Usability testing

Watch real users attempt tasks with your product to identify friction points that analytics alone can't reveal and prioritise improvements that remove blockers.

Usability testing

Usability testing

definition

Introduction

Usability testing is the practice of observing and evaluating how actual users interact with a product, website, application, or interface. Rather than relying on assumptions about user behaviour, usability testing involves watching real people attempt to complete tasks, noting where they struggle, what confuses them, and what works well.

Usability testing can range from formal laboratory settings with structured protocols to informal sessions where a product designer watches a user interact with a prototype. Testing typically involves a facilitator who observes the user, sometimes asking questions or requesting specific tasks, while recording observations and noting friction points.

Common usability testing methods include one-on-one interviews where users attempt tasks, moderated remote testing where facilitators observe via video, unmoderated testing where users complete tasks independently, and concept testing where early prototypes are evaluated. The key is getting direct observational data about how actual users interact with your product.

Usability testing approaches

  • Moderated in-person: facilitator observes user attempting tasks
  • Moderated remote: same approach via video call with screen sharing
  • Unmoderated: user completes tasks independently, providing feedback
  • Concept testing: early ideas or prototypes evaluated for viability
  • A/B testing: comparing two versions to determine which works better for users

Why it matters

Usability testing prevents building products that don't work the way users expect. Assumptions about how users will interact with a feature often prove wrong when tested. What seems logical to the person who built the feature confuses actual users. Testing identifies these gaps before significant development investment or after minimal feature use reveals poor adoption.

For B2B growth teams, usability insights directly impact conversion rates and adoption. If prospects struggle with your website navigation or signup flow, you lose conversions. If customers struggle with product onboarding, they churn. Small improvements identified through usability testing - simplifying signup, clarifying key messaging, improving navigation - compound into significant improvements in funnel metrics.

Usability testing also provides qualitative insights that quantitative data cannot. Analytics tell you that 40% of users drop off at a particular step. Usability testing shows you why - what specific confusion or friction caused them to abandon the process. These insights enable targeted solutions rather than trying multiple fixes.

How to apply it

Conduct usability testing by recruiting 5-8 representative users (more diminishes returns). Create a list of specific tasks you want to observe - typical tasks for a B2B platform might include signing up, finding a specific feature, completing a particular workflow. Ask users to think aloud as they attempt tasks, verbalising their thoughts and confusion. Observe where they succeed and where they struggle.

Take detailed notes on specific friction points. Don't interrupt or help users unless they are completely stuck - the goal is to see how they naturally interact with the product. After testing, analyse patterns across participants. If multiple users struggled with the same element, that's a priority fix. Prioritise fixing usability problems that impact core user journeys and high-volume interactions.

Signup flow simplification through usability testing

A B2B SaaS platform conducted usability testing with prospects and discovered that approximately 40% of users abandoned the signup flow after the second step. Through testing, they observed that users were confused about what information was required versus optional at each step, and several users failed to notice email verification requirements. Simplifying the form, adding clearer labels, and adding email verification reminders reduced abandonment to 15%. This single improvement, identified through usability testing, increased conversion rates by 30%.

Product onboarding clarity improvements

A marketing platform observed that despite offering comprehensive onboarding documentation, a significant percentage of customers did not adopt key features. Usability testing with new customers revealed that users frequently did not realise features existed and weren't accessing documentation. The team created in-app tooltips and onboarding flows that guided users through creating their first campaign. Post-testing observation showed that users who experienced guided onboarding adopted key features at 3x higher rates than those using self-service documentation alone.

Navigation architecture usability improvements

An enterprise software platform conducted usability testing with new users and observed that they frequently struggled to locate specific administrative settings despite the settings menu being well-labelled. Users expected certain settings to be in different locations based on their mental model of the system. By reorganising navigation based on how users expected to find features, the team reduced time to locate common settings by 60% and increased perceived product usability ratings significantly.

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