The Usability Engineering Lifecycle: A Practitioner's Handbook for User Interface Design
By Deborah J. Mayhew

Chapter 8: Conceptual Model Design

Chapter 8: Conceptual Model Design
Purpose
I find it useful to divide the process of actual user interface design into three levels. In level 1, Conceptual Model Design, I design high-level presentation rules that map to the Reengineered Task Organization Model generated in the Work Reengineering task. In level 2, I design lower-level rules for screen design (Screen Design Standards), and in level 3, I design the complete Detailed User Interface Design, based on the rules generated, refined, and validated in levels 1 and 2. This chapter presents level 1 design issues, while Chapters 11 and 15 present level 2 and 3 design issues, respectively.
The Reengineered Task Organization Model generated in the Work Reengineering task becomes the foundation for the product user interface design. It provides the underlying structure and organization of the total "user interface architecture," which also includes a set of conventions regarding the presentation of that structure (the Conceptual Model Design and the Screen Design Standards). Detailed User Interface Design is then premised on and driven by this user interface architecture.
The interface design process is divided into three levels: Conceptual Model Design, Screen Design Standards, and Detailed UI Design
For any single Reengineered Task Organization Model, there are an infinite number of possible Conceptual Model Designs, or visual presentations of the functionality organized in the model. Getting the Reengineered Task Organization Model right is a key step, and separating it from Conceptual Model Design greatly facilitates the overall design process by untangling...
Copyright Morgan Kaufmann Publishers, Inc. 1999 under license agreement with Books24x7
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