A problem-solving approach to usability test planning

An approach to usability testing is described that can help ensure user-based designs: it places usability testing in a problem-solving context. Attention is given to areas in the test development process where problems may occur, problems that pull the focus of the test away from the user. Finally, the author suggests some research needed in usability testing if one is to move beyond the constraints imposed by the industry environment and grow a responsible methodology. She describes a typical test plan, some situational constraints that affect it, and alternative plans that might grow out of dealing with constraints