Collaborative virtual environments (CVEs) are recently getting more popularity as mediums for conducting virtual interactions. Little is known, however, about the difficulties the CVE users experience during interactions in these environments and the means to make such interactions more productive. To begin to address this, we first, review the results of several CVE researchers about personal space (i.e. preferred interpersonal distance) and personal space invasion anxiety level. Second, we propose an interaction model to relief the CVE users form the feeling of anxiety by protecting their personal space from invasion, and thus enhancing the quality of these interactions in the CVEs.
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