Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Fitts' Law(also: Fitts Law)
- A predictive model of human movement in human-computer interaction that states the time required to move to a target area is a function of the distance to the target and the size of the target. Specifically, larger and closer targets are faster to acquire than smaller and more…
- Fitts's Law(also: Fitts Law)
- A predictive model of human movement that describes the time required to rapidly move to a target area as a function of the distance to the target and the size of the target. Formulated by Paul Fitts in 1954, the law states that movement time increases logarithmically as the…
- Fitts's Law(also: Fitts Law, Fitts' Law)
- A predictive model of human movement that describes the time required to rapidly move to a target area as a function of the distance to the target and the target's size. Smaller and more distant targets take longer to reach and are more prone to errors. In accessibility, Fitts's…
- Formative Evaluation(also: Formative Usability Testing, Formative Assessment)
- Usability evaluation conducted early in the design process using prototypes, mockups, or wireframes to identify design problems and inform improvements. Formative testing is qualitative and iterative, focusing on understanding user behavior and identifying issues rather than…
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