Human computer user and usability

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.Instructions

This is a required assignment, worth 20 points. The assignment must be submitted by the due date. Late assignment are not allowed. 
You are required to submit a minimum of two postings. Points will be deducted for not fulfilling this minimum requirement.
Apply and use the basic citation styles of APA is required. Points are deducted per the rubric for this behavior.
Do not claim credit for the words, ideas, and concepts of others. Use in-text citation and list the reference of your supporting source following APA’s style and formatting. Points are deducted per the rubric for this behavior.
Do not copy and paste information or concepts from the Internet and claim that is your work. It will be considered Plagiarism and you will receive zero for your work. A second offense results in a zero for the course. A third is termination from the university.