Question In experimental studies, how should user's productivity be measured? Interactions per hour. Grams of caffeine needed by user per day. Correctly completed tasks. Question What is NOT a benefit of direct manipulation? Less syntax reduces error rates. Visually impaired users may have more difficulty. Encourages exploration. Faster learning and higher retention. Question Search interfaces in multimedia-document libraries are a greater challenge than in textual-document searches True False Question By emphasizing recognition over recall with the use of structured menus, consistent terminology, and high interface apparency, which of the following user groups will benefit most? Intermediate users Novice users Expert users Question For certain tasks, users can adapt to slow response times with no loss of productivity. Which type of tasks is this true for? Complex tasks. Repetitive tasks. Question 1 In Norman's model of human-computer interaction, what does he call the gulf of evaluation? The mismatch between the designer's user persona and the actual users. The mismatch between the user's intentions and the allowable actions The mismatch between the system's representation and the user's expectations. The mismatch between a predictive theory and the actual time of the task. Question Some older adults avoid helpful computer-based devices, such as bank terminals, because they are anxious about breaking the device or making an embarrassing mistake. Which of the following would be a good starting point to help alleviate this fear of a bank terminal? Use ethnographic observations to determine the way the subject interacts with the bank teller for withdrawing and depositing cash. Interview older adults who are nonusers of computers to help understand the source of their anxiety. Perform a controlled experiment comparing older adult's ability to use one bank's terminal over a different bank's terminal. Question Designers should be conscious of the type of input users can generate, and design the system so that users cannot make a serious error. True False Question 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: Complain to the designer who did not provide a more convenient mechanism for completing her task. Feel guilty for not remembering the correct complex series of actions. Blame her company for not training her well enough to use the software. Question Check the item below that is NOT an advanced filtering and seach interfaces technique. Filtering with complex Boolean queries Dynamic Queries Search by rule Automatic filtering 
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