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      Visual Fidelity of Video Prototypes and User Feedback: A Case Study

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      Proceedings of HCI 2011 The 25th BCS Conference on Human Computer Interaction (HCI)

      Human Computer Interaction

      4 - 8 July 2011

      Video prototype, video prototype fidelity, feedback on fidelity, visual refinement

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          Abstract

          This paper addresses the debate regarding the respective merits of high and low fidelity prototypes, in the domain of video prototyping. Video prototyping is a popular tool for interface designers. Despite this, there is practically no research reported to date examining the fidelity of the design representation that the video prototype should manifest. We report a case study where the same design concept was rendered on video in two formats with differing degree of visual fidelity: animated paper cut-outs (low visual fidelity) versus a video with real actors, edited to simulate computer output (high visual fidelity). A two-pronged comparative evaluation was carried out: a between-subjects questionnaire survey, consisting of AttrakDiff, open-ended questions completed by 99 participants, and semi-structured qualitative interviews with 9 participants. The results did not reveal any differences regarding the amount or quality of feedback one should expect from a low or a high fidelity video. These results lead us to suggest that the paper cut out animation is a valid prototype that should be explored more by interaction designers for obtaining early user feedback at low cost.

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          Most cited references 6

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          The influence of prototype fidelity and aesthetics of design in usability tests: effects on user behaviour, subjective evaluation and emotion.

          An empirical study examined the impact of prototype fidelity on user behaviour, subjective user evaluation and emotion. The independent factors of prototype fidelity (paper prototype, computer prototype, fully operational appliance) and aesthetics of design (high vs. moderate) were varied in a between-subjects design. The 60 participants of the experiment were asked to complete two typical tasks of mobile phone usage: sending a text message and suppressing a phone number. Both performance data and a number of subjective measures were recorded. The results suggested that task completion time may be overestimated when a computer prototype is being used. Furthermore, users appeared to compensate for deficiencies in aesthetic design by overrating the aesthetic qualities of reduced fidelity prototypes. Finally, user emotions were more positively affected by the operation of the more attractive mobile phone than by the less appealing one.
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            What can you Learn from a Low-Fidelity Prototype?

             Robert Virzi (1989)
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              Does the Fidelity of Software Prototypes Affect the Perception of Usability

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                Author and article information

                Contributors
                Conference
                July 2011
                July 2011
                : 139-144
                Affiliations
                Eindhoven University of Technology

                User-System Interaction, Industrial Design, P.O.Box 513

                5600 MB Eindhoven, NL
                Article
                10.14236/ewic/HCI2011.39
                © B. Dhillon et al. Published by BCS Learning and Development Ltd. Proceedings of HCI 2011 The 25th BCS Conference on Human Computer Interaction, Newcastle Upon Tyne, 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 2011 The 25th BCS Conference on Human Computer Interaction
                HCI
                25
                Newcastle Upon Tyne, UK
                4 - 8 July 2011
                Electronic Workshops in Computing (eWiC)
                Human Computer Interaction
                Product
                Product Information: 1477-9358BCS Learning & Development
                Self URI (journal page): https://ewic.bcs.org/
                Categories
                Electronic Workshops in Computing

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