Usability Evaluation Methods in Interactive Systems

Usability evaluation encompasses a suite of approaches designed to assess how effectively, efficiently and satisfactorily users can interact with digital products and services. Interactive systems range from e-commerce websites and mobile applications to complex enterprise and medical software. Broadly speaking, evaluation methods fall into two categories: expert-based analyses and user-based tests. Expert-based methods, such as heuristic evaluation and cognitive walkthrough, rely on practitioners’ knowledge of design principles to anticipate potential usability problems. User-based methods, including usability testing with think-aloud protocols and physiological measures like eye-tracking, gather empirical evidence of actual user behaviour. Each technique offers unique insights: expert reviews tend to identify a wide spectrum of issues quickly, whereas user tests reveal genuine interaction patterns, task performance metrics and subjective satisfaction. Increasingly, researchers advocate hybrid strategies that combine expert analysis and user observation to capture both the breadth and depth of usability challenges. By aligning evaluation with recognised usability attributes—effectiveness, efficiency, learnability and satisfaction—practitioners can prioritise improvements, reduce development risk and ensure that interactive systems are accessible and intuitive across diverse contexts and cultures.

Research from Nature Portfolio

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Research from all publishers

Recent work has demonstrated the advantages of combining complementary methods to achieve a more comprehensive diagnosis of usability issues. One study explored the joint use of expert heuristic evaluation and concurrent think-aloud testing on a hospital information system, showing that each method uniquely captured high-severity problems in domains such as error prevention and task efficiency. Another investigation compared heuristic evaluation with cognitive walkthrough on a clinical nursing module, finding that heuristic reviews uncovered a greater number of minor issues, while walkthroughs isolated fewer but more critical learnability and satisfaction barriers. A separate experimental assessment of two e-commerce websites employed a blend of heuristic inspection, standard usability testing and eye-tracking, revealing that eye-movement data exposed layout and attention problems that were missed by traditional approaches. These findings underscore the value of methodological pluralism: by integrating expert heuristics, task-based user testing and behavioural measurement, researchers and practitioners can validate design hypotheses, quantify user performance and derive actionable guidance for interface refinement.

Usability Evaluation Methods in Interactive Systems publication trend

The graph below shows the total number of articles in usability evaluation methods in interactive systems across all publications each year (not limited to Nature Index journals).

Technical terms

Heuristic evaluation: An expert-based inspection method that identifies usability problems by checking interfaces against recognised design principles.

Cognitive walkthrough: A step-by-step expert analysis focusing on a user’s task flow to uncover barriers in learning and error recovery.

Think-aloud protocol: A user-based testing approach in which participants verbalise their thoughts while performing tasks, revealing cognitive processes and pain points.

Eye-tracking: A behavioural measurement technique that records users’ gaze patterns to highlight areas of interest, confusion or oversight in interface layouts.

References

1. A combination of two methods for evaluating the usability of a hospital information system. BMC Medical Informatics and Decision Making (2020).
2. Comparison of usability evaluation methods for a health information system: heuristic evaluation versus cognitive walkthrough method. BMC Medical Informatics and Decision Making (2022).
3. Combinations of Methods for Collaborative Evaluation of the Usability of Interactive Software Systems. Advances in Human-Computer Interaction (2016).
4. Usability Evaluation using Eye-Tracking on E-Commerce and Education Domains. Journal of Information Technology and Computing (2020).