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    Optimizing Usability Studies by Complementary Evaluation Methods

    HCI 2014 - Sand, Sea & Sky - Holiday HCI

    Proceedings of the 28th International BCS Human Computer Interaction Conference (HCI 2014)

    Southport, UK, 9 - 12 September 2014


    Martin Schmettow, Cedric Bach & Dominique Scapin



    This paper examines combinations of complementary evaluation methods as a strategy for efficient usability problem discovery. A data set from an earlier study is re-analyzed, involving three evaluation methods applied to two virtual environment applications. Results of a mixed-effects logistic regression suggest that usability testing and inspection discover rather disjunctive sets of problems. A resampling analysis reveals that mixing inspection and usability testing sessions in equal parts finds 20% more problems with the same number of sessions.


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