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SUMMARY:An evaluation of integrated zooming and scrolling on small screens
  - Phil Tuddenham + Keith Vertanen
DTSTART:20060202T110000Z
DTEND:20060202T123000Z
UID:TALK4693@talks.cam.ac.uk
CONTACT:Alan Blackwell
DESCRIPTION:Jones\, S.\, Jones\, M.\, Marsden\, G.\, Patel\, D.\, Cockburn
 \, A. (2005). An evaluation of integrated zooming and scrolling on small s
 creens. International Journal of Human-Computer Studies 63(3)\, 271-303.\n
 \nAvailable (from Science Direct) at http://tinyurl.com/96sq6\n\nOriginal 
 abstract:\n\nSpeed-dependent automatic zooming (SDAZ) has been proposed fo
 r standard desktop displays as a means of overcoming problems associated w
 ith the navigation of large information spaces. SDAZ combines zooming and 
 panning facilities into a single operation\, with the magnitude of both fa
 ctors dependent on simple user interaction. Previous research indicated dr
 amatic user\nperformance improvements when using the technique for documen
 t and map navigation tasks. In this paper\, we propose algorithmic extensi
 ons to the technique for application on small-screen devices and present a
  comparative experimental evaluation of user performance with the system a
 nd a normative scroll-zoom-pan interface. Users responded positively to th
 e system\, particularly in relation to reduced physical navigational workl
 oad. However\,\nthe reduced screen space reduced the impact of SDAZ in com
 parison to that reported in previous studies. In fact\, for one-dimensiona
 l navigation (vertical document navigation) the normative interface out-pe
 rformed SDAZ. For navigation in two dimensions (map browsing) SDAZ support
 s more accurate target\nlocation\, and also produces longer task completio
 n times. Some SDAZ users became lost within the information space and were
  unable to recover navigational context. We discuss the reasons for these 
 observations and suggest ways in which limitations of SDAZ in the small-sc
 reen context may be overcome.\n\nRubric for the reading group: \nEveryone 
 attending is expected to read the paper in advance. Please bring a copy wi
 th you\, preferably annotated with interesting reflections. The format of 
 discussion will be a brief invited introduction/critique by two members of
  the group\, followed by general discussion and informal mixing. 
LOCATION:Seminar Room FW11\, Computer Laboratory
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