Usability Testing

What Is Usability Testing?

Usability testing evaluates how easily and effectively real users can interact with a software application to complete their tasks. It focuses on user experience, not technical correctness, answering questions such as:

• Is the system intuitive?
• Can users complete tasks efficiently?
• Are errors easy to understand and recover from?

Usability testing ensures the software is not only functional, but practical, learnable, and satisfying to use.

Why It Matters	Who Performs It	When It Occurs
Improves user adoption and satisfaction Reduces training and support costs Identifies friction and confusion early Prevents costly redesign after release Improves productivity and task success rates A technically correct system can still fail if users find it confusing or frustrating.	End users (primary participants) Testers	During design (wireframes and prototypes) During system testing (Testers) and UAT (End users) Before major releases After usability-related defects or enhancements

Typical Usability Testing Techniques

1. Task-Based Testing
   • Users are asked to complete specific tasks while being observed.
   • Purpose: Measure task success, effort, and errors.
2. Moderated Usability Testing
   • A facilitator guides the user and asks follow-up questions.
   • Purpose: Understand user intent, confusion, and expectations in real time.
3. Unmoderated Usability Testing
   • Users complete tasks independently, often remotely.
   • Purpose: Collect feedback quickly from a larger audience.

Key Takeaways

• Usability testing focuses on how users experience the system
• Performed by real users, not just testers
• Identifies issues that functional testing cannot
• Improves adoption, efficiency, and satisfaction