en
dc.subject eye tracking en
dc.subject heart rate monitoring en
dc.subject human factors in nuclear power plants en
dc.subject.lcsh User interfaces (Computer systems) -- Design en
dc.subject.lcsh Automation -- Human factors en
dc.subject.lcsh Nuclear power plants -- Control rooms -- Human factors en
dc.subject.lcsh Situational awareness en
dc.title Assessing mental workload and situation awareness in the evaluation of real-time, critical user interfaces en
dc.type Thesis/Dissertation en
dc.degree.name Master of Science (M.S.) in Computer Science en
dc.degree.level Master's en
dc.degree.discipline Engineering en
dc.degree.grantor Oregon State University en
dc.contributor.committeemember Burnett, Margaret M.
dc.contributor.committeemember Metoyer, Ronald A.
dc.contributor.committeemember Lien, Mei-Ching
dc.contributor.committeemember Scott, Michael H.

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