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8/3/2019 01-3 Usability Evaluation Methods
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Compiled with the assistance of the Tiger University Program of the EstonianInformation Technology Foundation
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Usability Evaluation
MethodsDavid Lamas, Ilya Shmorgun
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Usability Evaluation
Methods Checklist evaluation Focus groups Exploration test Task completion
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Checklist Evaluation
http://www.usabilityrst.com/usability-methods/heuristic-evaluation
http://www.usabilityfirst.com/usability-methods/heuristic-evaluation/http://www.usabilityfirst.com/usability-methods/heuristic-evaluation/8/3/2019 01-3 Usability Evaluation Methods
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An evaluation of an interface by one or moreusability experts.
Evaluators measure the usability, efciency,and effectiveness based on a list of specicproperties or guidelines the product should
correspond to.
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Nielsens Heuristics
http://www.useit.com/papers/heuristic/heuristic_list.html
http://www.useit.com/papers/heuristic/heuristic_list.htmlhttp://www.useit.com/papers/heuristic/heuristic_list.html8/3/2019 01-3 Usability Evaluation Methods
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Visibility of system status
Match between system and the real world
User control and freedom
Consistency and standards
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Error prevention
Recognition rather than recall
Flexibility and efciency of use
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Aesthetic and minimalist design
Helping users recognize, diagnose, andrecover from errors
Help and documentation
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Demo
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Tools Used
State transition diagrams System specication (if available) Nielsens usability heuristics
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Focus Groups
http://www.usabilityrst.com/usability-methods/focus-groups
http://www.usabilityfirst.com/usability-methods/heuristic-evaluation/http://www.usabilityfirst.com/usability-methods/heuristic-evaluation/8/3/2019 01-3 Usability Evaluation Methods
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A moderator facilitates a small group of 4 to8 participants by demonstrating or showingthem a product or concept.
The participants are encouraged to freelygive their honest opinions about theproduct, including suggestions to make itbetter.
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Demo
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Tools Used
Product introduction script Notebook Voice recorder
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Exploration Test
http://www.allaboutux.org/exploration-test
http://www.usabilityfirst.com/usability-methods/heuristic-evaluation/http://www.usabilityfirst.com/usability-methods/heuristic-evaluation/8/3/2019 01-3 Usability Evaluation Methods
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A moderator shows a design to gainperceptions of people. The user isencouraged to freely explore the design andthe moderator asks questions whensomething interesting happens.
Users should not be directed in any specicway.
Exploration test are conducted as one onone sessions.
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Demo
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Tools Used
Silverback or Morae System usability scale
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Task Completion
http://www.usabilityrst.com/usability-methods/usability-testing
http://www.usabilityfirst.com/usability-methods/heuristic-evaluation/http://www.usabilityfirst.com/usability-methods/heuristic-evaluation/8/3/2019 01-3 Usability Evaluation Methods
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A moderator provides a user with tasks to
perform during testing that reect their differentusage patterns.
Participants will perform a set of 5 to 10 taskswithin a 90-minute session. Tasks should representthe mo st commo n user goals (e.g. recovering alost password) and/or the most importantconversion goals from the website or applicationowners perspective (e.g. making a purchase).
It is crucial to establish very clear success criteriafor each task.
http://www.usabilityfirst.com/glossary/conversion/http://www.usabilityfirst.com/glossary/conversion/http://www.usabilityfirst.com/glossary/conversion/8/3/2019 01-3 Usability Evaluation Methods
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Demo
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Tools Used
Product introduction script A list of test cases Silverback or Morae in case of face to face
testing Loop11 in case of online testing
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And so we covered
Checklist evaluation Focus groups Exploration test Task completion