What three dimensions define usability?
Usability is assessed through effectiveness, efficiency, and satisfaction.
Study 7 Usability Evaluation Methods with 12 free online flashcards. Review key terms, definitions, and concepts with this interactive flashcard deck.
What three dimensions define usability?
Usability is assessed through effectiveness, efficiency, and satisfaction.
What happens in a heuristic evaluation?
Evaluators inspect an interface and compare it with usability principles, or heuristics, to identify likely problems.
What is usability testing?
Usability testing observes intended users attempting representative tasks and records what they do, including successes, errors, delays, and confusion.
What defines a task-based assessment?
Task-based assessment evaluates performance against defined user goals, using predetermined criteria and measures.
What should be specified for each assessed task?
Define what counts as success, which errors or detours matter, and which measures to collect.
How should usability problem severity be judged?
Prioritize consequential barriers by considering how often they occurred, how much they obstructed task completion, and whether they could cause serious consequences.
How can accessibility evaluation combine standards and user evidence?
Conformance checks assess a product against WCAG, while involving people with disabilities can reveal practical barriers in real use.
What is a key limitation of heuristic evaluation?
It reflects evaluators’ judgments, not direct evidence of user behavior, so it should complement rather than replace evaluation with users.
How can think-aloud testing affect timing data?
Thinking aloud can affect task performance, so interpret timing data with that effect in mind.
How can task completion be categorized?
Completion can be recorded as completed independently, completed with help, or not completed.
What makes a usability-test scenario neutral?
Use realistic, goal-oriented wording without naming the interface controls participants should use.
Why pilot usability-test instructions?
Pilot the instructions to find ambiguity before the study.