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Usability 101

Usability 101
Quote: “Usability has five quality components:

  • Learnability: How easy is it for users to accomplish basic tasks the first time they encounter the design?
  • Efficiency: Once users have learned the design, how quickly can they perform tasks?
  • Memorability: When users return to the design after a period of not using it, how easily can they reestablish proficiency?
  • Errors: How many errors do users make, how severe are these errors, and how easily can they recover from the errors?
  • Satisfaction: How pleasant is it to use the design?

One Comment

  1. Good post. I would also add findability. How easy/difficult is it for users to find the information they are looking for?

    – mh

    Monday, September 22, 2003 at 3:03 pm | Permalink