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possible exam areas (HCI interaction models (visibility of system status,…

- - - - HTA
        
        decomposition of behavior and plans for a task
        
        no info about task environment
  - - - advantages
        
        practical & efficient
        
        widely known and established
        
        find usability problems
      - disadvantages
        
        user fatigue not addressed
        
        mental workload not addressed
        
        only applied to skilled users
      - focus on cognitive elements of behaviour
- - - - are wrong choices available
      - difficulties
      - timeout issues
    - - will users quit
      - system output
      - will the user know what they have done
- - - - incoming data interferes with rehearsal process