Monday 24 February 2014

Memory

Atkinsin and Shriffin 1968
Proposed a memory system that is divided into 3 stores. Information passes through each store in fixed sequences and capacity and duration are limited on each stage. The transfer between each stage may require recoding. Information in the short term memory (STM) is encoded. It will remain in the STM for roughly 9 seconds. After rehearsal of the information, it is passed through to the long term memory and can remain there forever. However information can be lost from the long term memory due to decay and interference.
SENSORY MEMORY (IMMEDIATE MEMORY)
CAPACITY - 9 ITEMS
DURATION - 200/400 MILLISECONDS
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SHORT TERM MEMORY
ACOUSTIC
CAPACITY - 7+/- 2 ITEMS
DURATION - 20/30 SECONDS
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LONG TERM MEMORY
SEMANTIC
CAPACITY UNLIMITED
DURATION UNLITIMED LIFE TIME!!
 
At each stage information is recoded and either passed through   successfully of lost through decay, illness, interference.


 



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