Glossary

Search results

NASA Task Load Index(also: NASA-TLX, Task Load Index)

A widely used subjective workload assessment tool developed by NASA that measures perceived workload across six dimensions: mental demand, physical demand, temporal demand, performance, effort, and frustration. Participants rate each dimension on a scale, providing a…

NASA Task Load Index(also: NASA-TLX, TLX)

A widely used subjective workload assessment tool developed by NASA that measures perceived workload across six dimensions: mental demand, physical demand, temporal demand, performance, effort, and frustration. In accessibility research, NASA-TLX is frequently employed to…

NGOMSL(also: Natural GOMS Language)

A structured notation for writing GOMS (Goals, Operators, Methods, Selection rules) models in a program-like form that is readable by humans. NGOMSL was developed by David Kieras as a more formal variant of GOMS that includes selection rules and allows operators at the keystroke…

Navigability(also: Ease of Navigation, Web Navigability)

The ease and efficiency with which a user can move through a web page, application, or document to reach their intended content. For accessibility practice, navigability is a primary determinant of whether a screen-reader, voice-browser, or keyboard-only user can actually…

Novelty Effect(also: Novelty bias)

A research-methodology concept describing the tendency for users to behave differently with a new technology simply because it is new, rather than because of its enduring value. Novelty effects inflate short-term engagement, enthusiasm, and usage, then fade as the technology…

5 results.