01-3 usability evaluation methods

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/


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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.html


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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


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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


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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


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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/


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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

01-3 usability evaluation methods

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