User Interface Design The Golden Rules Place the user in control Reduce the user’s memory load Make the interface consistence Place the User in Control Define interaction modes in a way that does not force a user into unnecessary or undesired actions Provide flexible interaction
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Is the system usable without continual help or instruction? within a system you are building is to conduct usability assessment or testing. Watch users interact with the system and answer the following questions
Do the rules of interaction help a knowledgeable user to work efficiently?
Do interaction mechanisms become more flexible as users become more knowledgeable?
Has the system been tuned to the physical and social environment in which it will be used.
Is the user aware of the state of the system? Does the user know where she is at all times?
Is the interface structured in a logical and consistent manner?
Are the interaction mechanisms, icons and procedures consistent across the interface?