User-centered design, activity-centered design, and goal-directed design: a review of three methods for designing web applications

When conducting research with users in order to design web applications, the practitioner has a variety of methods from which to choose. This paper examines three such methods'User-Centered Design (UCD), Goal-Directed Design (GDD), and Activity-Centered Design (ACD)'in terms of their foundations, processes, and deliverables.