Get greater visibility into participant engagement with validation that identifies participants who complete or skip prototype tasks without interacting with the prototype.
This gives you another way to assess response quality, identify participants whose task engagement may warrant a closer look, and take action as needed.
How it works
The validation identifies participants who complete or skip prototype tasks without clicking on the prototype.
We've built in safeguards to keep tasks and behaviors into account:
Open exploration and one-screen tasks: Only flagged if participants spend 5 seconds or less on the task, recognizing that some tasks are designed for observation rather than interaction.
Free skip: Every participant gets one free skip. Additional skipped tasks count towards validation.
What happens when a participant is flagged?
Clear visibility: Researchers see a note in their study results: "This participant completed your tasks without interacting with the prototype." You can then decide whether to exclude the participant.
Automatic replacement: Participants recruited via Optimal are automatically replaced if they show no interaction on more than two tasks, or on every task in the study.
Open exploration exceptions: Open exploration tasks will not trigger automatic replacement.
Self-recruited participants: Participants you have invited are not automatically removed but will receive the same validation note for researchers to review.
This is available in Prototype Testing and prototype test sections in Optimal’s Usability Testing tool. This validation is not currently available for vibe-coded prototype testing.