usability
how easy it is to use a product/system
usability objectives
usefulness, effectiveness, learnability, likeability
enhanced usability
development that extends usability, improves product acceptance + user experience
- e.g. speech recognition, TTS
good user product interfaces
low user error, user satisfaction, simple/intuitive use; influences reputation + product acceptance/failure
population stereotypes
concern how products operate in different regions; e.g. left vs. right hand drive, on/off switches