Question 14 pts 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 Flag this Question Question 24 pts Novices may perform better with somewhat slower system response times. True False Flag this Question Question 34 pts After task analysis has been completed, the designer must choose an interaction style for the interface. Which of the following is the interaction style when a designer creates a visual representation of the world of actions? Command language Menu selection Form fill-in Natural language Direct manipulation Flag this Question Question 44 pts After a system's release, evaluation during active use is necessary to provide interface refinements to support even higher levels of service. Of the following evaluation methods, which one offers the most direct way to determine which errors occur most often in a system interface? Discussion and news groups. Online or telephone consultants. Interviews and focus-group discussions. Continuous user-performance data logging. Flag this Question Question 54 pts By splitting the search interface into two versions (simple search and advanced search)... You will have created a good example of a successful multi-layered interface. It will eliminate the need to use the OAI model when designing the interface. Novice users will be confused. Flag this Question Question 64 pts Which of the following is the major reason why there are slower task times for comprehension or proofreading on a computer display than paper? On computer displays, there can be frequent page turning, which is disruptive. Reading distance is more easily adjustable for paper than for fixed computer displays. All of the above. Unfamiliarity of displays and the anxiety of navigating the text can increase stress. Emitted light from the displays may be more difficult to read than reflected light from paper. Flag this Question Question 74 pts 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. Flag this Question Question 84 pts Of the five usability measures for practical evaluation, which one is usually accomplished by interviews and surveys? Retention over time. Speed of performance. Subjective satisfaction. Rate of errors by users. Time to learn. Flag this Question Question 94 pts Michael is the network administrator of an investment banking company. At off-peak hours, a user's action usually takes 8 seconds on Michael's system. However, at peak hours, the user's action usually takes 12 seconds. Michael thought about slowing down the speed of actions during off-peak hours to reduce variability. Is this a good idea? No Yes Flag this Question Question 104 pts One goal in requirements analysis is to ascertain the user's needs. Which of the following methods is the most effective way to serve the user's goals? Provide excessive functionality, so you will be sure that no matter who the user is, at least some of the functions you provide will support their goal. Due to the fact that frequent tasks are easy to determine, simply support those. Ignore emergency conditions and repair tasks, as they rarely happen. Design the look of the user interface well. A user will overlook inadequate functionality if the interface is aesthetically pleasing. Invest a significant amount of time into task analysis to determine what tasks and subtasks must be carried out. Flag this Question Question 114 pts Gregg works as a travel agent and helps people book flights for business trips and vacations. He uses a computer system that allows him to search for the best deal for his clients. However, the system he uses has a serious bug: if he types the date for the trip in an incorrect format, the system freezes and leaves him unable to continue his task. Which of the following would be the best way to help solve Gregg's problem? Update the interface with blinking text near the date input box to remind the user of the proper formatting of the date. Provide a new system manual to the user, with a section entitled, "Proper Date Formatting". Update the interface so that the user can't input improper dates, such as providing a calendar tool that allow the users to select a day and month from valid choices. Flag this Question Question 124 pts Taking a presentation and adding technology to it will only enhance the presentation. True False Flag this Question Question 134 pts Current techniques of information visualization, such as dynamically visualizing millions of items, have surpassed the limits of human visual abilities. True False Flag this Question Question 144 pts In Norman's model of human-computer interaction, what does he call the gulf of evaluation? The mismatch between a predictive theory and the actual time of the task. 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. Flag this Question Question 154 pts Subjectively satisfying the user is an important usability measure for determining the effectiveness of an interface. True False Flag this Question Question 164 pts For synchronous exchanges of messages among a stable set of participants, which is the preferred interface? 3D graphical avatars. Text-based chat. Flag this Question Question 174 pts System success is closely coupled to the quality of the help documentation. True False Flag this Question Question 184 pts Search interfaces in multimedia-document libraries are a greater challenge than in textual-document searches True False Flag this Question Question 194 pts Which of the following methods would best assist determining what the system response time should be? A survey asking users how long they would prefer to wait. Using a cognitive model of human performance. Ethnographic study monitoring the length of time users spends thinking. Flag this Question Question 204 pts In experimental studies, how should user's productivity be measured? Grams of caffeine needed by user per day. Correctly completed tasks. Interactions per hour. Flag this Question Question 214 pts 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 expert behavior by assuming error-free performance. Predicts all types of user behavior, regardless of skill. Predict novice behavior by taking into account how many errors they make. Flag this Question Question 224 pts 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 performance? 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. 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. Flag this Question Question 234 pts Universal usability deals with accommodating diverse users by... Least common denominator design so everyone can use the same simplified interface. "Dumbing down" interfaces. Innovative design that allow user controlled flexibility. Building separate software to sell to each class of users. Flag this Question Question 244 pts When there are competitive products in a marketplace that offer similar functionality, which of the following is vital for product acceptance? Celebrity endorsements. Well-engineered usability. An encyclopedia of manuals to accompany the product. Fancy box art. Flag this Question Question 254 pts 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. True False Flag this Question Question 264 pts Which of the following tends to have a higher complexity in online communities? The user interface that the participant communicates with. The way the conversations are managed and moderated. Flag this Question Question 274 pts By presenting users with complex procedures, cluttered displays, inadequate and inconsistent functionality, and incomplete feedback, which of the following can occur among the users? All of the above. Frequent minor and occasional serious errors. Debilitating stress and anxiety that can lead to poor performance. Job dissatisfaction. Flag this Question Question 284 pts Which one of the following is NOT one of the four E's of management strategies? Enhancement Expertise Education Enforcement Exemption Flag this Question Question 294 pts Simulating the day in the life of the user should be a part of the expert-review process. Which of the following methods fulfills this goal? Formal usability inspection. Heuristic evaluation. Consistency inspection. Cognitive walkthrough. Flag this Question Question 304 pts 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 Fifteen to twenty One to three Flag this Question Question 314 pts What is the difference between user-interface designers and traditional ethnographers? User-interface designers often need to immerse themselves in cultures for weeks or months, whereas traditional ethnographers typically limit the process to a shorter period of time. User-interface designers do not have to understand their subjects, where traditional ethnographers do. User-interface designers focus on interfaces for the purpose of changing and improving them, whereas traditional ethnographers are just interested in understanding their subjects. Flag this Question Question 324 pts Computers are alienating and anti-human. True False Flag this Question Question 334 pts Is the following model of user think time realistic: User initiates an action, waits for the computer to responds, watches while the results appear, thinks for a while, and then initiates an action. Yes, this model is an accurate representation. No, this model is unrealistic. Flag this Question Question 344 pts Can small-group collaborative-learning experiences among students be positive? No, the students will socialize or be uncooperative. Yes, pairs often learn better than individuals. Flag this Question Question 354 pts In the absence of empirical data, human-interface guidelines are usually based on: User preferences from surveys Best-guess judgments from experienced professionals Statistical analyses of user logs 
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