What are attributes to measure product usability?

• A. Learnability, Efficiency, Memorability, Errors, Satisfaction, Utility
• B. Learnability, Efficiency, Memorability
• C. Memorability, Errors, Satisfaction
• D. Utility, Efficiency, Learnability

Answer: (A)

Measuring product usability means looking at how usable a product is from the user’s perspective across several important facets. Learnability shows how quickly a new user can start performing tasks. Efficiency looks at how fast and with how little effort those tasks can be completed, often measured by time or steps taken. Memorability gauges whether a returning user can reengage with the product after a break and still remember how to use it. Errors covers how often users make mistakes, how serious those mistakes are, and how easily they can recover. Satisfaction reflects the user’s subjective experience and overall happiness with using the product. Utility checks that the product provides the right functions to meet user goals, ensuring it is genuinely useful.

Together, these attributes form a comprehensive view of usability, which is why including all six is the best choice. Other options leave out one or more of these critical aspects, such as memorability, error handling, or utility, so they don’t capture the full picture of how usable the product is.