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ist331guide - 1 Name one aspect of humans that lead or...

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1. Name one aspect of humans that lead or allow people to make errors. They can adapt well, but adapting takes time and consumes mental and physical resources. Because these resources are limited humans tend to make errors. 2. Describe the power law of learning. Averaging data from multiple people and multiple series can create a curved equation that can be used to predict learning. 3. What causes airplanes to crash? Poor fits between pilot capabilities and the machine at particular times and for particular tasks. It is unfair to always blame the pilot when pilots make errors because it may well have been poor design that allowed him to make the error. 4. What can a designer do to help a user to notice a warning? Use multiple modes of output. An audio warning as an interruption will grab the attention of a user observing a visual display. 5. Describe the relationship between these memory processes: encoding, retention, and retrieval. Encoding creates and stores the memory. Retention is the period where the encoded memory can be kept or lost. Retrieval relies on successful retention of the memory so it can be recalled. Success at each step affects the ability to recall. 7. What is haptic perception? Perception of touch and its feedback WITH NO INPUT. * Obtained sensory input. Example is a game with a vibrating controller. 10. Why is consistency in interfaces important? The outcome of an interface’s use is important because it can offer way to save money, lives, etc. If the interface doesn’t provide consistent outcomes, it may lead to mistakes that lose money, lives, etc. Humans adapt and learn with repetition. If the interface changes, it is hard to the human to adapt and the learning curve will be inconsistent, causing more time and more room for error. 1. What is the availability heuristic?
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Rule of thumb that you search memory for instances similar to the one at hand 3. Why does Dawes say that interviews have poor predictive ability? Unable to integrate prediction with intuition. Since the interviewer can’t intuitive judge predictors, they rely on heuristics that are often untrue and lead to poor decisions. 4. How can you help users make better decisions? Use both knowledge in the world and knowledge in the head to simplify the structure of tasks as much as possible. 6. What can we say about the Columbia shuttle accident? It was a latent error. What we identify as cause of the accident depends on multiple factors such as who we are, who we are talking to, etc.
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