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17 Cards in this Set
- Front
- Back
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As much as __% of interactive system code supports the human-computer interface.
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88%
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UI Design Guidelines (1-3)
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1. Accommodate User Diversity
2. Accommodate User Experience Levels 3. Design Dialogs to Yield Closure |
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UI Design Guidelines (4-6)
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4. Employ the User-Centered Design Approach
5. Offer Informative Feedback 6. Permit Easy Reversal of Actions |
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UI Design Guidelines (7-9)
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7. Provide Direct Manipulation
8. Provide Effective User Guidance (Help System) 9. Reduce Short-Term Memory Load |
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UI Design Guidelines (10-12)
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10. Strive for Consistency and Simplicity
11. Support Internal Locus of Control 12. Use Carefully Worded Error Messages |
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User Experience Levels - intermittent user --
Maintains ________ knowledge over time, but loses ________ knowledge [UIDG 2] |
Maintains semantic knowledge over time, but
loses syntactic knowledge |
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Ways to accommodate different user experience levels (novice) [UIDG 2]
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-small # of meaningful functions
-highly informative feedback -online tutorials/demos |
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Ways to accommodate different user experience levels (intermittent) [UIDG 2]
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-simple, consistent commands
-prompting -online assistance -easy to remember functions |
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Ways to accommodate different user experience levels (frequent) [UIDG 2]
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-fast interaction
-powerful commands -concise feedback -ability to customize environment |
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Design Dialogs to Yield Closure [UIDG 3]
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*Sequences of actions should be organized into groups with a beginning, middle, and end.
*The informative feedback at the completion of a group of actions |
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User-Centered Design [UIDG 4]
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User-centered design is an approach to user interface (UI) design where the needs of the user are paramount and where the user is involved in the design process.
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UI design always involves the development of _______ interfaces.
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prototype
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Provide Direct Manipulation [UIDG 7]
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Enable users to interact directly with the objects on the screen
(e.g., Right-clicking a UI object) |
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Reduce Short-Term Memory Load [UIDG 9]
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human memory, not computer memory. See 'Hrair Limit'.
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Hrair Limit (aka Miller's Law)
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*a human being cannot process more than 7 ± 2 objects in working memory
*Reduce the amount of information the user needs to remember in accomplishing certain tasks. [other studies suggest ~4 chunks, depending on size of chunks and knowledge about them] |
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Support Internal Locus of Control [UIDG 11]
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Make users the initiators of actions rather than responders
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Use Carefully Worded Error Messages [UIDG 12]
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* Do not insult the user!
* Use a positive tone * Do not use such terms as illegal, invalid, error * Indicate what should be done instead * Be specific & address problem in user's terms |
