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      The Effects of Number-related Factors on Entry Performance

      Author(s): , , , ,

      Publication date (Print):

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

      Conference theme: BCS Human Computer Interaction Conference (HCI 2014)

      Conference date: 9 - 12 September 2014

      Keywords: Number entry, number-related factors, entry errors, user performance

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          Abstract

          Number entry is ubiquitous in user interface (UI) design, and in many applications — such as finance, aviation, healthcare — here, mitigating errors is critical. This paper examines the effects of factors such as the type of number (e.g., integer or decimal), number length (i.e., short or long) and display position (i.e., near or far) on entry errors. Until now, these factors have not been explored together. Using a touch-based numeric keypad, we found that number length influenced the probability of committing errors, while the position of presentation did not. Number type impacted user-corrected errors but not uncorrected errors. Number length, number type and display position affected input timings.

          The findings provide implications for the design of both number representations (e.g., decimal point appearance) and the sociotechnical systems that surround them (e.g., training practice).

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          Most cited references 11

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          Investigating touchscreen typing: the effect of keyboard size on typing speed

           Ben Shneiderman,  DOREEN REVIS,  JANET SWATSKI … (1993)
          Article 0 comments Cited 11 times – based on 0 reviews     Review now
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            Standing at a kiosk: effects of key size and spacing on touch screen numeric keypad performance and user preference.

             Keith Hiszem,  H Colle (2004)
            Touch screen input keys compete with other information for limited screen space. The present study estimated the smallest key size that would not degrade performance or user satisfaction. Twenty participants used finger touches to enter one, four or 10 digits in a numeric keypad displayed on a capacitive touch screen, while standing in front of a touch screen kiosk. Key size (10, 15, 20, 25 mm square) and edge-to-edge key spacing (1, 3 mm) were factorially combined. Performance was evaluated with response time and errors, and user preferences were obtained. Spacing had no measurable effects. Entry times were longer and errors were higher for smaller key sizes, but no significant differences were found between key sizes of 20 and 25 mm. Participants also preferred 20 mm keys to smaller keys, and they were indifferent between 20 and 25 mm keys. Therefore, a key size of 20 mm was found to be sufficiently large for land-on key entry.
            Article 0 comments Cited 9 times – based on 0 reviews     Review now
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              Planning and the user interface: the effects of lockout time and error recovery cost

               KENTON O'HARA,  STEPHEN J. PAYNE (1999)
              Article 0 comments Cited 7 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                Huawei Tu
                Patrick Oladimeji
                Yunqiu Li
                Harold Thimbleby
                Chris Vincent
                Conference
                Publication date: September 2014
                Publication date (Print): September 2014
                Pages: 246-251
                Affiliations
                FIT Lab, University of Swansea

                Singleton Park, Swansea, U.K.
                UCL Interaction Centre

                Gower St, London. U.K.
                Article
                DOI: 10.14236/ewic/HCI2014.39
                Copyright statement: © Huawei Tu et al. Published by BCS Learning and Development Ltd. Proceedings of the 28th International BCS Human Computer Interaction Conference (HCI 2014), Southport, UK
                License:

                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/

                Conference name: Proceedings of the 28th International BCS Human Computer Interaction Conference (HCI 2014)
                Conference acronym: HCI
                Conference number: 28
                Conference location: Southport, UK
                Conference date: 9 - 12 September 2014
                Conference sponsor: Electronic Workshops in Computing (eWiC)
                Conference theme: BCS Human Computer Interaction Conference (HCI 2014)
                Product
                Product Information: 1477-9358BCS Learning & Development
                Self URI (journal page): https://ewic.bcs.org/
                Categories
                Series title: Electronic Workshops in Computing

                Data availability:

                ScienceOpen disciplines: Applied computer science, Computer science, Security & Cryptology, Graphics & Multimedia design, General computer science, Human-computer-interaction

                Keywords: Number entry, user performance, number-related factors, entry errors

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