Table 4.

Mean PSSUQ Scores After the Field Study (N=6)

Items	M± SD
1.Easy to use system	1± 0
2. Simple to use system	1± 0
3. Effectively complete tasks &scenarios	1± 0
4. Quickly complete tasks & scenarios	1± 0
5. Efficiently complete tasks & scenarios	1± 0
6. Comfort using system	1± 0
7. Easy to learn to use system	1± 0
8. Believe could become productive using system	1± 0
9. Error messages were clear	2.0 + 1.7
10. Easily recover from mistakes	1± 0
11. Information about system was clear	1± 0
12. Easy to find needed information	1± 0
13. Easy to understand information	1± 0
14. Information helped complete the task	1± 0
15. Information was clearly organized	1± 0
16. Interface was pleasant	1± 0
17. Enjoyed using interface	1± 0
PSSUQ Overall	1.05 +.10

PSSUQ, Post-Study System Usability Questionnaire, PSSUQ scores range from 1-7 (lower scores = higher satisfaction).