Usability Assessment
The importance of usability in web design is a vital key in the survival of a thriving website. Neilsen states that, "it is necessary for the survival of a website, If a website is difficult to use, people just leave, and frequently never come back to check and see if you have taken stock, and improved the site."
Factors to be considered are that design be easy to use, based on core psychological properties, and familiarity, i.e. design following metaphors from peoples real world experiences.
What we will focus on here in this presentation is 1) criteria for assessment, 2) who should assessor be, and 3) how to resolve disagreements on usability.
What do you believe are the appropriate criteria for assessing usability?
Learnability. A measure of how the user interface can be learned quickly and effectively.
Measured by learning time.
How easily can the user accomplish basic tasks the very first time they encounter the design?
Efficientcy ? rate or speed at which an interface enables a user to accurately and successfully complete a task.
Noted by faster response time and a consistent response.
How quickly can the user perform the tasks?
Memorability ? returning users come...
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