Abstract
Studies focusing on two iconic attributes, form and relative position, suggested subjects rely on form to recognise a particular icon when the form is representational. However, when form is abstract users switch from attempting to use form, to using position. Results had suggested that some degree of positional learning still occurred for subjects using representational form. However, a more in depth study of this suggestion was impossible since the standard performance measures of error rate and reaction time settled quickly into an optimal level of performance. To gain better insight into what was occurring, cursor movements were tracked, allowing pre-emptive move data to be captured. The showed that, irrespective of the type of form presented, subject learned and eventually switched to relying on position to identify the icon. More importantly, results suggest that this learning continued after the traditional measures of reaction time and error rate had reached what Jordan et al. (1991) termed experienced user performance level, or asymptote. The suggestion therefore is that traditional performance measures are perhaps not sensitive enough to measure learning at the experienced end of the learning curve, and that interface designers should thus consider ways in which to capture this potentially enlightening information which, as yet, remains unexamined.
Chapter PDF
Similar content being viewed by others
References
Jordan, P W, Draper, S W, MacFarlane, K K and McNulty, S-A. (1991) Guessability, Learnability, and Experienced User Performance. In People and Computers VI, Diaper, D. and Hamond, N. (eds. ), Cambridge University Press.
Jordan, P.W. and O’Donnell, P.J. (1992) Quantifying guessability, learnability and experienced user performance. Contemporary Ergonomics 1992, Lovesey, E.J. (ed.), London: Taylor and Francis, pp. 404–410.
Kaptelinin, V. (1993) Icon Recognition in Menu Selection: The Effect Of Practice. In INTERCHI’93 Adjunct Proceedings, Ashlund, S. et al. (eds.), ACM Press.
Moyes, J. (1995) Putting Icons in Context: The influence of Contextual Information on the Usability of Icons. Ph.D. Thesis, University Of Glasgow.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1997 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Moyes, J. (1997). Evaluating User Performance to Experienced Level and Beyond. In: Howard, S., Hammond, J., Lindgaard, G. (eds) Human-Computer Interaction INTERACT ’97. IFIP — The International Federation for Information Processing. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-35175-9_15
Download citation
DOI: https://doi.org/10.1007/978-0-387-35175-9_15
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4757-5437-7
Online ISBN: 978-0-387-35175-9
eBook Packages: Springer Book Archive