Game Tools Tune-Up: Optimize Your Pipeline Through Usability

http://www.gamasutra.com/view/feature/4016/game_tools_tuneup_optimize_your_.php?print=1

Usability determines how easy software is to use, how quickly the desired results can be achieved by its users and how error-free those results are. Techniques to test and improve usability have been successfully used in other types of software development, and are slowly making their way into ours.