Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 91 of 333
- Design probe (Technology probe, Cultural probe)
- A research methodology in human-computer interaction where a prototype or artefact is deployed with participants not primarily to test usability, but to provoke reflection, surface unanticipated needs…
- Design space (Interaction modality)
- A medium, physical or abstract, through which a user and a device exchange information. The visual design space uses sight (screens, displays), the sonic design space uses hearing (speech, earcons, mu…
- Design space properties
- The characteristics of information within a design space, classified by the type of cognitive processing they require. Direct properties relate to perception and automatic processing — colour, brightn…
- Design space structure
- A framework characterising how raw information is organised within a design space. Nesbitt classifies information conveyed through sensory channels as nominal (categorical, such as labels), quantitati…
- Design-Based Research (DBR)
- A collaborative, iterative research methodology used in education and human-computer interaction that develops theory and refines interventions through cycles of design, implementation, evaluation, an…
- Design-for-One (Design for One, Bespoke Design)
- A design philosophy where systems are tailored to individual users rather than attempting to accommodate all users through a single universal solution. In contrast to universal design which seeks one …
- Designing with Friction (Friction by Design)
- An HCI design stance, associated with Matthias Korn and Amy Voida, that argues for deliberately introducing friction into interactive systems to surface politics, provoke reflection, and enable democr…
- Desire Paths (Desire lines)
- A term from urban design describing the unofficial trails that pedestrians wear into grass or dirt when built sidewalks do not meet their needs - the visible trace of an infrastructure users have impr…
- Detectable Warnings (Detectable Warning Surfaces, Tactile Warning Surfaces)
- Detectable warnings are standardised tactile surface features installed on walking surfaces to alert people with visual impairments to hazards or transitions — most commonly the edge of a transit plat…
- Deuteranomaly (Deutan Anomalous Trichromacy)
- The most common type of colour vision deficiency, where the medium-wavelength (green) cone cells have a shifted sensitivity range. Deuteranomaly is a milder form of deutan CVD compared to deuteranopia…
- Deuteranopia (Deutan Dichromacy, Green-Blind)
- A type of colour vision deficiency caused by the complete absence of medium-wavelength (green) cone cells in the retina. Deuteranopia is the most common form of dichromacy, causing difficulty distingu…
- Developmental Apraxia of Speech (Childhood Apraxia of Speech, CAS, DAS, Verbal Dyspraxia)
- A motor speech disorder in which children have difficulty planning and coordinating the movements needed for speech, despite having no muscle weakness. Children with developmental apraxia of speech kn…
- Developmental Delay (Developmental Disability, Global Developmental Delay)
- A condition in which a child does not reach developmental milestones — such as motor skills, speech, social skills, or cognitive abilities — at the expected ages. Developmental delay may affect one or…
- Developmental Disability (DD, Developmental Disabilities)
- A group of conditions arising from impairments in physical, learning, language, or behavioral areas that begin during the developmental period, typically before age 22, and are expected to be lifelong…
- Developmental Learning Disorder (DLD, Specific Learning Disorder, Learning Disability)
- A group of neurodevelopmental conditions that affect the acquisition and use of specific academic skills such as reading, writing, or mathematics. Developmental Learning Disorders include dyslexia (af…
- Developmental disability (Developmental disorder)
- A group of conditions resulting from impairments in physical, learning, language, or behavioural areas that begin during the developmental period, are usually lifelong, and affect day-to-day functioni…
- Developmental screening (Early developmental screening, Autism screening)
- A brief, standardized assessment process used to identify infants and young children who may be at risk for developmental delays or disabilities, including autism spectrum disorder. Common screening i…
- Device Abandonment (Technology Abandonment, AT Abandonment)
- The phenomenon where users stop using an assistive technology device after initial adoption. In AAC, abandonment rates are notably high and stem from multiple factors including devices that do not mat…
- Device Customization (AT Customization, Personalization)
- The process of modifying or tailoring an assistive device to meet the specific physical, cognitive, or sensory needs of an individual user. Customization can range from simple adjustments like resizin…
- Device Fit (AT Fit, Assistive Device Fit)
- The degree to which an assistive technology device matches the physical, cognitive, and contextual needs of its user. Good device fit encompasses physical dimensions, grip requirements, material prope…