The IsoMetrics usability inventory: An operationalisation of ISO 9241/10

Title:	The IsoMetrics usability inventory: An operationalisation of ISO 9241/10
Authors:	Günther Gediga , Institut für Evaluation und Marktanalysen; Brinkstr. 19; D-49143 Jeggen; Germany Kai-Christoph Hamborg , Fachbereich Psychologie , Universität Osnabrück Ivo Düntsch , Dept of Computer Science , Brock University , St Catherines, Ontario, L2S 3A1, Canada
Status:	Behavior and Information Technology 18 (1999), 151-164
Abstract:	Aiming at a user-oriented approach in software evaluation on the basis of ISO 9241 Part 10, we present a questionnaire (IsoMetrics) which collects usability data for summative and formative evaluation, and document its construction. The summative version of IsoMetrics shows a high reliability of its subscales and gathers valid information about differences in the usability of different software systems. Moreover, we show that the formative version of IsoMetrics is a powerful tool for supporting the identification of software weaknesses. Finally, we propose a procedure to categorise and prioritise weak points, which subsequently can be used as basic input to usability reviews.