Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 226 of 333
- Power Assist Device (Power assist wheel, Pushrim-activated power-assisted wheelchair, PAPAW)
- A motorized attachment that adds electric propulsion assistance to a manual wheelchair without converting it into a full power wheelchair. Power assist devices typically attach to the wheelchair frame…
- Power Cards
- Power Cards are a visual teaching strategy developed by Elisa Gagnon for autistic learners and others with social-communication differences. A Power Card is a small, portable card that pairs a brief s…
- Power Dynamics (Power Differentials)
- The imbalance of influence, authority, or social status between individuals or groups that shapes their interactions and relationships. In accessibility research and practice, power dynamics between r…
- Power Dynamics in Accessibility (Access Power Relations)
- The ways in which power operates within the systems that govern assistive technology provision, disability services, and access to accommodations. Power dynamics manifest through institutional gatekee…
- Power Spectral Density (PSD, Power Spectrum)
- Power spectral density describes how the power of a time-varying signal is distributed across frequency components. It is a foundational tool in signal processing and shows up repeatedly in accessibil…
- Power Structures (Structural Power, Power Dynamics)
- The institutional, social, and economic arrangements that distribute power unevenly across groups in society, determining who has access to resources, decision-making authority, and the ability to def…
- Power Wheelchair (Electric Wheelchair, Motorized Wheelchair, Power Chair)
- A wheelchair propelled by an electric motor rather than manual pushing, essential for people with severe motor disabilities who lack the upper body strength or dexterity to operate a manual wheelchair…
- Power-Assist Add-On (Power Assist, Power-Assist Device, Wheelchair Power Assist)
- A power-assist add-on is a retrofit device attached to a manual wheelchair that provides motorized propulsion while preserving the chair's manual structure, offering a middle ground between manual and…
- Powered Wheelchair (Electric Wheelchair, Motorized Wheelchair, Power Chair)
- A wheelchair propelled by an electric motor and battery system rather than manual effort, typically controlled via a joystick or alternative input device. Powered wheelchairs are essential mobility ai…
- PrEmo (Product Emotion Measurement Instrument)
- A non-verbal self-report tool for measuring emotional responses, developed by Pieter Desmet. PrEmo presents users with 14 cartoon-like icons representing seven positive emotions (joy, admiration, prid…
- Practice Effects (Test-Retest Practice Effects, Familiarity Effects)
- Practice effects in cognitive assessment refer to the improvement in test scores that occurs not from genuine cognitive change but from increased familiarity with test content and format across repeat…
- Practice-based Learning (Iterative Practice)
- An approach to learning that organises instruction around short, repeatable cycles of attempting a task, receiving feedback, and refining performance, rather than around passive content consumption. P…
- Practice-based Research (PbR)
- A research approach, associated with Candy and Edmonds, in which creative practice itself is the vehicle for original inquiry and knowledge generation. Research questions arise from and are resolved t…
- Pragmatic Language (Pragmatics, Social Language)
- The aspect of language that deals with how context, social norms, and communicative intent shape how language is used and interpreted in real social interactions. Pragmatic language skills include und…
- Pragmatic language (Social language, Language pragmatics)
- The aspect of language concerned with how context, tone, social norms, and shared knowledge shape meaning beyond the literal words spoken or written. Pragmatic language skills include understanding sa…
- Pragmatics (Pragmatic Language)
- The social use of language—how context, relationship, and conversational norms affect what we say and how we interpret others. Pragmatics includes understanding implied meaning, adjusting speech for d…
- Pre-Programmed Message (Stored Message, Canned Response, Pre-Set Phrase)
- A message or phrase stored in an AAC device that can be quickly retrieved and spoken without requiring real-time composition. Pre-programmed messages trade expressiveness for speed—they enable faster …
- Pre-compensation (Display Pre-compensation, Image Pre-compensation)
- A technique in which images displayed on a computer screen are mathematically modified in advance to counteract the visual aberrations of the viewer's eye. Rather than relying on corrective lenses or …
- Pre-journey Learning (Pre-visit Spatial Learning, Virtual Pre-exploration)
- The practice of learning about an environment's spatial layout before physically visiting it, typically through tactile maps, verbal descriptions, or virtual exploration tools. For people who are blin…
- Pre-lingual Deafness (Pre-linguistic Deafness, Congenital Deafness)
- Deafness that occurs before a person acquires spoken language, either present from birth or developing in early childhood. People with pre-lingual deafness typically use sign language as their primary…