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Cross-User Analysis (Faulkner, Wick, 2002) Taking data from a 60-user repeatable usability test, the authors introduce the application of a simple statistical test comparing data across user experience levels. The results highlight specific design elements where users encountered problems with an interface design. More unique, however, is that the statistical test results also indicated the type of problem encountered, rather than wholly requiring individual interpretation by the usability evaluator. The 5-User Assumption (Faulkner, 2004; BRMIC) This paper demonstrates how many significant usability problems can be missed when testing only 5 users, and how much can be gained by adding 5, 10 or 15 more test users. Based on a research design that generated numeric data of problems encountered by 60 users in a repeatable usability test, it was recognized as 'paper of the year' by Human Factors International, 2004.
Ethnographic Awakenings that Changed Techniques and Designs: Development project stakeholders can have preconceived ideas about end users and what should be designed for them. This paper describes one case where ethnographic results changed how an organization viewed their value. In two cases, ethnographic stories revealed surprising human interactions, adding value through improved application design to support user goals. Quality of output from facilitated meetings was 127% better than non-facilitated meetings. Productivity in facilitated meetings was 291% better than non-facilitated meetings. Those outputs were achieved 7% faster. Based on the authors' preliminary research effort into meeting effectiveness in facilitated versus non-facilitated meetings. |
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