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If there is a poor fit between system concepts and the way users think about the domain and task, this places a high workload on the user as they translate between their own conceptualisation and that imposed by the system. Most established user-centered evaluation methods (UEMs) focus on usability rather than utility or conceptual fit. Few UEMs encourage the analyst to step back and consider how well a system supports users’ conceptual understandings and system utility. </div> <div> </div> <div> The focus of this talk is on how to identify users’ conceptualizations of a domain ideally, prior to system implementation. If a system already exists, then it can be evaluated for how well it supports the way(s) people think. For this, it is necessary to gather verbal data from people that allows them to articulate their conceptual models in ways that are not overly constrained by existing devices but allows them to articulate taken-for-granted knowledge. Possible approaches include semi-structured interviews, contextual inquiry interviews and think-aloud protocols. I discuss how to design a study, covering choosing between different kinds of study, planning of questions and tasks, data gathering, and data analysis. I show how this approach can help identify re-design possibilities. </div> <div> </div> <div> <br/> </div> </div> </div> <div class="row lecture__section"> <h2>About this Lecture</h2> <span> <strong>Number of Slides: </strong> 35</span><br/> <span> <strong>Duration: </strong> 60 minutes </span><br/> <span> <strong>Languages Available: </strong> English</span><br/> <span> <strong>Last Updated: </strong> <span id="lecDate"></span> </span> </div> <div class="row lecture__section"> <h2>Request this Lecture</h2> <p>To request this particular lecture, please complete this <a href="https://services.acm.org/public/speakers/request_lecture.cfm?lecture_id=15790" target="_blank">online form.</a> </p> </div> <div class="row lecture__section"> <h2>Request a Tour</h2> <p>To request a tour with this speaker, please complete this <a href="https://services.acm.org/public/speakers/request_tour.cfm?lecturer_id=5423" target="_blank">online form.</a> </p> <p>All requests will be sent to ACM headquarters 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