Q. What is the main advantage of the user-centered design approach?

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Q. Why is it difficult to predict the cognitive demands of an abstract design without user-centered techniques?

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Q. What is the emphasis of usability engineering?

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Q. What is the ultimate test of a product's usability?

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Q. What does the usability specification in the requirements specification focus on?

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Q. What does recoverability in the usability context refer to?

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Q. Why is usability engineering limited in its application?

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Q. What is the purpose of defining the attribute "backward recoverability" in terms of a measuring concept?

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Q. What does the "now level" indicate in the usability specification?

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Q. Why should the "worst case value" for a usability attribute be no lower than the "now level"?

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Q. What does the "best case" value for a usability attribute represent?

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Q. What are usability metrics?

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Q. What is the major feature of usability engineering?

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Q. What is a problem with usability metrics at early stages of design?

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Q. What is a limitation of usability engineering?

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Q. Why does usability engineering not necessarily guarantee usability for real people?

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Q. Which approach to prototyping involves building a prototype and then using the design knowledge gained to build the final product, discarding the actual prototype?

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Q. In the incremental approach to prototyping, how is the final product built?

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Q. Which prototyping approach involves using the prototype as the basis for the next iteration of design, and the actual system evolves from an initial limited version to its final release?

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Q. What is the main purpose of iterative design?

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