Human-Computer Interaction

UX/UI Principles

User Experience (UX) and User Interface (UI) design focuses on enhancing Usability so that Users can achieve their goals efficiently.

• Consistency: The use of consistent Design Patterns and Components to reduce Cognitive Load.
• Feedback: The system must display its status and respond to User Actions clearly and promptly.
• Affordance: Designing Components to clearly indicate their natural usage.

Nielsen's Heuristics

10 Usability principles for Interaction Design inspection.

1. Visibility of system status: The system should keep Users informed about its current status at all times.
2. Match between system and the real world: Use terminology and concepts that match the real world.
3. User control and freedom: Provide a way for Users to cancel or quickly exit an unwanted state.
4. Consistency and standards: Follow standards and conventions that Users are familiar with.
5. Error prevention: Design to prevent errors before they occur.
6. Recognition rather than recall: Clearly display options or information to reduce memory load.
7. Flexibility and efficiency of use: Provide Shortcuts for Expert Users.
8. Aesthetic and minimalist design: Present only the information necessary for the current Task.
9. Help users recognize, diagnose, and recover from errors: Error messages must be clear and propose solutions.
10. Help and documentation: Provide helpful documentation that is easy to access and relevant to what the User is currently doing.

Accessibility

Designing systems to support all User groups, including those with Disabilities.

• Color Contrast: Use an appropriate Contrast Ratio for Text and Background for reading clarity.
• Screen Reader Support: The use of Semantic HTML and ARIA Attributes for visually impaired Users.
• Keyboard Navigation: Support the use of all system functions via Keyboard without relying on a mouse.