RAFIV is a cognitive usability method that is based on the label-following heuristic found in the exploratory learning literature. This paper describes the empirical evidence and theoretical foundation for the RAFIV method, a five-stage model that describes a user's cognitive steps as they perform a task. The contributions of this method to the usability literature are discussed, as well as a comparison between RAFIV and other methods such as GOMS and the Cognitive Walkthrough.
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