Research findings suggest that the value added by the video channel of currently available video conferencing technology is limited to the creation of a social presence of the other party. Almost all clinical information exchange takes place on the audio channel, while the interpersonal interactions (nods, blinks, facial expressions, and body language), which are so important in a face-to-face meeting, may not be adequately captured by the video. Several of our case studies are presented which suggest that, consistent with the social presence role for video, low-cost videophones may be effectively substituted for expensive ISDN-based systems in many mental health applications.
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