Assignment 6.3

Usability- measures the experience a user has with a user interface.

The five different criteria of Usability

1. Learnability- the speed at which a user can complete basic tasks on an interface they have never used before.

2. Efficiency- how fast a user can finish tasks after learning how to use the interface.

3. Memorability- basically if a user can remember how to use an interface if they have been away from the interface for a certain amount of time.

4. Error Management- three ways to create a good interface

1) reduce the numbers of errors a user might make.

2) decrease the severity of each error.

3) make it easier for users to recover from errors.

5. Satisfaction- if a user had a good experience with the interface. If other user's enjoyed the interface.