1.2.12 - Define the term usability.

Question 1

What is usability?

Answer 1

Usability refers to how easy a system is to learn and use. It encompasses five key concepts: learnability, efficiency, memorability, errors, and satisfaction.

Question 2

What is learnability in the context of usability?

Answer 2

Learnability is how easy it is for users to accomplish basic tasks the first time they encounter a system.

Question 3

What is efficiency in the context of usability?

Answer 3

Efficiency is how quickly users can perform tasks once they have learned the system.

Question 4

What is memorability in the context of usability?

Answer 4

Memorability is how easily users can re-establish proficiency when they return to a system after a period of not using it.

Question 5

What is the concept of errors in usability?

Answer 5

Errors refer to the number, severity, and how easy it is to recover from errors a user makes while using a system.

Question 6

What is satisfaction in the context of usability?

Answer 6

Satisfaction is how comfortable and pleasant it is to use a system.

Question 7

What is ergonomics?

Answer 7

Ergonomics is the practice of designing and arranging things that people and other elements interact with as efficiently and safely as possible.

Question 8

What is accessibility?

Answer 8

Accessibility is the ability of people to access and benefit from a system, with special consideration for those with disabilities or special needs.