The Interface in the Environment: "One Size Fits Nobody"
http://infocentre.frontend.com/infocentre/articles/interfaceintheenvironment.html

Long, Frank
Frontend Infocentre
2001

Abstract:

At the outset of an interface design project we would normally conduct a detailed phase of user requirements gathering. We have discussed the various methods of conducting these in previous articles, but typically this includes stakeholder interviews and task analysis exercises. As many of you will be aware the results of this stage will lead to the development of user personas, task scenarios and ultimately lead to the development of wireframe screens of the interface. We tailor this approach to suit the job, so that specialised interfaces such as stock trading software will focus more on complex task analysis while mass-market interfaces such as Interactive TV will focus more on different user profiles. If the research and analysis is carried out well, then the resulting interaction design should be effective, allowing users to complete the required tasks easily. However, apart from the user and task there is one other key factor influencing the usability of the interface – the user environment.