Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 143 of 333
- Hermeneutical Injustice
- Hermeneutical injustice, a concept developed by philosopher Miranda Fricker, is a form of epistemic injustice in which a person's experience is unintelligible to themselves or others because the colle…
- Heuristic Evaluation (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, …
- Heuristic Evaluation (Expert Review, Heuristic Review)
- An accessibility or usability evaluation method in which evaluators examine an interface against a set of recognised principles (heuristics) to identify potential problems. In web accessibility, heuri…
- Heuristic Transcoding (Rule-based Transcoding)
- Heuristic transcoding is the automated transformation of web content to improve accessibility, device compatibility, or readability using a fixed set of predefined rules that inspect the page structur…
- Heuristic Walkthrough (Heuristic walk-through)
- A usability evaluation method proposed by Andrew Sears (1997) that combines scenario-based cognitive walkthrough with heuristic evaluation. Evaluators work through realistic user tasks using a priorit…
- Heuristic evaluation (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 prob…
- Hick-Hyman Law (Hick's Law)
- A principle from experimental psychology stating that the time it takes a person to make a decision increases logarithmically with the number of available choices. In accessibility and interface desig…
- Hidden Labour of Disability (Invisible Work of Disability, Disability Labour)
- The unrecognized time, effort, and energy that disabled people must invest to navigate inaccessible environments, use assistive technologies, manage care relationships, and participate in activities t…
- Hidden Markov Model (HMM)
- A statistical model used extensively in pattern recognition where the system being modeled is assumed to follow a Markov process with hidden (unobserved) states. HMMs have been foundational in both au…
- Hierarchical Task Analysis (HTA)
- A structured method for describing and analyzing tasks by breaking them down into goals, sub-goals, and operations in a hierarchical tree structure. Originally developed for industrial and safety-crit…
- Hierarchy of Impairment (Hierarchy of Impairments, Disability Hierarchy)
- The hierarchy of impairment refers to the phenomenon where certain types of disabilities and impairments are viewed more favorably or given greater attention than others, both by non-disabled people a…
- High Contrast Mode (High Contrast, High Contrast Display)
- An operating system or browser display setting that increases the visual distinction between foreground and background elements by using a limited colour palette with strongly contrasting colours, typ…
- High-Functioning Autism (HFA, HFASD)
- A historically used term describing individuals with autism spectrum disorder who have average or above-average intellectual abilities and can communicate verbally. The term is now considered outdated…
- High-Stakes Scenarios (Safety-Critical Scenarios)
- Situations where errors in AI-generated information could lead to significant safety, health, financial, or social consequences. In the context of visual access technology for BLV users, high-stakes s…
- High-Tech AAC (Electronic AAC, Speech-Generating Device)
- Augmentative and alternative communication systems that use electronic or digital technology to support communication, including speech-generating devices, tablets with AAC software, smartphones with …
- Higher Education Accessibility (University Accessibility, Postsecondary Accessibility)
- The policies, practices, accommodations, and technologies that ensure students with disabilities can participate fully and equitably in college and university programs. Higher education accessibility …
- Hijax (Progressive enhancement with Ajax)
- A web development approach coined by Jeremy Keith that applies progressive enhancement principles to Ajax applications. Hijax starts with a fully functional, accessible HTML page and then layers Ajax …
- Histogram of Oriented Gradients (HOG)
- A feature descriptor technique used in computer vision for object detection that counts occurrences of gradient orientations in localized portions of an image. HOG captures edge and texture informatio…
- Hofstede Cultural Dimensions (Hofstede’s Cultural Dimensions, Hofstede Model)
- A framework by social psychologist Geert Hofstede characterising national cultures along dimensions such as Power Distance, Uncertainty Avoidance, Individualism versus Collectivism, Masculinity versus…
- Holistic Accessibility (Holistic Approach to Accessibility)
- Holistic accessibility is an approach that considers web accessibility not as an isolated technical concern but as one factor within a broader context including usability, user experience, audience ch…