Table 7 Problem severity scale
Level 1 | Prevents task completion  May lead to user injury  May cause programme to be ineffective  May cause user disengagement |
Level 2 | Creates significant delay or frustration  Significantly impedes programme effectiveness |
Level 3 | Problems have minor effect on usability  May have minor effect on programme effectiveness  May cause minor user uncertainty |
Level 4: | Subtle and possible enhancements/suggestions |