Usage-Centered Engineering for Web Applications
IEEE Software
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Activity theory has had a long history and a growing influence in the design professions broadly conceived and in interaction design in particular. Leading authorities, including Donald Norman, Bonnie Nardi, and others, have called for and argued the advantages of design approaches that focus more on the activities in which human users engage than on the users themselves. Human activity modeling is a recent development that builds on and enhances the effectiveness of activity theory by enabling more systematic and consistent modeling of core concepts in activity theory. Activity modeling makes possible a model-driven form of activity-centered design. Model-driven approaches are of growing influence in interaction design owing to the promise of yielding more orderly and manageable processes with enhanced traceability from initial conception and the establishment of requirements through to design and final realization.