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Advances in Human-Computer Interaction
Volume 2013, Article ID 931698, 17 pages
http://dx.doi.org/10.1155/2013/931698
Research Article

Enhanced Cognitive Walkthrough: Development of the Cognitive Walkthrough Method to Better Predict, Identify, and Present Usability Problems

Division of Design and Human Factors, Department of Product and Production Development, Chalmers University of Technology, 412 96 Gothenburg, Sweden

Received 11 October 2012; Accepted 12 August 2013

Academic Editor: Kerstin S. Eklundh

Copyright © 2013 Lars-Ola Bligård and Anna-Lisa Osvalder. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To avoid use errors when handling medical equipment, it is important to develop products with a high degree of usability. This can be achieved by performing usability evaluations in the product development process to detect and mitigate potential usability problems. A commonly used method is cognitive walkthrough (CW), but this method shows three weaknesses: poor high-level perspective, insufficient categorisation of detected usability problems, and difficulties in overviewing the analytical results. This paper presents a further development of CW with the aim of overcoming its weaknesses. The new method is called enhanced cognitive walkthrough (ECW). ECW is a proactive analytical method for analysis of potential usability problems. The ECW method has been employed to evaluate user interface designs of medical equipment such as home-care ventilators, infusion pumps, dialysis machines, and insulin pumps. The method has proved capable of identifying several potential use problems in designs.