Date post: | 01-Nov-2014 |
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Technology |
Upload: | lflores |
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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
COGNITIVE WALKTHROUGH, cont.
Prompting the user
Thinking aloud is unnatural
Impacts performance measures
Responding to user’s questions with a question
RUNNING YOUR TESTPrepare 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
LOGISTICSRunning 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 RESULTSThe 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