Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- SERPA(also: Streamlined Evaluation and Reporting Process for Accessibility)
- A programmer-centric methodology for conducting and reporting website accessibility evaluations, proposed by Law, Jacko, and Edwards in 2005. SERPA restructures the traditional accessibility evaluation process around the needs and constraints of the developers who must implement…
- Scenario-Based Evaluation(also: Path-Based Testing, User Journey Testing)
- An accessibility evaluation approach that assesses the complete user experience across a sequence of steps needed to accomplish a task, rather than testing individual pages in isolation. For example, evaluating an e-commerce checkout means testing every step from product search…
- Screen Reader Proxy
- An interface that sits between an automated agent or testing tool and an application, translating programmatic inputs (swipe, double-tap, type) into genuine screen reader gestures and capturing the resulting announcements as structured transcripts. Unlike driving an app via its…
- Semi-Automatic Evaluation(also: Semi-Automated Testing, Guided Manual Evaluation)
- An approach to accessibility evaluation that combines automated checks with human expert judgment. Semi-automatic tools run algorithmic tests to detect issues that can be identified programmatically — such as missing alt text or invalid ARIA attributes — and then guide the…
- Semiotic Inspection Method(also: SIM, MIS)
- An evaluation method from Semiotic Engineering theory that systematically assesses the communicability of an interactive system by examining how well the designer's intended message is conveyed through the interface. The evaluator analyzes three types of interface signs…
- Sensitivity(also: Recall, Thoroughness, Completeness)
- In the context of accessibility evaluation, sensitivity (also called recall or thoroughness) is the proportion of true accessibility problems that are successfully identified and reported by an evaluator. High sensitivity means that most real barriers are found, while low…
- Structured Walkthrough(also: Guided Walkthrough, Accessibility Walkthrough)
- An accessibility evaluation method in which an evaluator is guided through a systematic series of checks using predefined steps, instructions, and heuristics. Unlike a full WCAG conformance review which requires expert knowledge to interpret success criteria, a structured…
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