HUMAN-COMPUTER INTERACTION A J o u r n a l of Theoretical, Empirical, and Methodological Issues of User Science and of System Design Auditory Icons: Using Sound in Computer Interfaces -William W. Gaver NUMBER 3: CONTENTS OF VOLUME 2, 1986 NUMBER 1: Learning to Use a Text Editor: Some Learner Characteristics that Predict Success -- Louis M. Gomez, Structure and Development of Plans in Computer Text Editing -- Scott P. Robertson and John B. Black Graphic Representation of Judgmental Information -Donald MacGregor and Paul Slovic Softening Up Hard Science: Reply to Newell and Card -John M. Carroll and Robert L. Campbell Straightening Out Softening Up: Reply to Carroll and Campbell -- Allen Newell and Stuart Card NUMBER 4." Dennis E. Egan and Cheryl Bowers A Cognitively-Based Functional Taxonomy of Decision Support Techniques -- Wayne Zachary ]'he Influence of Color-Enhanced and Graphical Information Presentation in Decision Making -- lsak Benbasat, Albert S. Dexter, and Peter Todd NUMBER 2: Task-Action Grammars: A Model of the Mental Representation of Task Languages -- Stephen J. Payne Graphically Defining New Building Blocks in ThingLab -- Alan Borning Designing Interactive Tutorials for Computer Users -- and T. R. G. Green Learning Flow of Control: Recursive and Iterative Procedures -- Claudius M. Kessler and John R. Anderson Davida H. Charney and Lynne M. Reder A Cognitive Model Computer Tutor for Programming Recursion -- Peter Pirolli HUMAN-COMPUTER INTERACTION A Journal of Theoretical, Empirical, and Methodological Issues of User Science and of System Design ABSTRACTS OF ARTICLES reasoning ability, or associative memory ability. Results like these that relate learning difficulty to specific characteristics of people ultimately may suggest ways to change computer interface design or training to accommodate a wider range of users. Volume 2, Number 1, 1986 A Cognitively-Based Functional Taxonomy of Decision Support Techniques Wayne Zachary The Decision Support Systems (DSS) field has grown rapidly drawing technology from many disciplines and pursuing applications in a variety of domains but developing little underlying theoretical structure, and poor linkage between research and practice. This paper presents a classification scheme for DSS techniques that provides a common theoretical framework for DSS research and structures and simplifies the process of designing application systems. The classification system is functional, grouping DSS techniques according to their ability to provide similar kinds of support (i.e. functions) to a h u m a n decision maker. It is also cognitively based, defining the kinds of support that decision maker's need in terms of architectural features and procedural aspects of h u m a n cognition. The classification is expressed as a taxonomy, encompassing six primary classes of decision Learning to Use a Text Editor: Some Learner Characteristics that Predict Success Louis M Gomez, Dennis E. Egan, and Cheryl Bowers Why do some people have much more difficulty than others in learning a computer-based skill? To answer this question, we observed first-time users of computers as they learned to use a computer text editor. In two experiments, older people had more trouble than younger people and those who scored low on a stanbdard test of Spatial Memory had greater difficulty than high scorers. These correlations were stable over several hours of practice and did not vary as a function of the type of terminal used or specific editing problems attempted. Correlations involving Age and Spatial Memory could not be explained by other characteristics such as amount of education, S I G C H I Bulletin July 1987 Volume 19 Number 1

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