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Usability and Accessibility - Coggle Diagram
Usability and Accessibility
Accessibility
Accessibility means enabling people with diverse abilities and methods of access to effectively use your interface.
The aim of accessibility is to remove barriers for perceiving, understanding and navigating your interface and ensure that nobody is excluded.
Usability
Usability relates instead to the how websites or applications are easy to use, how much they are effective and efficient and how much they satisfy specific users – achieving specific goals – in specific environments.
5 Quality Components
Learnability
Can a first-time user easily understand basic navigation?
Memorability
How quickly can a user perform tasks?
Errors
If users do not use the design for a while, will they be able to re-establish proficiency?
Satisfaction
What are the errors that users make, how severe are they, and how can users rebound easily?
Levels of Difficulties
Touch
See
Hear
Speak
Areas of Accessible Design
Visual
If, for example, your web design were to feature in a trade-show booth, you’d need to consider how someone in a wheelchair could access that booth, and turn around and exit it on completing the task.
Motor Mobility
Auditory disabilities affect the hearing and come in varying degrees of severity, up to and including total deafness.
Auditory
Long-sightedness, blindness, color blindness, are all forms of visual disability you need to cater for in your design.
Seizures
Some individuals can be affected by light, motion, flickering, etc. on screen, thus triggering seizures. The most common issue in this category is photosensitive epilepsy.
Learning
It’s also important to remember that not all disabilities are physical. Learning and cognitive disabilities can also influence accessibility.