Table 2.

Mean Severity Scores of Heuristic Testing

Nielsen’s H eur ist ic Chec klist	Mean (SD)
1. Visibility of system status	0.8 (0.84)
2. Match between system and real world	1.2 (0.84)
3. User control and freedom	2.4 (0.89)
4. Consistency and standards	0.4 (0.89)
5. Help users recognize, diagnose, and recover from errors	0.4 (0.89)
6. Error prevention	0.4 (0.89)
7. Recognition rather than recall	0.6 (0.89)
8. Flexibility and efficiency of use	0.8 (1.10)
9. Aesthetic and minimalist design	0.6 (0.89)
10. Help and Documentation	1.4 (0.89)