Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Task Completion Time(also: TCT, Time on Task)
- A key usability metric measuring the time a user takes to complete a specific task from start to finish. In accessibility research, task completion time is one of the primary measures for comparing the efficiency of different assistive technology approaches or interaction…
- Think Aloud(also: Think-Aloud Protocol, Verbal Protocol, Concurrent Think Aloud)
- A research methodology where participants verbalize their thoughts while performing a task, providing insight into cognitive processes that would otherwise be unobservable. In accessibility research, think-aloud protocols are commonly used during usability testing to understand…
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