How to Conduct Usability Testing: Best Practices and Tips for Success

Usability means letting the needs of end-users inform the design. It means starting from the user's point of view, observing real people interact with your product, and drawing informative conclusions. More than just 'ease of use,' usability revolves around five dimensions: efficient, effective, engaging, error tolerant, and easy to learn.

Why Usability Testing?

• You've worked hard to create an app, website, or product — but users just don't connect with it.
• Usability testing is the key to discovering how real users experience your product before you take it to market.
• When you build something, you become so familiar with it that you grow blind to its flaws. Usability testing is the ultimate bias-remover.

Usability Testing Methods

• Formative Testing: Conducted during the development phase to enable immediate changes.
• Summative Testing: Performed after product release to assess overall effectiveness.
• Remote Testing: Users are evaluated remotely, either moderated or unmoderated.
• In-Person Testing: Conducted face-to-face, offering real-time feedback and deeper insights.

When to Conduct Usability Testing

• When you want to understand the difference between what you expect users will do and what they actually do.
• As a continuous process rather than a one-time activity — continuously learn and iterate before and after launch.
• Before launch: conduct tests before any development work begins, using prototypes.

Types of Usability Testing

• Exploratory: Performed early in the design phase to compare how well functions match user expectations. Testers compare website features with their hopes.
• Assessment: Conducted early to mid-design to determine how well features are implemented. Observers record difficulty points.
• Evaluation: After the website is live, to determine whether it is achieving its goals.
• Comparison: Conducted anytime to compare two or more design approaches. Testers identify the strong features of each design.

How to Run a Usability Test

The Three Elements

• Recruit representative participants: Begin with people who represent your product's target market.
• Facilitate structured tasks: A facilitator leads participants through hands-on tasks under controlled conditions while a researcher observes.
• Ask and observe: The researcher notes where problems or frustrations arise and assesses how the user experiences the product.

Practical Tips

• Tip 1: Treat participants as regular people, not test subjects. When people feel they're in a study, they get nervous and don't act naturally.
• Tip 2: Don't just listen to answers — observe behaviour. People say one thing and do another.
• Tip 3: Make it clear you're testing the product, not the person. There are no right or wrong answers.

Measuring Usability

User-friendliness can be measured using the following six parameters:

1. 1Efficiency: Minimum time to find or execute a task — e.g., locating a pending friend request in under 3 seconds.
2. 2Memorability: Whether a returning user can execute a task without help after time away.
3. 3Accuracy: Ensuring no irrelevant or broken content exists in the product.
4. 4Learnability: How quickly a new user learns to perform fundamental tasks.
5. 5Satisfaction: How freely and comfortably a satisfied customer can use the application.
6. 6Error Recovery: Helping users fix errors they made and successfully complete their task.

Key Points to Remember

"Good design is harder to notice than poor design. Good designs fit our needs so well that the design becomes invisible, serving us without drawing attention to itself. Bad design, on the other hand, announces itself at every step."