05Brand Integrity
Usefulness
Usefulness evaluates navigation, information architecture, interaction design, accessibility and mobile behaviour — whether a person with a goal can accomplish it without obstruction.
Why it matters
- Friction is the most common and most measurable cause of lost conversion, and usually the cheapest to remove.
- Accessibility is both a legal exposure and a direct expansion of addressable audience.
- Navigation structure is read by machines as well as people; a confused architecture harms findability too.
What strong looks like
- Navigation labels match user language and the primary paths are reachable in two steps.
- The experience is fully operable by keyboard, with visible focus and a logical order.
- Contrast, target sizes and text scaling meet or exceed WCAG AA.
- Mobile is a designed experience rather than a compressed desktop one.
Common failures
- Navigation organised around the internal org chart.
- Interactive elements that are not reachable or operable by keyboard.
- Low-contrast text and interface elements adopted for aesthetic reasons.
- Interstitials, consent walls and modals that block the task on mobile.
What we evaluate
- Information architecture and navigation clarity.
- Automated and manual accessibility testing against WCAG 2.2 AA.
- Keyboard operability and focus management.
- Mobile layout, target sizing and interruption load.
- Task completion friction on primary journeys.
How to improve
- Run task-based testing on the three journeys that matter most and fix what blocks them.
- Remediate accessibility failures in order of severity and traffic exposure.
- Reduce navigation to the paths people actually use.
- Remove or defer interruptions until after the user's first goal is met.
Standards it inherits from
Owned by UX research and service design. This dimension is not invented here — it states an existing discipline standard as something observable and scorable.
- Nielsen's ten usability heuristics
- Task success rate measurement
- Design thinking / double diamond
Who owns it
Scoring anchors
- 3
- Primary tasks are hard to locate and harder to complete; the site describes rather than helps.
- 5
- Core tasks work, with friction and dead ends on secondary paths.
- 7
- Common tasks complete quickly, with useful tools and clear feedback.
- 9
- The site does work for the visitor — tasks succeed, and the utility is a reason to return.
Illustrative median across published studies: 5.9
How to test it yourself
- Write your five most common visitor tasks and time yourself completing each one.
- Watch someone unfamiliar attempt the top task without help.
- Check every error state for a recovery path.
- Count how many clicks the most valuable action takes from a deep page.
Questions
- Is this measured with analytics?
- It is scored on observable evidence — whether the task can be completed, and how — so results stay comparable across organizations without access to their analytics.
Evidence
This dimension is scored from the following publicly observable sources. Where a source is unavailable for an organization, the limitation is recorded with the result rather than inferred around.
- Automated accessibility scans plus manual keyboard and screen-reader checks
- Navigation and IA review
- Mobile and desktop journey walkthroughs
- Interaction and form behaviour testing