In face-to-face communication, the talkers attempt to communicate smoothly by sending and receiving non-verbal information, such as interpersonal distance and facial expression as well as verbal information. On the other hand, in the non-face-to-face communication, exchange of non-verbal information is limited. In this study, for the purpose of designing a comfortable communication space using avatar, focusing on interpersonal distance of avatar chat, we investigate the personal space in the virtual space. Therefore, we have developed an experimental system in which the distance between the avatars can be changed by the users during a chat, and performed the experiment. As a result of the experiment, the tendency personal space in virtual space is similar to the personal space in real space. However personal space varies depending on the relationship with the partner in the face-to-face communication, it doesn’t tend to vary in the virtual space using the proposed system.
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