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The Concept Map you are trying to access has information related to:
High level Theories of User Interface Design, the Keystroke Model less emphasis on error handling, the Keystroke Model less emphasis on retention, Seven Stages of Action in using a system wich are Executing the Action, Operators Acomplish Goals, kieras into NGOMS, Performance Time for Error free Experts, the Keystroke Model predicts Performance Time, Seven Stages of Action in using a system wich are Percieving the system state, GOMS is short for Operators, GOMS proposed Card, Moran and Newell