Cognitive_Walkthrough_Evalua

The Cognitive Walkthrough is a structured usability inspection method developed by Polson, Lewis, Rieman, and Wharton in the early 1990s. Unlike user testing, it requires no real end users — instead, evaluators systematically step through an interface to assess how easily a first-time user could learn to accomplish tasks.

• Inspection without users: Evaluators simulate the perspective of a novice user, examining each interface action to judge whether the next correct step is apparent and achievable.
• Learnability as the central focus: The method specifically targets how quickly and intuitively a first-time or infrequent user can reach a basic level of task performance — recurring, expert users are a lower priority here.
• Theoretical basis — exploratory learning: The method is grounded in the idea that users naturally rely on recognition and contextual clues rather than memorized instructions. Good design supports correct guesses; visible affordances and meaningful feedback are therefore essential at every step.
• Tied to concrete actions: Unlike broader inspection approaches, findings from a Cognitive Walkthrough are anchored to specific user actions and decision points, making issues easier to locate and address.
• Complements other methods: Heuristic Evaluation covers a wider range of issues more quickly, but Cognitive Walkthrough goes deeper on task flows. Both can be applied to prototypes before any live user testing, and using them together increases the breadth and depth of usability problems discovered.