Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Distribution of usability violations on Rolf Molich's severity rating scale [29].
| Severity degree | Expert 1 | Expert 2 | Expert 3 | Expert 4 | Expert 5 | Total | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HE1 | HE2 | HE1 | HE2 | HE1 | HE2 | HE1 | HE2 | HE1 | HE2 | HE1 | HE2 | |
| (1) Improvement | 12 | 16 | 11 | 5 | 10 | 17 | 14 | 2 | 14 | 3 | 61 | 43 |
| (2) Minor problem | 8 | 19 | 12 | 21 | 12 | 30 | 19 | 11 | 15 | 13 | 66 | 94 |
| (3) Severe problem | 3 | 6 | 0 | 9 | 0 | 7 | 7 | 8 | 7 | 8 | 17 | 38 |
| (4) Critical problem | 2 | 3 | 0 | 3 | 0 | 10 | 0 | 5 | 2 | 2 | 4 | 23 |
| (5) Malfunction | 3 | 1 | 0 | 0 | 0 | 14 | 0 | 6 | 1 | 4 | 4 | 25 |
