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Usability Testing 101Gerry Gaffney
Usability Testing 101Gerry Gaffney
@gerrygaffney
About “usability”
Usability testing
A definition
• “The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use.” (ISO definition)
@gerrygaffney
!
Usability “heuristics”• There are certain characteristics of usable
systems • Individually and of themselves, they don’t make
a system usable • But if they’re absent, the system will not be
usable.
@gerrygaffney
Navigation and orientation
@gerrygaffney
Phot
o: C
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@gerrygaffney
Workflow support
@gerrygaffney
Phot
o: l
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Error prevention & handling
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Consistency
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Phot
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Recognition, not Recall
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Feedback
@gerrygaffneyPhoto: fdecomite, flickr creative commons
Visual clarity
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Phot
o: T
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Control
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Phot
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Language
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Accessibility
@gerrygaffneyPhot
o: G
erry
Gaf
fney
@gerrygaffney
Usability, UX, CX, Service Design and more…
Usability testing
@gerrygaffney
Phot
o: G
erry
Gaf
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Why do usability testing?
@gerrygaffneyIm
age:
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What’s involved?
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Have representative users attempt typical tasks
Observe them Have them think aloud Identify problems Fix the problems Repeat as required.
Representative users
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Phot
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Lou
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Recruiting & scheduling
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Phot
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Tasks
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Phot
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Tasks
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Tasks
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Tasks
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Equipment
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Phot
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Hang on, did we forget to plan?Start with a Test Plan Recruitment brief Script Task list & task cards Consent form Payment/incentive Questionnaire Equipment … and do a pilot test.
@gerrygaffney
@gerrygaffney
@gerrygaffney
@gerrygaffney
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@gerrygaffney
Phot
o: Ju
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@gerrygaffney
Phot
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Do a pilot test!
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Photo: ChocolateFrogs, flickr creative commons. https://flic.kr/p/9PcJN5
How many participants?
Reporting
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Encourage observers
Invite people to observe Debrief with others Spread the word Avoid usability-testing-as-weapon.
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Good facilitation
Listen Allow plenty of time for people to think Don’t prompt Use neutral body language Encourage people to think aloud Finish on time!
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Moderated, unmoderated, remote, multi-party, automated, A/B testing, 5-second tests, RITE…
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Contextual enquiry, surveys, diary studies (“cultural probes”), card-sorting, heuristic evaluation, web analytics… lots of different user-centred design techniques
Just do it!
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Some reading
@gerrygaffney
“Return on Investment for Usability” - Jakob Nielsen. http://bit.ly/28LuXRu
“10 Usability Heuristics for User Interface Design” - Jakob Nielsen. http://bit.ly/28LuZsB
“Rocket Surgery Made Easy” - Steve Krug. And: http://www.sensible.com/rsme.html
“What really matters: Focusing on Top Tasks” - Gerry McGovern. http://bit.ly/28LwPJS
User Experience Podcast. uxpod.com
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Imag
e: F
ox B
road
cast
ing
Com
pany
@gerrygaffney
Gerry Gaffney
gerry@infodesign.com.au
uxpod.com
Thank you. Questions?
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