Σύγκριση μεθόδων

	Γνωστική Διερεύνηση (Cognitive Walkthrough)	Ευριστική Αξιολόγηση	Πρωτόκολλο Σκέψης σε Φωναχτή Έκφραση (Think-Aloud Protocol)
Πεδίο	Αλληλεπίδραση Ανθρώπου-Υπολογιστή	Αλληλεπίδραση Ανθρώπου-Υπολογιστή	Αλληλεπίδραση Ανθρώπου-Υπολογιστή
Οικογένεια	Hypothesis test	Hypothesis test	Hypothesis test
Έτος προέλευσης	1990	1990	1980
Δημιουργός	Clayton Lewis, Peter Polson, Cathleen Wharton, John Rieman	Jakob Nielsen and Rolf Molich	K. Anders Ericsson and Herbert A. Simon, adapted to HCI by Clayton Lewis
Τύπος	Evaluative walkthrough examining how users learn to use an interface	Expert-based inspection using established design principles	Protocol for capturing user cognition and decision-making during task execution
Θεμελιώδης πηγή	Lewis, C., Polson, P. G., Wharton, C., & Rieman, J. (1990). Testing a walkthrough methodology for specifying and evaluating user interface designs. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (pp. 387–392).	Nielsen, J. (1994). Heuristic evaluation of user interfaces. In Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (pp. 249–256).	Ericsson, K. A., & Simon, H. A. (1980). Verbal reports as data. Psychological Review, 87(3), 215–251.
Εναλλακτικές ονομασίες	Cognitive Walkthrough, CW Analysis	HE, Expert Evaluation, Nielsen's Heuristics	Talk-Aloud Protocol, Concurrent Thinking Aloud, TA
Συναφείς	4	4	4
Σύνοψη	Cognitive Walkthrough is an inspection method for evaluating interface designs by simulating and analyzing how users will learn to use a system through exploration and trial. Developed by Clayton Lewis, Peter Polson, Cathleen Wharton, and John Rieman in 1990, this method is grounded in cognitive psychology and focuses specifically on learnability—whether first-time or occasional users can discover how to perform tasks without formal training. Evaluators role-play user actions, answer a set of critical questions about feedback and discovery at each step, and document usability problems.	Heuristic Evaluation is a usability inspection method in which small teams of expert evaluators examine an interface and judge its compliance with established usability principles (heuristics). Developed by Jakob Nielsen and Rolf Molich in 1990, this method is rapid and low-cost, identifying 60–90% of usability problems with as few as 3–5 evaluators. Nielsen's Ten Usability Heuristics—visibility of system status, match between system and real world, user control and freedom, consistency and standards, error prevention and recovery, recognition over recall, flexibility and efficiency, aesthetic and minimalist design, error recovery, and documentation—form the basis of most evaluations.	The Think-Aloud Protocol is a usability testing method in which participants verbalize their thoughts while completing tasks on a system. As users navigate an interface, they continuously narrate their observations, interpretations, and reasoning, allowing researchers to understand their mental models, decision-making, and frustration points. Originating from cognitive psychology research by Ericsson and Simon (1980), this method was adapted for HCI by Clayton Lewis and has become one of the most widely used techniques for identifying usability problems and understanding user behavior.