An exploratory study co-chaired for Fable compared usability testing with cognitive disability participants and general population testers across three websites.  

Cognitive participants identified more issues and offered more suggestions than general population participants.  

Qualitative results showed cognitive testers flagged more content, icon and visual problems, and provided richer feedback.

Cognitive participants identified 1.8 times more usability issues and suggestions than general population participants across three websites. Their feedback revealed higher cognitive load affecting focus and energy.  

Including these users improves content clarity and interaction predictability for diverse groups. The small study highlights cognitive inclusion as vital for accessible, efficient user research.