Information Processing Limitation


  1. Human information processing  have limitations. AMT requires support such as reference to written material (e.g. manuals).
  2. Attention and Perception - A proportion of ‘sensed’ data may be lost without being                              ‘perceived’.  
  3. Failing to  perceive  something which  someone  has said to you, when you are concentrating on something else, even though the words would have been received at the ear without any problem. 
  4. Information processing system has ability to perceive  something (such as a picture,                       sentence, concept, etc.) even though some of the data may be missing. 
  5. Danger - people can fill in the gaps with information from their own store of knowledge or experience, and this may lead to the wrong conclusion being drawn.
  6. Mental Model - Once we have formed a mental model of a situation, we often seek information which will confirm this model and, not consciously, reject information which suggests that this model is incorrect.
  7. Attention and perception shortcomings can clearly impinge on decision making.
  8. Perceiving something incorrectly may mean that an incorrect decision is made, resulting in an inappropriate action.
  9. Sensory and short-term memory have limited capacity, both in terms of capacity and                      duration.
  10.  Human memory is fallible, so that information:
                     • may not be stored;
                     • may be stored incorrectly;
                     • may be difficult to retrieve.
  1. Forgetting, which occurs when information is unavailable (not stored in the first place) or  inaccessible (cannot be retrieved).
  2. Information in short-term memory is particularly susceptible to interference, an trying to remember a part number whilst trying to recall a telephone number.
  3. Use of manual It is generally better to use manuals and temporary aides-memoires rather than to rely upon memory, even in circumstances where the information to be remembered or recalled is relatively simple.  
  4. Use of a personal note book to capture such information on a permanent basis can be dangerous, as the information in it may become out-of-date.

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