uw library - cnapg - webusability - 20011 uw library – web usability testing cnapg project amos...
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UW Library - CNAPG - WebUsability - 2001
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UW Library – Web Usability Testing
CNAPG ProjectAmos Lakos & Anne Fullerton
Davis LibraryJuly 10 2001
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UW Library - CNAPG - WebUsability - 2001
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Usability – What is it?
Users can use the product quickly & easily – to accomplish their tasks
Focus on users – understanding what they want & need to accomplish
Users (not designer) - determine when the product is easy to use
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Web Usability – why test?(Jacob Nielsen)
To improve design – not document existing weaknesses
Average site has 11 usability catastrophes
On average – users complete 42% of test tasks
Most users rate sites subjectively – 4.9/7 – rate high
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Usability Tests - methodology
Identify user population profileFind representative usersHeuristic EvaluationUsability (User) Testing
Prototype groups of 5-6 testeesFocus GroupsUser feedback – web, phone, etc.Usage Log Analysis
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UW Web Usability – Why?
If users can’t find what they search for – they will go somewhere else!!!
Customer decides everything – competition is a mouse-click away
Have to make web site useful to our students & faculty – so they use it well - reduce stress & frustration - save time
Create brand loyalty – stay with UW site!!!
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Web Usability – UW Library Goals
Make the UW Library Gateway the main window to information to our students & faculty
Make the UW Library Web site useful to our customers
Use User Centred Design – to build the UW Library web site
Create Brand Loyalty (UW Library)
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UW Web Usability – what are we doing?
Systems Design Students ProjectPrototype CreationUsability Testing – 5-6 individuals
Analysis of results Focus groups Creation of new prototype
Repeat test cycle
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UW Gateway Usability Study - background
Terms of ReferenceProfessor Carolyn MacGregor –
cognitive ergonomics researchSystems Design 348 – User Centred
Design (UCD) CECS project – winter 1999
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Project Objectives
1. Usability evaluation of current UW Library gateway
2. Redesign (& evaluate redesigns) using a series of user centred design techniques
3. Functional prototype 4. Use 8 UCD methods5. CNAPG member as a client6. Professor & TAs as project managers
& project coordinators
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Phase 1 – Evaluation of the Current Gateway
Current page analysis Cognitive Design Walkthrough Heuristic Evaluation Hierarchical Task Analysis
Competitive analysis of other library gateways
Proposals for changes to gateway & preliminary sketches
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Phase 2 – Evaluate Low-fidelity (non-functional) Prototypes
Card Sorting Discount Usability
Heuristics Cognitive Design Walkthrough
Prototypes on 8.5 x 11 paper
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Phase 3: Evaluate Medium Fidelity (functional) Prototypes
Key Stroke Level AnalysisLab Based User Testing
Timed Trials Subjective Evaluation
Presentation of final prototypes to class & CNAPG
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Common Student Findings
Words & phrases for links not intuitiveDavis graphic distracting; hides text
versionNavigation bar missed; buttons not
obviousMouse-over & mouse-types
inconsistentDirect search of TRELLIS expected on
top page
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Design Recommendations
Revise heading & subheading language (card sorting)
Majority of space for headings & subheadings
Visually connect headings & subheadings
Simplify navigation bar – consistency; add site index
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Design Recommendations – cont’d
Clear UW logo (top left)TRELLIS quick search (top left)Text version explicit (top right)Colours & fonts to facilitate
reading & feedback
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Next Steps
1. Language revisions – card sorting – grad students; faculty
2. Rapid prototyping – 1/week planned
3. New design – mid August