Title :
Iterative user-interface design
Author_Institution :
Bellcore, Morristown, NJ, USA
Abstract :
A method for developing user interfaces by refining them iteratively over several versions is presented. Each iteration is subjected to user testing or other usability-evaluation methods designed to uncover usability problems. This method not only eliminates problems of this nature, but also allows designers to take advantage of any insights into user needs that emerge from the tests. The author describes four case studies where the median improvement in overall usability from the first to the last iteration was 165%, and the median improvement per iteration was 38%.<>
Keywords :
user interfaces; iterative user interface design; usability-evaluation methods; user testing; Costs; Design engineering; Design methodology; Gain measurement; Iterative methods; Life testing; Performance evaluation; System testing; Usability; User interfaces;
