In general, usability refers to how well users can learn and use a product to achieve their goals and how satisfied they are with that process. Usability means that people who use the product can do so quickly and easily to accomplish their tasks. Usability may also consider such factors as cost-effectiveness and usefulness.

It is important to realize that usability is not a single, one-dimensional property of a user interface. Usability is a combination of factors including:

• Ease of learning - How fast can a user who has never seen the user interface before learn it sufficiently well to accomplish basic tasks?
• Efficiency of use - Once an experienced user has learned to use the system, how fast can he or she accomplish tasks?
• Memorability - If a user has used the system before, can he or she remember enough to use it effectively the next time or does the user have to start over again learning everything?
• Error frequency and severity - How often do users make errors while using the system, how serious are these errors, and how do users recover from these errors?
• Subjective satisfaction - How much does the user like using the system?

Get More Web Site Visitors!

Our Web Site Designs Are:

• Search engine friendly
• Viewable with any browser
• Viewable on mobile devices such as cell phones and PDA's
• Accessible to blind and visually impaired users
• Accessible to users with other disabilities or impairments
• Compliant with US Section 508

This means the Web sites I design are seen by more people providing you with a broader audience and increased opportunities.

Learn more about the Federal Rehabilitation Act Section 508 Requirements