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Studying Gaze Behavior to Compare Three Different Hazard Perception Tasks

Studying Gaze Behavior to Compare Three Different Hazard Perception Tasks ObjectiveThe aim of the current study was to compare the traditional, verbal, and motoric tasks regarding their contributions to hazard perception measurement.BackgroundTraditional hazard perception tasks require the participants to respond to filmed traffic conflicts in an imprecise way, such as by pressing a button. More sophisticated tasks include either verbal specification or motoric localization of the perceived hazards. The present study investigated the participants’ gaze behavior when they were provided with an identical set of traffic animations but were instructed to perform one of three types of hazard perception tasks.MethodIn an eye tracking study, 69 drivers were shown animated traffic scenarios and instructed to perform the traditional (press button), verbal, or speeded motoric localization hazard perception task. Eye tracking revealed whether and when the participant had fixated a certain hazard cue.ResultsThe participants in the traditional task group were slower to fixate emerging hazards, but quicker to respond to them than the participants of the verbal and the motoric groups. As a specific benefit, the verbal task differentiated between different types of failures.ConclusionAdditional verbal or speeded motoric localization tasks seem to have increased the participants’ alertness when watching the animations. The verbal task provides valuable additional information regarding the participants’ performance. To approximate real-life hazard perception ability, it is recommended that researchers and practitioners use a combination of different hazard perception tasks for assessment and training. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Human Factors The Journal of the Human Factors and Ergonomics Society SAGE

Studying Gaze Behavior to Compare Three Different Hazard Perception Tasks

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References (44)

Publisher
SAGE
Copyright
© 2019, Human Factors and Ergonomics Society
ISSN
0018-7208
eISSN
1547-8181
DOI
10.1177/0018720819873462
Publisher site
See Article on Publisher Site

Abstract

ObjectiveThe aim of the current study was to compare the traditional, verbal, and motoric tasks regarding their contributions to hazard perception measurement.BackgroundTraditional hazard perception tasks require the participants to respond to filmed traffic conflicts in an imprecise way, such as by pressing a button. More sophisticated tasks include either verbal specification or motoric localization of the perceived hazards. The present study investigated the participants’ gaze behavior when they were provided with an identical set of traffic animations but were instructed to perform one of three types of hazard perception tasks.MethodIn an eye tracking study, 69 drivers were shown animated traffic scenarios and instructed to perform the traditional (press button), verbal, or speeded motoric localization hazard perception task. Eye tracking revealed whether and when the participant had fixated a certain hazard cue.ResultsThe participants in the traditional task group were slower to fixate emerging hazards, but quicker to respond to them than the participants of the verbal and the motoric groups. As a specific benefit, the verbal task differentiated between different types of failures.ConclusionAdditional verbal or speeded motoric localization tasks seem to have increased the participants’ alertness when watching the animations. The verbal task provides valuable additional information regarding the participants’ performance. To approximate real-life hazard perception ability, it is recommended that researchers and practitioners use a combination of different hazard perception tasks for assessment and training.

Journal

Human Factors The Journal of the Human Factors and Ergonomics SocietySAGE

Published: Dec 1, 2020

Keywords: situation awareness; eye movements; tracking; perceptual-motor performance; response time

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