Table 2: The 5-point Likert scale used within the heuristic evaluation.

RatingDescription

0I do not agree that this is a usability problem at all
1Cosmetic problem only. Need not be fixed unless extra time is available on project
2Minor usability problem. Fixing this should be given low priority
3Major usability problem. Important to fix, so should be given high priority
4Usability catastrophe. Imperative to fix this before product can be released