Influence of crowd behaviour on estimates of biological motion speed

Thornton, Ian, Vuong, Quoc and Mather, George (2018) Influence of crowd behaviour on estimates of biological motion speed. In: European conference on Visual Perception, 26-30 August 2018, Trieste, Italy.

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Item Type:Conference or Workshop contribution (Poster)
Item Status:Live Archive


Does the behaviour of to-be-ignored “crowds” influence the perception of target walker speed? Baseline trials presented two point-light walkers that moved at different speeds. The task was to report whether the red or green walker was faster. On experimental trials, the task was the same, but targets were surrounded by 5 red and 5 green figures that made two task-irrelevant crowds. On speed-congruent trials, the faster target had a colour-consistent crowd that moved at an even faster pace. On speed-incongruent trials, the colour-consistent crowd moved at a slower pace. There were three possible outcomes 1) Crowd speed-congruency could have no influence; 2) Averaging of target and crowd speed might lead to faster responses on speed-congruent trials; 3) Within-colour contrast between target and crowd might lead to faster responses on speed-incongruent trials. Initial results support the third outcome, suggesting that task-irrelevant crowd speed is processed, but not averaged.

Keywords:Human locomotion, speed perception, crowd behaviour
Subjects:C Biological Sciences > C850 Cognitive Psychology
Divisions:College of Social Science > School of Psychology
ID Code:33419
Deposited On:19 Oct 2018 20:31

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