A cognitive walkthrough is a usability evaluation method that involves walking through tasks to evaluate if a user will be able to understand how to complete them based on four questions: 1) Will users try the right action? 2) Will they notice the correct option? 3) Will they associate the action with the expected outcome? 4) Will they know progress is being made? It focuses on the perspective of a first-time user and identifies any issues with the user interface without testing actual users.