Uploaded byDr. V Vorvoreanu
usability testing - usability metrics and wea
Usability is defined by 5 components: learnability, efficiency, memorability, errors, and satisfaction. Usability can be measured through performance metrics like task success and time on task, behavioral observations, issue metrics like errors and severity, and self-reported measures such as ease of use, satisfaction, and comprehension. Usability testing involves participants completing tasks while observers collect data from questionnaires and interviews.
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usability testing - usability metrics and wea
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- 2. Usability is definedby 5 quality components: 1.Learnability: How easy is it for users to accomplish basic tasks the first time they encounter the design? 2.Efficiency: Once users have learned the design, how quickly can they perform tasks? 3.Memorability:When users return to the design after a period of not using it, how easily can they reestablish proficiency? 4.Errors: How many errors do users make, how severe are these errors, and how easily can they recover from the errors? 5.Satisfaction: How pleasant is it to use the design? https://www.nngroup.com/articles/usability-101-introduction-to-usability/ Usability
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- 5. Performance1 Behavioral3 Issue metrics2 Self-reported4 Task successTime on task Errors Efficiency
- 6. Performance1 Behavioral3 Issue metrics2 Self-reported4 Task successTime on task Errors Efficiency Identify Issue Issue Severity
- 7. Performance1 Behavioral3 Issue metrics2 Self-reported4 Task successTime on task Errors Efficiency Identify Issue Issue Severity Obs:Verbal bhvr Obs: Nonverbal bhvr
- 8. Performance1 Behavioral3 Issue metrics2 Self-reported4 Task successTime on task Errors Efficiency Identify Issue Issue Severity Obs:Verbal bhvr Obs: Nonverbal bhvr Ease Satisfaction Clarity Comprehension etc.
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- 10. Opening1 UT Session: Tasks3 Pre-sessionQuestionnaire2 Post-session Questionnaire4
- 11. Opening1 UT Session: Tasks3 Pre-sessionQuestionnaire2 Post-session Questionnaire4 A. Introductions B. Explanation C. IRB D. Qs???
- 12. Opening1 UT Session: Tasks3 Pre-sessionQuestionnaire2 Post-session Questionnaire4 A. Introductions B. Explanation C. IRB D. Qs??? Any variables that could influence metrics: demographics, familiarity, attitudes, etc.
- 13. Opening1 UT Session: Tasks3 Pre-sessionQuestionnaire2 Post-session Questionnaire4 A. Pre-task questionnaire B. Task C. Post-task questionnaire D. Post-task interview A. Introductions B. Explanation C. IRB D. Qs??? Any variables that could influence metrics: demographics, familiarity, attitudes, etc.
- 14. Opening1 UT Session: Tasks3 Pre-sessionQuestionnaire2 Post-session Questionnaire4 Any variables that could influence metrics: demographics, familiarity, attitudes, etc. A. Pre-task questionnaire B. Task C. Post-task questionnaire D. Post-task interview A. Introductions B. Explanation C. IRB D. Qs??? A. Satisfaction B. Organization C. Clarity D. Aesthetics
- 15. Website Experience Analysis What specificUI elements account for aspects of the user experience?
- 16. interpretation UX prominence specificUI elements feelings opinions attitudes etc.
- 17. interpretation UX prominence specificUI elements feelings opinions attitudes etc. I trust… SA 1234567 SD
- 18. interpretation UX prominence specificUI elements feelings opinions attitudes etc. I trust… SA 1234567 SD What about this UI makes you feel this way?