Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 92 of 333
- Device Independence (Device-Independent Design, Input Agnostic Design)
- A web design principle that ensures content and functionality are accessible regardless of the input device or interaction method used to access them. Device-independent design avoids assumptions abou…
- Device Switching (Device Transition, Cross-Device Interaction)
- The process of moving between different computing devices to complete tasks, such as switching from a smartphone to a laptop or tablet. For people with motor impairments, particularly wheelchair users…
- Device-Dependent Event Handler (Device-Dependent Event, Mouse-Dependent Event Handler)
- An event handler in web development that is triggered only by a specific input device, such as a mouse click or touch gesture, rather than being accessible through multiple input methods. Device-depen…
- Dexter Model (Dexter Hypertext Reference Model)
- A reference model for hypertext systems published in 1988 that defines the fundamental concepts of components, links, anchors, and presentation specifications. The Dexter Model was created as a supers…
- Dexterity (Fine Motor Control, Manual Dexterity)
- The ability to perform precise, coordinated movements with the hands and fingers, including gripping, pinching, typing, and manipulating small objects. Dexterity is distinct from gross motor function …
- Dexterity Impairment (Dexterity Difference, Reduced Dexterity, Fine Motor Impairment)
- A reduction in the ability to perform precise, coordinated movements with the hands and fingers, which can range from mild to severe and may be permanent, intermittent, or transient. Dexterity impairm…
- Diabetic Retinopathy (DR)
- A complication of diabetes that damages the blood vessels of the retina, potentially causing vision loss ranging from mild blurriness to complete blindness. Diabetic retinopathy can produce scattered …
- Diagnostic Bias (Assessment Bias)
- Systematic errors in the diagnostic process that lead to certain groups being more or less likely to receive a particular diagnosis based on characteristics unrelated to the condition itself, such as …
- Diagnostic Overshadowing
- A clinical phenomenon in which the symptoms or behaviours of a person with a disability are incorrectly attributed to their existing disability rather than being recognised as signs of a separate cond…
- Diagram Accessibility (Accessible Diagrams, Scientific Diagram Accessibility)
- The practice of making visual diagrams — including scientific figures, flowcharts, organizational charts, and technical schematics — accessible to people with visual impairments, learning disabilities…
- Dialog Act (Dialogue Act, Speech Act)
- A classification label representing the communicative intention behind a spoken or written utterance in a conversational system. In the context of accessible technology, dialog acts are used to interp…
- Dialog Interface (Dialogue Interface, Conversational Interface)
- A user interface paradigm in which interaction occurs through a structured exchange of prompts and responses, typically using speech or text. In assistive technology contexts, dialog interfaces presen…
- Dialogue Design (Interaction Dialogue, User Dialogue Design)
- Dialogue design in human-computer interaction refers to the structured planning of the conversational exchange between a user and a system, defining how input is accepted, how the system responds, and…
- Dialogue of Care (Care Dialogue, Care Communication)
- The ongoing exchange of information, observations, and concerns between a person receiving care and their carers — whether professional, familial, or informal. In assistive technology and telecare con…
- Diaphragmatic Breathing (Belly Breathing, Abdominal Breathing)
- A breathing technique that emphasises movement of the abdominal wall and diaphragm during inspiration rather than the accessory muscles of the neck and shoulders. By engaging the diaphragm more fully,…
- Diarization (Speaker Diarization, Speaker Segmentation)
- The process of automatically determining "who spoke when" in an audio or video recording by segmenting the audio stream and assigning each segment to a specific speaker. In accessibility contexts, dia…
- Diary Study (Diary Method, Experience Sampling)
- A longitudinal research method in which participants record their experiences, behaviors, and reflections over an extended period (days to weeks) while interacting with a system or technology in their…
- Dichoptic presentation (Dichoptic display, Dichoptic filtering, Dichoptic stimulation)
- A technique in which different visual information is presented separately to each eye, typically using color-filtered glasses (red-cyan or red-green anaglyph), polarized lenses, or head-mounted displa…
- Dichromacy (Dichromatic Vision)
- A category of colour vision deficiency in which one of the three types of cone cells is completely absent, reducing colour perception to two primary channels instead of three. The three forms are prot…
- Dichromat (Dichromacy, Dichromatic Vision)
- A person with colour vision based on only two types of functional cone cells in the retina instead of the typical three, resulting in a reduced ability to distinguish certain colours. Dichromats perce…