Glossary
Searchable terminology from accessibility, web standards, and related fields.
6660 terms — page 55 of 333
- Chairable Technology (Chairable Input, Chairable Devices)
- Input devices and interactive technologies designed to integrate with the form of a wheelchair, analogous to how wearable technology fits with an individual's clothing. Chairable technology recognises…
- Chairable computing (Chairable input, Wheelchair-integrated computing)
- A design paradigm in which input devices and computing interfaces are integrated into the form factor of a wheelchair — particularly armrests, trays, and frames — analogous to how wearable computing f…
- Challenge-Point Framework
- A motor-learning theory proposed by Guadagnoli and Lee (2004) which holds that learning is optimised when the difficulty of a task is appropriately matched to the learner's current skill level. Tasks …
- Challenging Behavior (Problem Behavior, Behaviors of Concern)
- Actions by individuals with intellectual or developmental disabilities that pose risks to themselves or others, or significantly interfere with daily activities and learning. In the context of autism,…
- ChamBadge (Chambadge)
- A wearable accessible cell phone device developed as part of the Talking Braille ubiquitous computing system for indoor wayfinding. The ChamBadge combines a cell phone with a bone-conduction headset, …
- Change Blindness (Changeblindness, Inattentional Blindness)
- Change blindness is a perceptual phenomenon in which observers fail to notice changes to a visual scene when the change coincides with a visual disruption such as an eye movement, blink, or brief occl…
- Change Management (Organizational Change Management)
- A structured approach for transitioning individuals, teams, and organizations from a current state to a desired future state. In accessibility, change management addresses the human and organizational…
- Character Error Rate (CER)
- A metric for evaluating automatic speech recognition (ASR) and optical character recognition (OCR) accuracy, measuring the minimum number of character-level edits (insertions, deletions, substitutions…
- Character Recognition
- In the context of reading and cognitive accessibility, character recognition refers to the ability to correctly identify and distinguish individual letters and numbers. People with dyslexia often expe…
- Character Spacing (Letter Spacing, Tracking)
- The horizontal space between individual characters in a line of text. Research has shown that increasing character spacing significantly improves reading speed and accuracy for people with dyslexia. T…
- Charge-Coupled Device (CCD)
- An electronic light sensor used in cameras and scanners that converts light into electrical signals. CCDs capture images by accumulating electric charge in proportion to the intensity of light hitting…
- Charity Model of Disability (Charity Model)
- A framework that views people with disabilities as helpless victims who are dependent on the goodwill and benevolence of others. Under this model, disability is treated as a tragedy requiring charitab…
- Chart Question Answering (Chart QA, ChartQA, Visual Question Answering for Charts)
- The task of answering natural-language questions about a data visualization, typically a chart provided as an image or structured specification. A chart question answering system must identify the cha…
- Chartability (Chartability Heuristics)
- A set of heuristics for assessing the accessibility of data visualizations, developed by Frank Elavsky and the Dataviz Accessibility group. Chartability provides a systematic framework for evaluating …
- ChatGPT (GPT, OpenAI ChatGPT)
- ChatGPT is a conversational generative AI assistant developed by OpenAI, based on the GPT family of large language models. Users interact via a text chat interface and, in newer versions, through voic…
- ChatGPT Accessibility (GenAI Accessibility)
- The degree to which ChatGPT and similar generative AI interfaces can be effectively used by people with disabilities, including compatibility with screen readers, keyboard navigation, and non-visual i…
- Chatbot (Virtual Assistant, Conversational Agent, Dialog System)
- A software application that uses text or speech to conduct conversations with users, simulating human-like dialogue to provide information, perform tasks, or guide users through processes. In accessib…
- Chatbot Accessibility (Accessible Chatbot Design, CUI Accessibility)
- The practice of designing chatbots and conversational user interfaces (CUIs) to be usable by people with disabilities. Chatbot accessibility presents unique challenges compared to traditional web acce…
- Checklist Accessibility (Checklist Conformism, Checklist Compliance)
- A critique of accessibility practice in which organisations treat accessibility as a set of discrete technical checks to be ticked off (alt text present, ARIA labels declared, contrast ratios met) rat…
- Checkpoint (WCAG Checkpoint, Success Criterion, Accessibility Checkpoint)
- A checkpoint is a specific, testable accessibility requirement in a set of guidelines — for example, 'provide a text equivalent for every non-text element' is WCAG 1.0 checkpoint 1.1. The term is stro…