Argues that the shared use of artifacts is supported by latent border resources that lie beyond the canonical artifact. Designers must understand the role border resources play and work more directly to help users develop them. This will require designers to change their understanding of artifacts and users. (Contains 69 references.) (KRN)

Redesign of human-computer interface for users of computerized information systems can make substantial difference in training time, performance speed, error rates, and user satisfaction. Information and computer scientists are using controlled psychologically oriented experimentation, and evaluations during system development and active use to…

The model presented identifies three basic needs which must be met in order to increase our understanding of the user interface in computerized information systems: empirical studies of users' attitudes; systematic summaries and critical analyses of these studies; and an interim set of guidelines for user interface design. (EJS)