11 Usability Testing
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11 Usability Testing

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11 Usability Testing 11 Usability Testing Presentation Transcript

  • USABILITY TESTING
    • Lauralee Flores, M.S.
  • FORMAL VS. DISCOUNT
    • Formal
      • More precise
      • More time consuming
      • More costly
      • Mathematical (statistical) results
    • Discount
      • Quicker
      • Less Costly
      • Not as precise
  • COGNITIVE WALKTHROUGH
    • “Think Aloud” “Cognitive Walkthrough”
      • Provides lots of process data
      • Relatively small number of test users (~5)
      • Many useful quotes for the report and presentation
    View slide
  • COGNITIVE WALKTHROUGH, cont.
    • Prompting the user
      • Thinking aloud is unnatural
      • Impacts performance measures
      • Responding to user’s questions with a question
    View slide
  • RUNNING YOUR TEST
    • Prepare scenarios and test plan
      • Typical of the product during actual use
      • Tests important users goals
  • RUNNING YOUR TEST, cont.
    • Selecting participants
      • 3-5 participants
      • Typical or actual users or as close as you can get to them
      • Avoid using friends and family
    • Do practice run through to iron out any bugs in your test plan
  • LOGISTICS
    • Running the Test
      • You should be the facilitator & observer
        • You and the participant should be the only ones speaking (the “computer” shouldn’t say anything)
        • Give instructions
        • Introductions
  • LOGISTICS, cont.
    • Running the Test (cont.)
      • Get someone to be the “computer”
        • Knows the system logic (which actions result in which consequences)
        • simulates the responses (without explanation)
  • THE RESULTS
    • The observers notes & impressions
    • Interpreting user behavior
      • Lots of problems in the same area?
      • Confusion or problem with high priority tasks?
      • User expectations not met?
        • Expectations often lead to good design ideas
  • ETHICAL ASPECTS
    • Respect user emotions and well-being
      • Don’t give positive reactions to successful tasks
      • Remain neutral
  • ETHICAL ISSUES, cont.
    • Interrupting
      • When user is speaking
      • When user is trying to complete a task
    • Users should feel comfortable
      • Do not laugh at user
      • Feelings of inadequacy
      • Explain your not testing them they are helping you test the product
    • Confidentiality
  • THE REPORT
    • The usability method
      • Defined
      • Methodology reported
    • Executive Summary
    • Findings
    • Recommendations
  • THE REPORT, cont.
    • Unresolved
    • Other things to include:
      • Pictures
      • User Quotes