Usability
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An Introduction to Usability Teal Anderson September 21, 2001
Overview • • • •
What is usability? What is usability testing? Why is usability testing important? What steps are involved in effective testing?
What is usability? • A measurable characteristic • A practice
Usability - the characteristic • • • • • •
Ease of learning Ease of use Ease of remembering Subjective satisfaction Efficiency of use Effectiveness of use
Usability - the practice • • • •
Focus on users Find out who they are Find out how they use your site See the site from their perspective
What is usability testing? • • • •
Ask users who they are and what they do Ask yourself if the site meets guidelines Ask users to group and label concepts Watch users interact with the site
Why is usability testing important? • Happy users • Financial implications
Conducting effective tests • • • •
Dealing with participants Task design Data recording methods Analysis
Resources • Guidelines from the National Cancer Institute <www.usability.gov/guidelines> • IBM Ease of Use Guidelines <www3.ibm.com/ibm/easy/eou_ext.nsf/publish/572> • Web Content Accessibility Guidelines <www.w3.org/TR/WCAG10/> • Section 508 <www.section508.gov> • Bobby <www.cast.org/bobby>
Overview • • • •
What is usability? What is usability testing? Why is usability testing important? What steps are involved in effective testing?
What is usability? • A measurable characteristic • A practice
Usability - the characteristic • • • • • •
Ease of learning Ease of use Ease of remembering Subjective satisfaction Efficiency of use Effectiveness of use
Usability - the practice • • • •
Focus on users Find out who they are Find out how they use your site See the site from their perspective
What is usability testing? • • • •
Ask users who they are and what they do Ask yourself if the site meets guidelines Ask users to group and label concepts Watch users interact with the site
Why is usability testing important? • Happy users • Financial implications
Conducting effective tests • • • •
Dealing with participants Task design Data recording methods Analysis
Resources • Guidelines from the National Cancer Institute <www.usability.gov/guidelines> • IBM Ease of Use Guidelines <www3.ibm.com/ibm/easy/eou_ext.nsf/publish/572> • Web Content Accessibility Guidelines <www.w3.org/TR/WCAG10/> • Section 508 <www.section508.gov> • Bobby <www.cast.org/bobby>
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