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Interruptions can cause people to make mistakes or errors during human–com-puter interaction (HCI). Interruptions occur as an unavoidable side-effect of some important kinds of human computer-based activities, for example, (a) constantly monitor for unscheduled changes in information environments, (b) supervise background autonomous services, and (c)(More)
People have cognitive limitations that make them sensitive to interruption. These limitations can cause people to make serious mistakes when they are interrupted. Unfortunately, interruption of people is a side effect of systems that allow users to delegate tasks to active background processes, like intelligent software agents. Delegation carries the costs(More)
Current input device taxonomies and other frameworks typically emphasize the mechanical structure of input devices. We suggest that selecting an appropriate input device for an interactive task requires looking beyond the physical structure of devices to the deeper perceptual structure of the task, the device, and the interrelationship between the(More)
This paper describes HICAP, a general-purpose, interactive case-based plan authoring architecture that can be applied to decision support tasks to yield a hierarchical course of action. It integrates a hierarchical task editor with a conversational case-based planner. HICAP maintains both a task hierarchy representing guidelines that constrain the nal plan(More)
Mobile teamwork requires people to maintain good situational awareness (SA) about their real world environments. Current mobile devices are highly portable, but their user interfaces (UIs) require too deep of focus of attention to allow their users to use them and simultaneously maintain SA. As a result, some mobile practitioners have little or no access to(More)
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