Contents: G. Fischer, A.C. Lemke, Constrained Design Processes: Steps Toward Convivial Computing. P.G. Polson, The Consequences of Consistent and Inconsistent User Interfaces. P. Smolensky, B. Fox, R. King. C. Lewis, Computer-Aided Reasoned Discourse or, How to Argue With a Computer. R. Guindon, A Multidisciplinary Perspective on Dialogue Structure in User-Advisor Dialogues. K.M. Fairchild, S.E. Poltrock, G.W. Furnas, SemNet: Three- Dimensional Graphic Representations of Large Knowledge Bases. W.P. Jones, "As We May Think?": Psychological Considerations in the Design of a Personal Filing System. J.E. McDonald, R.W. Schvaneveldt, The Application of User Knowledge to Interface Design.