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Subjective ratings of usability: Reliable or ridiculous?

Most usability professionals have used rating scales at some point in our careers and most of us have seen usability test participants who struggle with product use and then rate the experience as "extremely easy". Some give up on rating scales as a measure of usability. Others realize that only measuring user performance (and not collecting subjective ratings of usability) fails to capture important aspects of the user experience. This panel of experts will explain some of the theory and practice of collecting reliable ratings of usability. Controversies abound in this important topic in our field, and the panelists represent a wide range of perspectives. This panel promises to be both lively and practically enlightening. Panel (90 minute) by Keith S Karn, Alex Little, Greg Nelson, Jeff Sauro, Jurek Kirakowski, William Albert, Kent Norman Methods & Skills for General