Table 7.

Problems uncovered by end users and rated based on mean Likert scores.

Problem ID number	Heuristic category	Severity rating (0-4) (σ)	Max severity rating given (0-4)
1	Cognitive directness	1.83 (0.89)	3
2	Consistency and compliance of task structure	1.5 (0.7)	2
4	Discernibility (button size)	1.5 (0.8)	2
7	Discernibility (text size)	1.33 (1)	3
13	Discernibility (button size)	1.2 (0.9)	3
8	Discernibility (color tone and contrast)	1.15 (0.6)	2
9	Completeness and sufficiency of meaning	1(1.2)	3
6	Completeness and sufficiency of meaning	0.91 (0.6)	3
12	Discernibility (text size)	0.91 (0.7)	3