Abstract
A cognitive task analysis (CTA) is an effective analysis technique for deriving design requirements for many task domains. However, traditional CTA approaches have limited applicability to futuristic systems because CTA approaches generally require access to subject matter experts, documentation, and previous implementations from which to draw assumptions and expertise. In this paper, we introduce a hybrid CTA framework that allows the generation of information and display requirements for futuristic systems for which no current implementations exist. This analysis technique involves a four-step process including: 1) generating a scenario task overview, 2) generating an event flow diagram, 3) generating situation awareness requirements, and 4) creating decision ladders for critical decisions. We demonstrate the effectiveness of this process through a case study in which functional and interface requirements are generated for the supervisory control of multiple, heterogeneous unmanned vehicles.
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