It is widely assumed that the success of a computer system is related to its usability, yet there is little data to support this supposition. The concept of usability as it may apply to system success is reviewed. A modern, broad definition of interface usability is proposed comprising utility, attitude and performance factors in relation to specific users, tasks and environments. Appropriate usability metrics are devised to compare interface designs in controlled experiments. The experiments are conducted in the context of Banking and the Internet. A clear and consistent relationship between attitudes toward usability and preference quality ratings for interfaces is demonstrated and extends to usage intentions in the eBanking context. Further, the relationship between preferences, attitudes and performance measures are explored and findings support previous research: that preference does not always follow performance, and that attitudes and performance (subjective and objective measures of usability) are not always directly related. Levels of utility in the Banking interface are also explored. Finally, interface characteristics highly associated with preferences and usage intentions for Internet Banking services are highlighted.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:663624 |
| Date | January 2008 |
| Creators | Weir, Catherine Sarah |
| Publisher | University of Edinburgh |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://hdl.handle.net/1842/13223 |
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