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Usability as an Assessment Method: An introduction that examines how usability studies can provide useful evidence to inform decision-making Information Services Assessment Council May 11, 2006
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assessment an ongoing process in which services, resources and performance are measured against the expectations of users, and improvements are made to satisfy user needs effectively and efficiently.
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What do we need to know?
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Who can tell us?
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How can we get the information?
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What will it enable us to do?
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How much will it cost?
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ISO standard ISO 9241-11 (1998) Guidance on Usability defines usability as: – 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.
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Usability Testing A means for measuring how well people can use a web page (or a computer interface, document, or device) for its intended purpose.
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Benefits of Usability Testing Better user experience Better understanding of users Lower support costs
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Conduct a Usability Study When: Designing a new user interface Re-designing an existing interface Results will inform specific decisions Time and other resources permit
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Test early and often
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Usability Testing Process Specify objectives Identify tasks Get permission from HSCL Decide method of capturing results Recruit participants Choose a facilitator Conduct tests
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Usability Testing Process cont. Analyze and report results Identify problems and possible solutions Do another round of testing to determine if your solutions work
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Specify Objectives What do you want to learn? How will the information be used?
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Identify tasks Test important features Test areas where you expect problems Test your assumptions
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Recording methods Observers taking notes Note takers and video recording Screen capture software Software that combines screen capture and video
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Recruiting Participants 3-4 participants per study Recruit loosely and grade on a curve. - Steve Krug
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Facilitation Get their consent Make it clear that you’re testing the site, not them Encourage them to think out loud
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Analyzing results Can they find their way around? Look at task completion times Watch for head slappers and shocks Remember, you’re seeing their best behavior
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Reporting results Report problem areas to developers Test possible solutions to make sure the chosen solution works Do a presentation to tell everyone how much usability testing improved your site
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Usability Testing Resources Jeffrey Rubin’s Handbook of Usability Testing Steve Krug’s Don’t Make Me Think! A Common Sense Approach to Web Usability Steve Krug’s site, www.sensible.com
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Information Services Assessment Council members Susanne Clement, Libraries Jill Glaser, IT Ryan Papesh, NTS Thelma Simons, IT John Stratton, Libraries Bill Myers, IS
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Call on ISAC members to: Consult, advise and assist in the development of assessment initiatives. Identify other campus resources for assessment-related services. Provide oversight and assure coordination with other IS assessment activities.
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Assessment presentations available at: www.informationservices.ku.edu/assessment/
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