In Preece’s text how, and why is covered as part of the requirements gathering process for a usability study.

In Preece’s text, the discussion of What, How, and Why is covered as part of the requirements gathering process for a usability study. Which of these questions do you believe influences interaction design the most? Provide at least 3 citable examples.

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In Preece’s text how, and why is covered as part of the requirements gathering process for a usability study.
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