can be broken down into the following goals:
- Effectiveness – How accurately and completely users can
accomplish tasks - Efficiency – How quickly users can complete tasks
- Safety – Avoid dangerous situations caused by interaction with
technology - Utility – Provide enough functionality for users to accomplish
necessary tasks - Learnability – How easy is it to learn to use technology
- Memorability – How easy is it to remember how to use a
technology once you have learned how to use it