Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"Subjective workload"”.
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The Effect of improvisations and Observations on Standardized Patient Encounters, Subjective Workload and Stress
… behaviors and rate their communication skills. Subjective reports of mental workload and stress were also obtained. The first study involved undergraduates interviewing for a job. Type of interview (rote and improvisational) and type of observation (passive and active) were manipulated within …
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Processing Phenomena and the Dissociation Between Subjective and Objective Workload Measures (Cognition, Automaticity, Verbal Reports)
Causes of dissociation between subjective workload assessments and objective performance were investigated. A Sternberg memory search task was utilized. Sternberg task configurations varied in the automaticity of performance, stimulus presentation rate, discernability of stimuli, and the value of …
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Comparing the Effects of Mental Workload Between Visual and Auditory Secondary Tasks During Laparoscopy
… Theory (MRT) by comparing performance and subjective workload on a visual-spatial secondary task with an auditory-spatial analog when paired with visual-spatial laparoscopic primary tasks. Two primary tasks were performed with a laparoscopic box trainer: a high workload task that consisted …
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Experimental studies of cognitively based air traffic control complexity metrics for future operational concepts
… designed to evaluate controller performance and subjective workload under the simulated operational concepts. The Time-Based Control at a Metering Fix was found to have enhanced schedule conformance, reduced operational errors and lower perceived complexity. The Dynamic Route Structure Control …
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User interface design and evaluation of a shipboard electronic warfare console
… measured by time to complete a task, errors, and subjective workload. Experiment 2 considered redesign solutions not restricted to the existing hardware or software. Although discussed frequently in the interface literature, performance differences between direct-manipulation and command-key …
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An Experimental Investigation of the Differences in Subjective Pilot Workload across Simulated and Real Flight Conditions
… was undertaken to determine the difference in workload between simulated and real flight conditions. The results from the Modified Cooper-Harper and NASA-TLX did not show significance, however, the theoretical implications from the NASA-TLX subscales were of interest. As this is the first study …
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The Dissociation of Subjective Measures of Mental Workload and Performance
Dissociation between performance and subjective measures of workload occurs when two task configurations are compared and the configuration that shows better performance is subjectively perceived as the more difficult task. According to a theory (Wickens & Yeh, 1983), dissociation occurs because …
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Application of chunking to the design of complex information displays
… classification task with reduced error rates and subjective workload. Experiment 2 was similar to Experiment 1, with the exception that participants were tasked to remember each symbol presented during a trial rather than just the symbol class names. This task required forming chunks, storing them …
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Instrument Pilot Skill Acquisition in the Early Phases of Flight Training Using an Advanced Cockpit Display System
… potential differences in learning curves and subjective workload. Workload data across trials indicated a negative linear trend, with a significantly lower level of workload on the synthetic vision display compared to conventional instruments. Levels of performance were significantly higher in …
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The effects of time of day and circadian rhythm on performance during variable levels of cognitive workload
… collected to objectively measure participants’ workload. Task demands were altered throughout the testing period to expose participants to both high and low workload conditions. Additionally, individual differences in circadian rhythm were explored by assessing participants’ circadian typology. …
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Incorporation of Traffic Collision Alert System (TCAS) Advisories on Heads-up Displays: Enhanced Pilot Response
… mounted TCAS displays had on pilot response and workload. Pilot response was evaluated by: (a) response time to a traffic advisory, and (b) number of missed traffic alerts. Workload assessment was accomplished in accordance with NASA's Task Load Index (TLX). Subjects were all licensed pilots with …
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Three-dimensional displays for commercial aircraft: A theoretical and empirical evaluation
… control actions in several dimensions and subjective workload ratings. The results of the study are evaluated both in terms of relative performance of the two displays, and in terms of the predictions of the Compatibility Proximity Principle.
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Effect of Time Pressure and Task Uncertainty on Human Operator Performance and Workload for Autonomous Aerial Vehicle Missions
… aerial vehicle operator task performance and workload. Thirty undergraduate students at Embry-Riddle Aeronautical University participated in this study. The primary task was image identification, and secondary tasks consisted of responding to events encountered in typical UAS operations. Time …
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The Effects of Eye Gaze Based Control on Operator Performance in Monitoring Multiple Displays
… times during an identification task) and subjective workload measured by the <a href="http://search.proquest.com.ezproxy.libproxy.db.erau.edu/pqdtglobal/docview/1466003187/abstract/72F7D5EDB0004527PQ/1?accountid=27203#">NASA</a>-TLX. The eye tracker under the specific experimental …
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The Effectiveness of Augmented Reality for Astronauts on Lunar Missions: An Analog Study
… accuracy. This study evaluated the usability, subjective workload, and task performance of 22 participants using the Microsoft HoloLens to complete tasks that are analogous to those completed by astronauts on a lunar mission, including navigation, rock sample collection, and maintenance tasks. …
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Effects of Vibrotactile Display Position and Shape on Extrapersonal Localization
… vibrotactile display resulted in increased subjective workload scores, regardless of shape. Results from the present study suggest a spherical handheld display may be advantageous for three-dimensional tasks; however, specific applications should be evaluated on a case-by-case basis.</p>
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A Quasi-Experimental Approach for Assessing Air Traffic Controller Workload
… imposed on the controller. The various workload methodologies and techniques were reviewed for specific workload techniques applicable to the operational environment when resources, such as time and funding, are lacking for a laboratory design. Data was collected from a live oceanic …
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The Effect of Task Load, Automation Reliability, and Environment Complexity on UAV Supervisory Control Performance
… of automation reliability on participants’ subjective trust ratings and the possible dissociation between task load and subjective workload ratings were also explored. Eighty-one Navy student pilots completed a 34:15 minute pre-scripted SCOUT scenario, during which they managed three …
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