手法を比較

	インターフェースユーザビリティ測定 (IUM)	認知負荷尺度 (CLS)
分野	人間工学	人間工学
系統	Process / pipeline	Process / pipeline
提唱年	1986	1992
提唱者	John Brooke, James R. Lewis	Fred Paas
種類	Self-report	Self-report
原典	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.	Paas, F. G. W. C. (1992). Training strategies for attaining transfer of problem-solving skill in statistics: A cognitive-load approach. Journal of Educational Psychology, 84(4), 429–434.
別名	IUM, Usability Assessment, System Usability Scale	CLS, Paas Scale
関連	4	4
概要	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.	The Cognitive Load Scale (CLS), developed by Fred Paas in 1992 and refined by Paas and colleagues in subsequent years, is a brief, single-item or multi-item self-report instrument for assessing the cognitive load (mental effort) imposed by a learning or task environment. Originating in cognitive load theory research, the CLS has become a fundamental measurement tool in educational psychology, instructional design, and human factors, used to evaluate how instructional materials, interface designs, or training methods affect learner or operator mental burden.