Journal
COMPUTERS IN HUMAN BEHAVIOR
Volume 139, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chb.2022.107517
Keywords
Eye movements; Gaze following; Joint attention; Videoconferencing
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This study investigates how people estimate gaze direction in screen-based communication and found that estimates are more accurate in the horizontal direction, biased towards the sender's head position, and influenced by the repetition of the same sender.
Screen-based communication increasingly replaces face-to-face interactions. Gaze information is important for nonverbal communication. Therefore, we investigate how humans (receivers) estimate gaze direction of others (senders) in videoconferencing-like settings, a major example of screen-based communication. In two online experiments, receivers estimated gaze targets - which were known to the experimenters - from images of senders. As in real videoconferencing settings, receivers had no information about the geometry of the senders' setup (camera position, etc.), but had to rely on the information available on screen. In Experiment 1, we found that gaze-target estimates were more closely related to the actual target positions in the horizontal than in the vertical direction, a bias toward the sender's head position, and some advantage of presenting the same sender in succession. For Experiment 2, we created a new database of sender images, in which the senders' head position in the image and gaze-target position were systematically varied. Additionally, images of natural scenes were presented whose content served as potential gaze targets. At large, we replicated the findings of Experiment 1, and found only little effect of image content on the estimates. As gaze is an important part of intuitive human -machine interaction, our findings bear relevance beyond videoconferencing.
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