Marc D. Gentzler

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OBJECTIVE The primary purpose of this experiment was to gain a greater understanding of the utilization of working memory when interacting with a speech-enabled interactive voice response (IVR) system. BACKGROUND A widely promoted guideline advises limiting IVR menus to five or fewer items because of constraints of the human memory system, commonly citing(More)
OBJECTIVE These ergonomic evaluations analyze the threat of musculoskeletal injuries primarily due to awkward and extreme postures across two post-fire tasks and a patient care task. PARTICIPANTS The participants were firefighters and emergency medical technicians (EMTs) in an urban U.S. fire department. METHODS Ergonomic tools used for the evaluation(More)
Driving is one of the most complex tasks that people perform on a regular basis. Driving places major demands on human perceptual, cognitive, and motor capabilities and so age-related declines in these capabilities negatively affect driving performance. Given that driving largely involves the processing of visual information that changes rapidly over time,(More)
Driving while distracted is a critical and unwavering problem in the United States leading to numerous injuries and fatalities each year. While increasing legislation and developing technological interventions strive to ensure we only focus on driving, individuals still drive distracted. We surveyed college-aged adults to examine the factors that influence(More)
Several factors are considered in car accident analysis. Human factors research has shown that different perceptual and cognitive factors influence driving performance, leading to improvements in vehicle and road design. This case study provides a deeper understanding of the potential influence of major perceptual and cognitive variables on driving(More)
Driving is one of the most complex tasks that humans perform on a regular basis, placing significant demands on human perceptual, cognitive, and motor capabilities, so age-related declines in these capabilities negatively affect driving performance. Although older adults create a risk on the road because of their high crash rates, it is important to note(More)
Restaurant employees must deal with loud noise, busy environments, difficult customers, heavy, awkward, sharp, and hot objects, repetitive motions, and stress on various joints, all of which can lead to fatigue, sudden accidents, and longterm musculoskeletal injury. The goal of this case study was to assess the risk of injuries and accidents from conducting(More)
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