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Lecture: Human Errors (Preventing Errors (Perceptual Errors (Read-Scan)…
Lecture: Human Errors
Preventing Errors
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Cognitive Errors (Think)
- Taxing user's memory
- Lack of poor mnemonic aids
- Inconsistency
Motor Errors (Respond)
- Pressure for speed
- Requires high degree of eye-hand coordination
Prevention Guidelines
- Eliminate Modes or provide cues for modes
- Maximize recognition, minimize recall
- Allow reconsideration of action by user
- Minimize need for typing
Recovery Guidelines
- Provide appropriate type of response
- Ask user what should've been done then allow error action as legal one
- Provide undo function
- Provide cancel function from operations in progress
- Require confirmation for drastic actions
- Provide reasonableness checks on input data
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