Forgetting

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  • Created by: hlouiset
  • Created on: 17-02-16 18:59
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  • Forgetting
    • Short Term Memory
      • Trace Decay
        • Events between learning and recall have no effect on recall
          • The longer the time, the more the memory trace decays
        • Forgetting occurs as a result of automatic decay or fading of the memory trace
        • Memories leave a trace in the brain
        • Focuses on time and the duration of the STM
          • 15-30 seconds unless rehearsed
        • Brown (1958)
        • Peterson and Peterson (1959)
        • Little direct support
        • Cannot explain why people can remember events clearly from some time ago
        • Hard to test
          • Can't create situation in which there is a blank period of time between presentation of material and recall
      • Displacement
        • Focuses on capacity
          • 7+/-2
        • When the STM is 'full' information is pushed out/replaced by new information
        • Information that has been in STM longest is first to be displaced
        • Displaced information is forgotten
        • Atkinson & Shiffrin (1968)
        • Participants listen to a list of words being read out at a steady rate
          • They are asked to recall the words in any order (free recall)
          • Recency effect
            • Good recall of words at the end of the list
          • Primary effect
            • Good recall of words at the beginning of the list
        • Murdock (1962)
        • Difficult to tell whether forgetting occurs as a result of displacement or decay
    • Long Term Memory
      • Interference Theory
        • Suggests that memories can be interfered with
          • This could be by previous or new information we learn
        • Baddeley (1999)
        • Proactive Interference
          • Occurs when you cannot learn a new task because of an old task that had been learned
          • Old memories disrupt new mwmories
        • Retroactive Interference
          • Occurs when you forget a previously learned task due to the learning of a new one
          • New memories disrupt old memories
        • Chandler (1989)
    • The memory is still stored in the memory system but cannot be retrieved
    • The memory disappears and is no longer available

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