Abstract
Increasingly telecommunication systems have become an integral part of many professions. However, little empirical data and guidelines exist for designing telecommunication systems to facilitate decision makers in cooperative efforts in dynamic task environments. A preliminary experiment was conducted in which the subjects (all experienced in the domain concerned) were presented with video-tapes of previously recorded real-life trauma patient resuscitation. The experiment examined the subjects' ability to understand the status of the patient and resuscitation efforts shown in the video. The experiment was to simulate remote diagnosis tasks in which experts provide consultation through video linkage. The subjects were found to have a number of difficulties in achieving a full understanding. Hypotheses about the reasons that could explain these difficulties are proposed and they include (1) background noise, viewing range restriction, and insecure viewing access to remote sites (2) visual information overload due to the multiple action threads at remote sites (3) lack of adequate dynamic mental models of remote events and activities (4) lack of context information.
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