Interface Usability Measure
Interface Usability Measure (IUM), exemplified by the System Usability Scale (SUS) developed by John Brooke in 1986 and extended by Lewis and others, is a rapid, single-scale or multi-item assessment of perceived interface usability. IUM captures how easy, intuitive, and satisfying users find an interactive system, ranging from 10-item SUS questionnaires to custom domain-specific usability measures. IUM is widely used in software development, web design, and human-factors research to quantify user perception of system ease-of-use and guide iterative interface improvement.
Source record
Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.
- Brooke, J. (1986). System Usability Scale (SUS): A quick and dirty usability scale. In B. Weerdmeester & M. Evaluating the Usability of Human-Computer Interfaces (pp. 5-7). IOS Press. · URL
- Lewis, J. R. (1995). IBM Computer Usability Satisfaction Questionnaires: Psychometric evaluation and recommendations. International Journal of Human-Computer Interaction, 7(1), 57–78. · DOI 10.1080/10447319509526110
Curated claims
Claims persisted in the evidence ledger, each with its own assessment.
This view does not invent a claim assessment when the ledger has none.
Related methods
Generated from the method graph and shown as machine-suggested relations — no evidence claim is inferred.