Stepping through a design to identify usability issues, especially for task completion flows, without needing users. Fast and cheap for early review.
Early review, before user testing, to catch usability issues fast and cheap without needing users.
1-3 days for an experienced reviewer to walk through the key task flows.
A prototype or flow to review, and a reviewer familiar with the cognitive walkthrough method.
Stepping through a design to identify usability issues, especially for task completion flows, without needing users. Fast and cheap for early review.
Expert bias. Misses real user mental models and the unexpected behaviors that come from actual use.
Whether you're rethinking a flagship product or trying to make sense of complex user behavior, I'd love to talk.