Issues in the Application of a Likert Scale to Measure Website Usability
Keywords:
usability, reliability of the scale, Internet banking, factorial analysisAbstract
Various types of methods can be used in website usability research, including user testing, eye tracking, and click tracking. However, the interview remains an important research method, and the questionnaire an important research tool, especially when quality measurement is being done in the context of ISO 9241-11:1998. A website's usability measurement scale should refer to utility determinants concerning a standard - such as effectiveness, efficiency and user satisfaction in the use of a given service. It should also take into account the complexity of the site's architecture. The article presents the results of scale dimensionality analysis with the application of factorial analysis with reference to the scale measuring the usability of web services offered by banks. The subsequent step is an analysis of reliability of separated, one-dimensional scales based on the α-Cronbach method.
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