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Critical review of the book “Gaze in Human–Robot Communication” : Edited by Broz, Lehman, Mutlu & Nakano in Current Topics, 81, 2015 by John Benjamins

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Judging crowds’ size by ear and by eye in virtual reality

Content Provider	Springer Nature Link
Author	Taffou, Marine Ondřej, Jan O’Sullivan, Carol Warusfel, Olivier Viaud Delmon, Isabelle
Copyright Year	2016
Abstract	Judging the size of a group of people is an everyday task, on which many decisions are based. In the present study, we investigated whether judgment of size of different groups of people depended on whether they were presented through the auditory channel, through the visual channel, or through both auditory and visual channels. Groups of humanoids of different sizes (from 8 to 128) were presented within a virtual environment to healthy participants. They had to judge whether there was a lot of people in each group and rate their discomfort in relation to the stimuli with Subjective Units of Distress. Our groups of 96 and 128 virtual humans were judged as crowds regardless of their sensory presentation. The sensory presentation influenced participants’ judgment of virtual human group size ranging from 8 to 48. Moreover, while the quantity judgments in the auditory condition increased linearly with the group size, participants judged the quantity of people in a logarithmic manner in the two other sensory conditions. These results suggest that quantity judgment based on auditory information in a realistic context may often involve implicit arithmetic. Even though our participants were not phobic of crowds, our findings are of interest for the field of virtual reality-based therapy for diverse disorders because they indicate that quantity judgment can potentially be altered in a sensory-specific manner in patients with fear of crowds.
Starting Page	57
Ending Page	65
Page Count	9
File Format	PDF
ISSN	17837677
Journal	Journal on Multimodal User Interfaces
Volume Number	11
Issue Number	1
e-ISSN	17838738
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-08-01
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Quantity judgment Sensory modality Auditory-visual Crowd Virtual reality Humanoids User Interfaces and Human Computer Interaction Signal,Image and Speech Processing Image Processing and Computer Vision
Content Type	Text
Resource Type	Article
Subject	Signal Processing Human-Computer Interaction

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