"... a significant milestone in the maturation of the field ... [it] represents a plateau from which we can view the extraordinary distances we have traveled in the past few years and from which we can begin to map our progress for the future."—SIGCHI Bulletin

• Contents: S.W. Draper, D.A. Norman, C. Lewis, Introduction. Part I:User Centered System Design.K. Hooper, Architectural Design: An Analogy. L.J. Bannon, Issues in Design: Some Notes. D.A. Norman, Cognitive Engineering. Part II:The Interface Experience.B.K. Laurel, Interface as Mimesis. E.L. Hutchins, J.D. Hollan, D.A. NormanDirect Manipulation Interfaces. A.A. diSessa, Notes on the Future of Programming: Breaking the Utility Barrier. Part III:Users' Understandings.M.S. Riley, User Understanding. C. Lewis, Understanding What's Happening in System Interactions. D. Owen, Naive Theories of Computation. A.A. diSessa, Models of Computation. W. Mark, Knowledge-Based Interface Design. Part IV:User Activities.A. Cypher, The Structure of Users' Activities. Y. Miyata, D.A. Norman, Psychological Issues in Support of Multiple Activities. R. Reichman, Communication Paradigms for a Window System. Part V:Toward a Pragmatics of Human-Machine Communication.W. Buxton, There's More to Interaction Than Meets the Eye: Some Issues in Manual Input. S.W. Draper, Display Managers as the Basis for User-Machine Communication. Part VI:Information Flow.D. Owen, Answers First, Then Questions. C.E. O'Malley, Helping Users Help Themselves. L.J. Bannon, Helping Users Help Each Other. C. Lewis, D.A. Norman, Designing for Error. L.J. Bannon, Computer-Mediated Communication. Part VII:The Context of Computing.J.S. Brown, From Cognitive to Social Ergonomics and Beyond.