Social and Behavioral Sciences Commons^™

Examining The Effect Of Interruptions At Different Breakpoints And Frequencies Within A Task, Sarah Anastazia Powers

Psychology Theses & Dissertations

Research on the effects of interruptions shows that they can be either costly or beneficial depending on which aspects of an interruption are manipulated. One important aspect that contributes to these conflicting results concerns when an interruption occurs. The present study explored how event segmentation theory (EST) can be used to determine optimal moments for an interruption relying on hierarchical task analysis (HTA) to identify coarse and fine event boundaries. Utilizing a 2 X 3 mixed design, undergraduate students completed a trip planning task divided into three task trials. The within-subjects factor was interruption timing, which had three levels: none, …

The Effect Of Differing Degrees Of Automation And Reliability On Simulated Luggage Screening Performance, Molly M. Liechty

Psychology Theses & Dissertations

The present work examined the effects of two types of decision support systems in a simulated luggage screening task: An input aid and an output aid. An input aid supports an operator’s information gathering. An output aid supports decision making and action selection. A Time-Accuracy Function (TAF) analysis was applied to isolate processing time from performance asymptote, which conventional performance measures such as sensitivity and response time do not distinguish one from the other. Sixty participants performed a luggage screening task unaided (manual condition), with the assistance of an input aid (spatial aid), and with the assistance of an output …

The Effects Of Automation Transparency And Reliability On Task Shedding And Operator Trust, William Everett Lehman

Psychology Theses & Dissertations

Because automation use is common in many domains, understanding how to design it to optimize human-automation system performance is vital. Well-calibrated trust ensures good performance when using imperfect automation. Two factors that may jointly affect trust calibration are automation transparency and perceived reliability. Transparency information that explains automated processes and analyses to the operator may help the operator choose appropriate times to shed task control to automation. Because operator trust is positively correlated with automation use, behaviors such as task shedding to automation can indicate the presence of trust. This study used a 2 (reliability; between) × 3 (transparency; within) …

Impact Of Electronic Flight Bag On Pilot Workload, Saravanan Suppiah

Student Works

The increase of automation in the aviation industry pose challenges to human performance. To attest this point, studies about aircraft accidents reveal that pilots’ response to automated systems are always not coherent. Research findings suggests that pilots’ interaction with automated systems in highly demanding tasks situations results in the increase in workload and if they are unable to resolve it in time, it will compromise flight safety. Therefore, in the interest to further explore the impact of automation on human factor constructs, the study aimed to investigate the impact of Electronic Flight Bag (EFB) on pilot workload. The study measured …

Effects Of Control Device And Task Complexity On Performance And Task Shedding During A Robotic Arm Task, Shelby K. Long

Psychology Theses & Dissertations

The use of robotic arms across domains is increasing, but the relationship between control features and performance is not fully understood. The goal of this research was to investigate the difference in task performance when using two different control devices at high and low task complexities when participants can shed tasks to automation. In this experiment, 40 undergraduates (24 females) used two control devices, a Leap Motion controller and an Xbox controller, to teleoperate a robotic arm in a high or low complexity peg placement task. Simultaneously, participants were tasked with scanning images for tanks. During the experiment, participants had …

Beyond 2020 Nextgen Compliance: Human Factors And Cognitive Loading Issues For Commercial And General Aviation Pilots, Mark D. Miller, Sam Holley

Publications

As previously identified by the authors, digitized flight decks have realigned SHELL model components and introduced cognitive overload con­cerns. Considering changes from implementing Next Generation air traffic management requirements in 2020, the authors assess digitized interfaces associated with cockpit displays of information integral to performance based navigation and similar operations. Focus is placed on Automatic Dependent Surveillance Broadcast, digitized communications, and expanded electronic flight bags. The ADSB (In) cockpit display will enable pilots to have flight visual awareness on aircraft, terrain, weather and hazards to flight through live satellite updates every second. Increased optical demands and cognitive loading are anticipated …

The Repairer Reporting System For Integrating Human Factors Into Sms In Aviation Maintenance, Mark D. Miller, Bettina Mrusek

Publications

Acknowledging the FAA’s well-known PEAR model, and the influence of the dirty dozen in aviation maintenance, the authors examine a tracking and reporting system that fulfills FAA requirements for safety management systems in aviation maintenance organizations. Implications and suggestions for a robust safety management system which encompasses human factors and ORM, applicable to an aviation maintenance environment are presented, with the inclusion of specific risk hazards. The resulting safety reporting system proposed addresses both consistency and reliability challenges, unique to the aviation maintenance environment. Using the four pillars of safety as a foundation, the REPAIRER strategy procedures serves as the …

Human Performance In Manufacturing Tasks: Optimization And Assessment Of Required Workload And Capabilities, Maria Chiara Leva, Lorenzo Comberti, Micaela Demichela, Alberto Caimo

Conference papers

This paper discusses some examples where human performance and or human error prediction was achieved by using a modified version of the Rasch model(1980), where the probability of a specified outcome is modelled as a logistic function of the difference between the person capacity and item difficulty. The model needs to be modified to take into account an outcome that may not be dichotomous and o take into account the interaction between two macro factors: (a) Task complexity: that summarises all factors contributing to physical and mental workload requirements for execution of a given operative task & (b) Human capability: …

Ground Vehicle Driving Aids: Assessing Driver Workload And Performance In Degraded Visual Environments, Kayla Riegner

Dissertations, Master's Theses and Master's Reports

With degraded visual environments being a current priority to the Army, several research programs have been initiated to develop a complete sensor-to-soldier systems to allow operators to see through DVE conditions while conducting ground vehicle tactical operations. To enable indirect-driving maneuverability and threat detection in degraded visual environments (DVEs), CCDC’s ground DVE program developed and tested a range of sensors and driver aid display systems. Six candidate driving aids were identified and tested in three simulator studies and two field tests to examine the effect of driving aids on driver workload and performance in different visibility conditions. The simulator-based testing …

A Change In The Dark Room: The Effects Of Human Factors And Cognitive Loading Issues For Nextgen Tracon Air Traffic Controllers, Mark D. Miller, Sam Holley, Bettina Mrusek, Linda Weiland

Publications

By 2020 all aircraft in United States airspace must use ADS-B (Automatic Dependent Surveillance-Broadcast) Out. This is a key component of the Next Generation (NextGen) Air Transportation System, which marks the first time all aircraft will be tracked continuously using satellites instead of ground-based radar. Standard Terminal Automation Replacement System (STARS) in the Terminal Radar Approach Control (TRACON) is a primary NextGen upgrade where digitized automation/information surrounds STARS controllers while controlling aircraft. Applying the SHELL model, the authors analyze human factors changes affecting TRACON controllers from pre-STARS technology through NextGen technologies on performance. Results of an informal survey of STARS …

Fatigue Identification And Management In Flight Training: An Investigation Of Collegiate Aviation Pilots, Flavio A. C. Mendonca Ph.D.

Publications

Pilot fatigue is a significant hazard affecting flight operations;

• Generally the product of one or more factors: Disrupted or lack of sleep;
• Inadequate food and or fluid intake;
• Mental;
• and Physical fatigue.

Previous studies have focused on military and commercial flight operations;

• Little to nothing has been done to investigate fatigue identification & management by general aviation pilots!