Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- HHS Usability Guidelines(also: Research-Based Web Design and Usability Guidelines, Usability.gov Guidelines)
- A comprehensive set of evidence-based web design and usability guidelines published by the U.S. Department of Health and Human Services (HHS). The guidelines cover areas including homepage design, page layout, navigation, scrolling, headings, links, text appearance, content…
- Haptic Experience Model(also: HX Model, HX)
- A framework proposed by Kim and Schneider for evaluating user experience with haptic technologies along five perceptual-experiential dimensions: autotelics (the pleasantness of the sensation), realism (fidelity to the depicted phenomenon), harmony (fit with accompanying…
- Heat Map(also: Heatmap, Attention Map, Gaze Map)
- A data visualization technique that uses colour intensity to represent the distribution and density of user attention or interaction on a page or interface. In eye tracking research, heat maps aggregate fixation data from multiple users, with warmer colours (red, orange)…
- Heuristic Evaluation(also: Expert Review, Heuristic Review)
- A usability inspection method in which a small group of expert reviewers evaluate a user interface against a set of established design principles or heuristics. Originally developed by Jakob Nielsen, the method is widely used in accessibility assessment where experts review…
- Heuristic evaluation(also: Expert review, Usability inspection)
- A usability and accessibility evaluation method where trained evaluators systematically assess an interface against a set of recognized principles or guidelines (heuristics) to identify potential problems. In accessibility contexts, heuristic evaluation applies principles from…
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