Navigation time variability: measuring menu navigation errors

Authors:
Krystian Samp;Stefan Decker
Affiliations:
Digital Enterprise Research Institute, National University of Ireland, Galway;Digital Enterprise Research Institute, National University of Ireland, Galway
Venue:
INTERACT'11 Proceedings of the 13th IFIP TC 13 international conference on Human-computer interaction - Volume Part I
Year:
2011

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Abstract

The subject of errors in menu studies is typically limited to reporting error rates (i.e., the number of clicks missing target items) or even completely neglected. This paper investigates menu navigation errors in more depth. We propose the Navigation Time Variability (NTV) measure to capture the total severity of navigation errors. The severity is understood as time needed to recover from the errors committed. We present a menu study demonstrating use and value of the new measure.