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Basic
Measures of Usability
The basic usability of a site can be measured relative to a users'
ability to perform a certain task for example, to find a paper
relevant to their interest.
The most basic measures are:
• The time a task requires to complete
• The error rate i.e. how often a user makes a navigational
mistake
• Users’ subjective satisfaction on completing the task. This
means a site must be quick to download, easy to navigate and full
of good-quality material.
• Users are essentially interested in the content of the site,
no amount of fancy graphics will convince them to return to a site
if it is no use to them. On the other hand users can easily miss
content they would have found valuable because it takes too long
to download, they can't find it or they can't read it.
Usability is about presenting information in the best way for your
students; therefore it is an interaction between design and
writing style.
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