Term
| What interaction styles exist? |
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Definition
- direct manipulation
- menus
- commands |
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Term
| What kind of direct manipulations exist? |
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Definition
- objects & actions visible
- rapid, reversible, incremental actions
- physical actions
- immediate feedback |
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Term
| What attributes do direct-manipulation interfaces have? |
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Definition
1. visibility of objects and actions of interest
2. Rapid, reversible, and immediate actions
3. Replace typed commands with physical actions
4. Immediate visibility of the results of actions |
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Term
| Benefits of direct-manipulation |
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Definition
- Less syntax to remember
- Errors are more preventible
- Faster learning and better retention
- Encourage exploration |
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Term
| When is direct-manipulation suboptimal |
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Definition
- Requires learning visual representations
- Bad visual representations are hard to understand of misleading
- Slower for experienced users
- Large visual representation beyond screen space requires scrolling and zooming
- Low accessibility for users with visual impairments
- More difficult to develop + requires more computing power |
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