Testing a walkthrough methodology for theory-based design of walk-up-and-use interfaces
CHI '90 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Heuristic evaluation of user interfaces
CHI '90 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Software Requirements Analysis for Real-Time Process-Control Systems
IEEE Transactions on Software Engineering
User interface evaluation in the real world: a comparison of four techniques
CHI '91 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
A cost-effective evaluation method for use by designers
International Journal of Man-Machine Studies
Developing user interfaces: ensuring usability through product & process
Developing user interfaces: ensuring usability through product & process
The phenotype of erroneous actions
International Journal of Man-Machine Studies
Usability inspection methods
The cognitive walkthrough method: a practitioner's guide
Usability inspection methods
Safeware: system safety and computers
Safeware: system safety and computers
Interactive System Design
Evaluating usability methods: why the current literature fails the practitioner
interactions - The digital muse: HCI in support of creativity
What do usability evaluators do in practice?: an explorative study of think-aloud testing
DIS '06 Proceedings of the 6th conference on Designing Interactive systems
Temporal aspects of tasks in the user action notation
Human-Computer Interaction
Damaged merchandise? a review of experiments that compare usability evaluation methods
Human-Computer Interaction
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There are a range of different usability evaluation methods: both analytical and empirical. The appropriate choice is not always clear, especially for new technologies. In-car navigation systems are an example of how multimodal technologies are increasingly becoming part of our everyday life. Their usability is important, as badly designed systems can induce errors resulting in situations where driving safety may be compromised. In this paper we use a study on the usability of a navigation device when the user is setting set up an itinerary to investigate the scope of different classes of approach. Four analytical and one empirical techniques were used to evaluate the usability of the device. We analyse the results produced by the two classes of approach --- analytical versus empirical --- and compare them in terms of their diversity and the insight they provide to the analyst in respect to the overall usability of the system and its potential improvement. Results suggest a link between genotypes and the analytical class of approach and phenotypes in the empirical class of approach. We also illustrate how the classes of approach complement each other, providing a greater insight into the usability of a system.