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yExploring Potential Usability Gaps when Switching Mobile Phones: An Empirical Study

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Proceedings of HCI 2007 The 21st British HCI Group Annual Conference University of Lancaster, UK (HCI)

British HCI Group Annual Conference

3 - 7 September 2007

Mobile phone UI, usability evaluation, usability problems

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      Abstract

      The present study explores potential usability gaps when users switch from a familiar to an unfamiliar mobile phone interface. A within-subject experiment was performed in which nine users familiar with Sony-Ericsson T630 and nine familiar with Nokia 7250 performed tasks on both phones. On average, test subjects spent more time on finishing tasks with an unfamiliar phone than with a familiar one. For two of the four tasks, there was a significant difference in completion time between the first-time Nokia users and the first-time Sony-Ericsson users. The tasks of adding a contact to the address book and sending an SMS to a contact in the address book were performed more quickly by new Nokia users than by new Sony-Ericsson users. The subjective difficulty ranking also showed that first-time Nokia users found the new phone easier to use than first-time Sony- Ericsson users did. Hierarchical Task Analysis is used as a potential explanation, and three other theories that relate to these findings are presented: mental models, habit errors, and emotional attachment.

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            Author and article information

            Affiliations
            Software Engineering

            IT University of Gothenburg

            SE-417 56 Gothenburg
            School of Business and Informatics

            University College of Borås

            SE-501 90 Borås

            t2i Lab (www.t2i.se), CSE

            Chalmers University of Technology

            SE-412 96 Gothenburg
            Contributors
            Conference
            September 2007
            September 2007
            : 1-8
            10.14236/ewic/HCI2007.11
            © Aiko Fallas Yamashita et al. Published by BCS Learning and Development Ltd. Proceedings of HCI 2007 The 21st British HCI Group Annual Conference University of Lancaster, UK

            This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

            Proceedings of HCI 2007 The 21st British HCI Group Annual Conference University of Lancaster, UK
            HCI
            21
            Lancaster, UK
            3 - 7 September 2007
            Electronic Workshops in Computing (eWiC)
            British HCI Group Annual Conference
            Product
            Product Information: 1477-9358 BCS Learning & Development
            Self URI (journal page): https://ewic.bcs.org/
            Categories
            Electronic Workshops in Computing

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