Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Barrier Walkthrough(also: BW Method)
- The Barrier Walkthrough is a structured expert evaluation method for assessing web accessibility in which evaluators systematically examine a website against a predefined set of accessibility barriers rather than individual guideline success criteria. Unlike conformance-based…
- Barrier Walkthrough(also: Structured Walkthrough)
- A systematic accessibility evaluation method that guides evaluators through the process of identifying barriers that people with disabilities may encounter on a website. Unlike a standard conformance review that checks against all WCAG success criteria, a barrier walkthrough…
- Behaviour-Driven Development(also: BDD, Behavior-Driven Development)
- A software development methodology that extends Test-Driven Development by writing test cases as human-readable scenarios in natural language, describing expected system behaviour from the user's perspective. BDD test scenarios typically follow a Given-When-Then format that…
- Blackboard Ally(also: Ally)
- A commercial accessibility-checking and alternative-format-generation service from Anthology (Blackboard) that integrates with learning management systems such as Blackboard Learn, Canvas, Moodle, and Brightspace. Ally scans uploaded course materials, reports accessibility…
- Blurred Vision Simulation(also: Vision Simulation, Low Vision Simulation)
- A technique used in accessibility evaluation where evaluators simulate the visual experience of people with reduced visual acuity by artificially blurring their view of a website or application. Methods include using low vision simulation glasses (commercially available from…
- Bobby(also: Bobby Worldwide, Watchfire Bobby)
- Bobby was one of the earliest and most widely used automated web accessibility testing tools, developed by the Center for Applied Special Technology (CAST) and later acquired by Watchfire (subsequently IBM). Launched in the mid-1990s, Bobby checked web pages against WCAG 1.0…
- Brickfield Accessibility Toolkit(also: Brickfield Toolkit)
- An accessibility scanning and reporting tool for Moodle developed by Brickfield Education Labs. It is distributed on a freemium model: a community-edition set of scanners is integrated into the Moodle core Accessibility Toolkit, while advanced institutional features (bulk…
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