Chapter 8: Usability Principles
Chapter 8 of 15
Chapter 8: Usability Principles
8.1 Usability Guidelines
Follow usability principles for effective design.
Jakob Nielsen's 10 Usability Heuristics:
- Visibility of system status
- Match between system and real world
- User control and freedom
- Consistency and standards
- Error prevention
- Recognition rather than recall
- Flexibility and efficiency of use
- Aesthetic and minimalist design
- Help users recognize, diagnose, and recover from errors
- Help and documentation
8.2 Usability Testing
Test designs for usability issues.
- Test with real users
- Observe users using the product
- Identify pain points and confusion
- Measure task completion rates
- Iterate based on findings
8.3 Usability Metrics
Measure usability with key metrics.
- Task completion rate
- Time to complete tasks
- Error rate
- User satisfaction scores
- Learnability measures