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Usability
an approach to product development that incorporates direct user feedback throughout the
development cycle in order to reduce costs and crea
Usability
Which ISO is this from Usability refers to the extent to which a product can be used by specified
users to achieve specified goals with effe
ISO 9241-11
Which ISO is this from "Human-centered design is characterised by: the active involvement of
users and a clear understanding of user and tas
ISO 13407
: How easy is it for users to accomplish basic tasks the first time they encounter the design?
Learnability
Once users have learned the design, how quickly can they perform tasks?
Efficiency
When users return to the design after a period of not using it, how easily can they reestablish
proficiency?
Memorability
How many errors do users make, how severe are these errors, and how easily can they recover from
the errors?
Errors
How pleasant is it to use the design?
Satisfaction
FIVE E's of Usability
effective, efficient, engaging, easy-to-learn, error-tolerant
1st benefit of usability
Increased productivity
2nd benefit of usability
Increased sales and revenue
3rd benefit of usability
Decreased training and support costs
4th benefit of usability
Reduced development time and costs
5th benefit of usability
Reduced maintenance costs
6th benefit of usability
Increased customer satisfaction
Usability professions
Human-computer interaction, Information Design, Psychology
The activities of a usability professional are all part of an approach to design called
user-centered design
learning about the people who will use a product and the context in which it will be used.
Research
observing (and learning from) users as they work with a product before, during and after the
design and development process.
Evaluation
whether it is called interface, interaction, information or experience design.
Design
Most common titles
User Experience Practitioner, Interface Designer, Usability Practitioner