The document discusses four types of usability metrics: performance metrics like task success, time on task, errors, and efficiency; issue metrics which identify usability issues and their severity; behavioral metrics which observe verbal and nonverbal user behavior; and self-reported metrics involving ease of use, satisfaction, clarity, and comprehension as assessed by users.

1. Usability Metrics

2. 1 Performance
2 Issue metrics
3 Behavioral
4 Self-reported

3. 1 Performance
Task success Time on task Errors Efficiency
2 Issue metrics
3 Behavioral
4 Self-reported

4. 1 Performance
Task success Time on task Errors Efficiency
2 Issue metrics
Identify Issue Issue Severity
3 Behavioral
4 Self-reported

5. 1 Performance
Task success Time on task Errors Efficiency
2 Issue metrics
Identify Issue Issue Severity
3 Behavioral
Obs:Verbal bhvr Obs: Nonverbal bhvr
4 Self-reported

6. 1 Performance
Task success Time on task Errors Efficiency
2 Issue metrics
Identify Issue Issue Severity
3 Behavioral
Obs:Verbal bhvr Issue Severity
4 Self-reported
Ease Satisfaction Clarity Comprehension etc.

7. The Usability Test

8. 1 Opening
2 Pre-session Questionnaire
3 UT Session: Tasks
4 Post-session Questionnaire

9. 1 Opening
A. Introductions B. Explanation C. IRB D. Qs???
2 Pre-session Questionnaire
3 UT Session: Tasks
4 Post-session Questionnaire

10. 1 Opening
A. Introductions B. Explanation C. IRB D. Qs???
2 Pre-session Questionnaire
Any variables that could influence metrics: demographics,
familiarity, attitudes, etc.
3 UT Session: Tasks
4 Post-session Questionnaire

11. 1 Opening
A. Introductions B. Explanation C. IRB D. Qs???
2 Pre-session Questionnaire
Any variables that could influence metrics: demographics,
familiarity, attitudes, etc.
3 UT Session: Tasks
A. Pre-task questionnaire C. Post-task questionnaire
B. Task D. Post-task interview
4 Post-session Questionnaire

12. 1 Opening
A. Introductions B. Explanation C. IRB D. Qs???
2 Pre-session Questionnaire
Any variables that could influence metrics: demographics,
familiarity, attitudes, etc.
3 UT Session: Tasks
A. Pre-task questionnaire C. Post-task questionnaire
B. Task D. Post-task interview
4 Post-session Questionnaire
A. Satisfaction B. Organization C. Clarity D. Aesthetics