Usability Testing Patterns

Test Planning

Sample Size

• 5 users find ~85% of usability issues.
• 8-12 for quantitative confidence.
• Test with your target audience, not colleagues.

Task Design

• Scenario-based: "You want to send money to a friend who just bought you lunch."
• Not instruction-based: "Click the Send Money button in the top right."
• 5-7 tasks per session (30-45 minute sessions).
• Order from simple to complex.

Moderation