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Chapter 7: Design Rules - Coggle Diagram
Chapter 7: Design Rules
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Usability Principles
- Learnability: The ease with which new users can begin effective interaction and achieve maximal performance.
Predictability: Support for the user to determine the effect of future action based on past interaction history
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Familiarity: The extent to which a user's knowledge and experience in other real-world or computer-based domains can be applied when interacting with a new system
Generalisability: Support for the user to extend knowledge of specific interaction within and across applications to other similar situations.
- Flexibility: The multiplicity of ways the user and system exchange information
Dialogue initiative: User freedom from artificial constraints on the input dialog imposed by the system
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Task migratability: the ability to transfer control for execution of tasks between the system and the user
Substitutivity: the extent to which an application allows equivalent input and output values to be substituted for each other
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3. Robustness: The level of support provided to the user in determining achievement and assessment of goal-directed behaviour.
Observability: the extent to which the user can evaluate the internal state of the system from the representation on the user interface
Recoverability: The extent to which the user can reach the intended goal after recognising an error in the previous interaction
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Task conformance: the extent to which the system services support all the tasks the user would wish to perform and in the way the user would wish to perform
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