Common Mistakes
In teaching people to use the walkthrough method, Lewis & Rieman have found that there are two common misunderstandings :
- The evaluator doesn't know how to perform the task themself, so they stumble through the interface trying to discover the correct sequence of actions -- and then they evaluate the stumbling process. (The user should identify and perform the optimal action sequence.)
- The walkthrough does not test real users on the system. The walkthrough will often identify many more problems than you would find with a single, unique user in a single test session.
Read more about this topic: Cognitive Walkthrough
Famous quotes containing the words common and/or mistakes:
“The wildest dreams of wild men, even, are not the less true, though they may not recommend themselves to the sense which is most common among Englishmen and Americans to-day. It is not every truth that recommends itself to the common sense. Nature has a place for the wild clematis as well as for the cabbage. Some expressions of truth are reminiscent,—others merely sensible, as the phrase is,—others prophetic.”
—Henry David Thoreau (1817–1862)
“Logic must look after itself.... In a certain sense, we cannot make mistakes in logic.”
—Ludwig Wittgenstein (1889–1951)