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What-If Analysis on the Evaluation of User Interface Usability

What-If Analysis on the Evaluation of User Interface Usability
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Author(s): Saulo Silva (University of Minho, Portugal), Mariana Carvalho (University of Minho, Portugal) and Orlando Belo (University of Minho, Portugal)
Copyright: 2020
Pages: 22
Source title: Interactivity and the Future of the Human-Computer Interface
Source Author(s)/Editor(s): Pedro Isaias (Information Systems and Technology Management School, The University of New South Wales, Australia) and Katherine Blashki (Victorian Institute of Technology, Australia)
DOI: 10.4018/978-1-7998-2637-8.ch003


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While interactive systems have the potential to increase human work performance, those systems are predisposed to usability problems. Different factors might contribute to these problems during the interaction process and as result, the decision-making process might be compromised. This work uses decision support system methods and tools to assist in the analysis of the usability of a university library website, measuring the constructs of effectiveness, efficiency, and learnability. The pilot study involved thirty-five subjects, and after collecting data, a multidimensional view of the data is created and discussed. Later, a What-if analysis is used to investigate the impact of different scenarios on system-use. The work has the potential to assist designers and system administrators at improving their systems.

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