Conceptual Design for Interactive Systems: Designing for Performance and User Experience

By Avi Parush Published: December 7, 2015 This is a sample chapter from the new book Conceptual Design for Interactive Systems: Designing for Performance and User Experience, by Avi Parush. 2015 Morgan Kaufmann. Chapter 9: Conceptual Models Matter!: Implications to Human Performance, Usability, and Experience Earlier in the book, after introducing the four calendar applications, we asked what the fundamental differences between them are. Moreover, do those fundamental differences matter? The discussion of the conceptual model using the layered framework addressed the first question in depth. However, what about the second question: do those differences matter? In order to discuss why the conceptual model matters, let us distinguish between human performance, on the one hand, and usability and user experience, on the other hand. Human performance refers to perceptual, cognitive, emotional, and physical processes and behaviors. Usability and user experience refer to the effectiveness, the efficiency, and the subjective experience associated with users interacting with an application in order to accomplish goals.

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