Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
Search results
- Character Error Rate(also: 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) needed to transform the system output into the reference text, divided by the…
- Chartability(also: 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 whether charts, graphs, maps, and other data visualizations are accessible to…
- Checklist Accessibility(also: 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) rather than as ongoing engagement with disabled users. Checklist accessibility can…
- CogTool
- A cognitive modeling tool developed at Carnegie Mellon University that generates quantitative predictions of human task performance times based on the Keystroke-Level Model (KLM) and the ACT-R cognitive architecture. Designers create storyboards of user interface screens and…
- Communicability
- A quality property of interactive systems proposed by Semiotic Engineering theory, referring to the system's ability to effectively and efficiently convey to users the designer's communicative intentions, logic, and underlying interaction principles. High communicability means…
- Conformance Evaluation(also: Conformance Assessment, Accessibility Conformance Testing)
- The process of systematically assessing whether a website, application, or digital product meets the requirements of a specific accessibility standard, typically WCAG at a designated conformance level (A, AA, or AAA). Conformance evaluation typically combines automated testing…
- Conformance Review(also: WCAG Conformance Review, Conformance Evaluation, Accessibility Conformance Review)
- A conformance review is a systematic evaluation of a website or web application against a specific set of accessibility guidelines, most commonly WCAG, to determine whether and to what level the content meets the standard's success criteria. The review process involves checking…
- Conformance Testing(also: Compliance Testing, Guideline Review)
- An accessibility evaluation method that checks whether a website or digital product meets the requirements specified by accessibility guidelines or standards such as WCAG. Conformance testing can be performed manually by human evaluators or through automated testing tools that…
- Correctness(also: Precision, Validity)
- In the context of accessibility evaluation, correctness (also called precision) is the proportion of reported accessibility problems that are true problems — that is, issues that genuinely affect users with disabilities rather than false positives. A high correctness rate means…
9 results.