What is the maximum amount of characters expert users would prefer to type rather than change
their input device, such as switching from keyboard to mouse?
Six to eight
One to three
Fifteen to twenty
When there are competitive products in a marketplace that offer similar functionality, which of the
following is vital for product acceptance?
Fancy box art.
An encyclopedia of manuals to accompany the product.
By decomposing users actions into small measurable steps, the GOMS model and keystroke-level
model describe how users carry out a particular action. These models were able to...
Predict novice behavior by taking into account how many errors they make.
Predicts all types of user behavior, regardless of skill.
Predict expert behavior by assuming error-free performance.
Sara works for a large corporation and spends a great deal of her workday at a computer terminal.
Occasionally, she'll perform a series of actions and receive a confusing error message on the screen
which will impede her work and not allow her to proceed. At this point, Sara should:
Blame her company for not training her well enough to use the software.
Feel guilty for not remembering the correct complex series of actions.
Complain to the designer who did not provide a more convenient mechanism for
completing her task.
Since design is inherently creative and unpredictable, there are no methods available to guide a
By writing a statement of plausible impacts by an interactive system, it will only elevate fears or force
developers to make unreasonable compromises. It is best to record these impacts and only reveal
them at the end of the development process, at which point they can be fixed.
There is a significant diversity among humans with regard to physical abilities, backgrounds, cultures
and age. However, by simply designing an interface for the average, generic human, people of
various types will be able to conform to the design without toil.
One of the eight golden rules of interface design suggests that providing feedback for every user
action is too distracting for the user.
Designing interfaces to help meet the needs of disabled users will inevitably hurt normal user's
Of the five usability measures for practical evaluation, which one is usually accomplished by
interviews and surveys?
Speed of performance.
Time to learn.
Rate of errors by users.
Retention over time.
What is the central goal of acceptance testing?
Determine "user-friendliness" of the interface.
Detect flaws in the interface.
Verify adherence to the requirements set forth.
Suppose you are designing a touch-screen interface for a kiosk in a video rental store. You want to
provide the ability for the user to search for a movie and then provide information on where it is
located in the store. Which of the following would be the most effective way to improve search
Provide the ability for complex abbreviations, macros and shortcuts so that the search time
can be reduced for the user.
In order to reduce misspelling errors, after each letter the user types in, provide a dialog
box confirming that the user meant to touch that letter.
After each letter is typed in, update a browse-able list of movies whose names are
consistent with the input the user has typed in so far.
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