Usability Testing
UX Design
What is Usability Testing
Usability Testing is a research method where representative users interact with a product or system to complete specific tasks while being observed. It evaluates how well users can use a product and identifies potential problems or areas for improvement.
Types of Usability Testing
Common approaches include:
- Moderated Testing: Facilitator-guided sessions with direct observation
- Unmoderated Testing: Remote sessions where users complete tasks independently
- Guerrilla Testing: Quick, informal testing in public spaces
- Lab Testing: Controlled environment testing with specialized equipment
When to conduct Usability Testing
Perform testing throughout the design process: early stages with prototypes, during development with working features, and after launch to validate changes. Regular testing helps catch issues early when they're easier to fix.
Benefits of Usability Testing
This method provides direct evidence of user behavior, identifies usability issues before launch, validates design decisions, and helps prioritize improvements. It reduces development risks and ensures products meet user needs effectively.
For qualitative insights, 5-7 participants per user group usually uncover about 85% of usability issues. For quantitative studies, you'll need 20+ participants for statistical significance.
Moderated testing involves a facilitator who can probe deeper into issues and ask follow-up questions, while unmoderated testing allows participants to complete tasks independently, often in their natural environment.
Write realistic, goal-oriented tasks that avoid giving away the solution. Use natural language, provide context, and avoid using interface-specific terminology that might bias the participant.
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