mental model

mental model

1. computer

   • understanding
     • carryout tasks more effectively
     • knowledge
   • little/ no understanding
     • read and follow set of instructions with no clear understanding on how it is being processed by the compute
     • uncertainty
     • often unable to relocate file
     • match the mental model so the user does not get lost
       • audio
       • error messages
       • expect that command 'open' opens a document/ file
         • confidence and speed
   • inputs
     • sound
     • images
     • experiences

2. does not cover

   • RAM
   • menus, sub menus
   • file manement

3. covers generic features

   • software package used

4. envisage results of an action

   • user to predict the future actions
     • based from previous experiences
   • action of the computer should be anticipated by the user
     • perception
       • natural method of completing an action user
         • interface must
           • current, accuracy , state of the system to enable the user to carry out further actions
   • user is translated by the interface to the appropriate action
     • audio
     • visual