Cognitive Psychology - Short Term Memory

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Short term memory has 3 main aspects:

  • Limited capacity - only about 7 items can be stored at a time.
  • Limited duration - storage is very fragile and information can be lost with distraction or passage of time.
  • Encoding - Primarily acoustic.

Miller's magic number 7 (plus or minus two) provides evidence for the capacity of short term memory. Most adults can store between 5-9 items in STM. Miller said that the STM only…

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