Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Input Exertion(also: Input Effort, Interaction Cost)
- The physical and cognitive effort required to provide input to a digital system, including keystrokes, mouse movements, taps, and voice commands. For people with motor impairments, input exertion is a critical accessibility concern because even small inefficiencies — such as…
- Integrated Control System(also: Integrated Control)
- An assistive technology approach where a single input device serves multiple control functions, such as wheelchair navigation, mouse cursor control, and text entry. Integrated control systems reduce the number of separate devices a person with a disability must manage, lowering…
- Isometric Gesture(also: Isometric Contraction Gesture)
- An isometric gesture is a gesture in which a person activates their muscles without producing visible movement — the body position remains static while muscle tension changes. This contrasts with isotonic gestures, where visible hand or arm movement occurs over time. Isometric…
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