Which factor is not the measure of usability goals?
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Accessibility
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Learnability
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Efficiency
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Satisfaction
Reveal answer
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A
Correct answer
Explanation
Standard usability goals are effectiveness, efficiency, and satisfaction (ISO 9241). Learnability is also a key usability attribute. Accessibility is related but distinct - it's about ensuring access for users with disabilities, not a direct measure of usability itself.
AI explanation
The classic usability goals (as in Nielsen's model) are learnability, efficiency, memorability, error rate, and satisfaction — all measuring how easily and pleasantly a user can operate a system. Accessibility is a related but distinct discipline concerned with whether people with disabilities can use the system at all, so it isn't counted among the core usability goal metrics.