Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 89 of 333
- Delphi Method (Delphi Technique, Delphi Interview)
- A structured research technique originally developed by the RAND Corporation for forecasting, in which a panel of experts participates in multiple rounds of questioning to reach consensus on a topic. …
- Demand Avoidance (Pathological Demand Avoidance, PDA, Persistent Drive for Autonomy)
- An inner resistance to perceived demands — even self-imposed ones — that can lead to inability to start, change, or complete tasks. Demand avoidance is associated with an autism profile sometimes call…
- Demand Characteristics
- Cues within a research study that signal to participants what the researcher expects or hopes to find, leading participants to adjust their behavior or responses to meet those perceived expectations. …
- Dementia (Major neurocognitive disorder)
- An umbrella term for a group of symptoms related to progressive decline in memory, thinking, behaviour, and the ability to perform everyday activities, caused by diseases or injuries affecting the bra…
- Dementia
- A group of progressive neurological conditions that affect memory, thinking, orientation, comprehension, language, and judgment. Alzheimer's disease is the most common form. Dementia significantly imp…
- Dementia Advocacy (Dementia self-advocacy)
- Dementia advocacy encompasses efforts by people living with dementia, caregivers, and allies to promote more inclusive, dignified, and rights-based understandings of dementia in public discourse, poli…
- Dementia-Friendly (Dementia Friendly Community, Dementia Inclusive)
- An approach to designing environments, services, programs, and communities that are accessible, supportive, and inclusive of people living with dementia. A dementia-friendly community enables people w…
- Dementia-Friendly Community (Dementia Friendly Community)
- An approach to inclusion in which public spaces, services, programs, and technologies are designed so that people living with dementia can continue to participate as active community members - shoppin…
- DementiaBank
- A shared database of multimedia interactions for the study of communication in dementia, maintained as part of the TalkBank system. DementiaBank contains longitudinal recordings of people with Alzheim…
- Deployment Study (Field Deployment, In-the-Wild Study)
- A research method where technology is placed in users' real-world environments for an extended period to observe natural usage patterns, adoption behaviors, and long-term experiences. Unlike controlle…
- Depression (Major Depressive Disorder, Clinical Depression)
- A mental health condition characterized by persistent feelings of sadness, hopelessness, and loss of interest in activities. Depression can significantly impact cognitive function, including concentra…
- Depth Camera (Depth Sensor, RGB-D Camera, 3D Camera)
- A depth camera is a device that captures both standard visual imagery and per-pixel distance information, producing a 3D representation of the scene. Technologies include structured light (projecting …
- Depth Estimation (Monocular Depth Estimation, Depth Prediction)
- The computer vision task of predicting the distance from the camera to each point in a scene, producing a depth map in which each pixel carries a distance value. Monocular depth estimation uses a sing…
- Depth Perception (Stereopsis)
- The visual ability to perceive the relative distance of objects in three-dimensional space. Depth perception relies on binocular vision and other visual cues. Reduced depth perception can affect a per…
- Depth Sensing (Depth Perception (computer vision), 3D Sensing)
- The ability of a sensor or system to measure the distance from itself to objects in the scene, producing a depth map or point cloud rather than a flat image. Common approaches include stereo vision (t…
- Depth Sensor (Depth Camera, RGB-D Sensor, 3D Sensor)
- A device that captures three-dimensional depth information about a scene in addition to standard two-dimensional imagery. Depth sensors measure the distance from the camera to objects in the environme…
- Description Logic (DL, Description Logics)
- A family of formal knowledge representation languages used as the mathematical foundation for ontology languages like OWL. Description logics describe a domain in terms of individuals (specific entiti…
- Description Variation (AD Variation, Alternative Description)
- Multiple versions of audio descriptions for the same video content, each reflecting different stylistic choices, levels of detail, or narrative focuses. Description variations recognize that BLV users…
- Descriptive Labels (Descriptive Naming, Semantic Labels)
- Text labels for visual options (such as fonts, colors, and filters) that describe their perceptual or aesthetic qualities rather than simply providing a technical name. For example, labeling a font as…
- Descriptive Video Service (DVS, Described Video)
- A service that provides audio descriptions of visual content in television programs, films, and other video media for blind and low-vision viewers. Originally developed by WGBH in Boston in the 1980s,…