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CHI
2008
ACM

There's always one!: modelling outlying user performance

14 years 4 months ago
There's always one!: modelling outlying user performance
Informal analysis of many usability tests suggests that there is regularly one participant that is substantially slower than all the others. Moreover, such outliers are more extreme and more frequent than would be predicted by a normal distribution. We propose using a rational model to explain the outliers and the work described here begins to parameterise the model based on empirical data to provide accurate analyses of user performance. This prediction appears to be correct and the model begins to reflect the outlying performance. Moreover, by using an executable model, we believe that it could be used in future as an analytical tool to help designers improve usability for those users who are struggling the most. Keywords Outliers, modelling, user performance, population distribution ACM Classification Keywords
Julie Schiller, Paul A. Cairns
Added 30 Nov 2009
Updated 30 Nov 2009
Type Conference
Year 2008
Where CHI
Authors Julie Schiller, Paul A. Cairns
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