16 Questions
What is the primary focus of usability?
Efficiency
What does efficiency in usability refer to?
Time taken to use the system once learned
What is the purpose of UI Hall of Shame/Fame according to the text?
To provide information for user decision-making
What is the capacity of working memory according to the text?
7 ± 2 'chunks'
How does maintenance rehearsal affect working memory?
It prevents decay but costs attention
What is the definition of 'chunking' as per the text?
A unit of memory or perception
What is the key factor that allows chess masters to remember board configurations?
Their past experience of playing and studying games
What does Fitt’s Law specify in relation to hand movement and target size?
As the target size goes up, movement time goes down
What is the implication of Fitt’s Law with regards to targets at the screen edge?
Targets at the screen edge are easy to hit
How is the index of difficulty calculated in Fitt’s Law?
Logarithmically in relation to target size and distance
What is the key message when transforming Fitt’s Law into a designer’s language?
Design your user interface element to be large and close to where the user starts the interaction
What makes steering tasks much harder than pointing according to the text?
The linear nature of index of difficulty
What is suggested by transforming the law into designer’s language regarding tunnel user interface elements?
Design them to be wider and shorter
What does a high index of difficulty indicate in Fitt’s Law?
A small target size and a long distance from the starting point
What is the primary reason for beginners' limited ability to remember chess board configurations according to the text?
Their lack of experience in playing chess
What is implied by Fitt’s Law with respect to the effect of target distance on movement time?
As the target distance increases, movement time increases
Test your understanding of usability in information visualization with this recap quiz. Explore the dimensions of usability including learnability, efficiency, and safety, and their relevance to the user-system interface.
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