decay theory

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  • Created by: sammie
  • Created on: 01-05-13 13:13
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    • Memories have a physcial basis known as a trace. This trace will decay in time if not passed to the long term memory.
    • PETERSON &PETERSON found that memories were held in the short term memory for around 18 seconds and decay via trace decay
      • participants recalled fewe utens the longer the delay before recall
    • WAUGH &NORMAN given a number and had to state the number that follows it. time gap before recall meant they forgot
      • better recall when said faster
      • better recal when probe numbe closer to end
    • JENKINS & DALLENBACH participant learned nonsence syllables, some slept some carried on, those who remained awake forgot more than those who slept
      • indicates it is interference that effects recall ability rather than decay
    • difficult to test objectively, possible that factors such as interference or lack of cues may effect recall ability
    • lab setting tests effect ecological validity.


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