Graduate Thesis Or Dissertation
 

Directional Decisions in an Egress task: Systematic manipulation of the relative speed, onset, and onset asynchrony of neighboring pedestrians

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/t148fq40z

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  • Examining directional decisions has proven easier in experiments with fish than in humans. With virtual reality, it is now easier to investigate directional decision-making behavior in humans. This remote virtual study examined directional decisions in 109 participants after watching virtual pedestrians, walking at different speeds and entering at different times, exit through a pair of doorways. If the relative speed of neighboring pedestrians drives directional decisions, participants should be more likely to follow the faster pedestrian, as shown in our previous real world and immersive virtual reality studies. However, if the relative onset of neighboring pedestrians drives following behavior, participants should be more likely to follow the earliest onset pedestrian. I also investigated whether the effect of speed might vary depending on onset, and whether the effect of onset depends on onset asynchrony (SOA). These hypotheses were tested using a 3 (speed) x 3 (onset) x 2 (SOA) within-subjects design. Participants selected either the ‘z’ key to choose the left door exit or the ‘m’ key to choose the right door exit. Using the generalized estimating equation approach to fit a repeated-measures logistic regression, I found that speed was a significant predictor of directional decisions (p < .001). Onset was also a significant predictor of directional decisions (p < .001), and the effect of onset was amplified by a longer SOA (p < .001). However, the effect of speed did not appear to be influenced by onset. These results characterize the influence of visual cues on pedestrian egress choices.
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  • 30 pages

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