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Question -

How is information processed thrdugh sensory, short-term and long-term memory systems?



Answer -

Atkinson and Shiffrin model of memory also known as stage model of memory.

  • This proposes the existence of three separate but sequentially linked memory systems, the sensory memory, the short-term memory and the long-term memory.
  • The sensory memory—contains a fleeting impression of a sensory stimulus (a sight or a sound). It is initial process that preserve brief impression of stimuli. It has a large capacity. It is of very short duration that is less than a second.
  • The short-term memory—a limited recollection of recently perceived stimuli (a telephone number or an order of drinks). It holds small amount of information for a brief periocfof time i.e. less than 30 seconds. It is primarily encoded acoustically.
  • The long-term memory—a more or less permanent store of memories for later retrieval (e.g. our telephone numbers). In this stage informations are encoded semantically and storage capacity is unlimited.
  • Each of these memory system is seen as differing in the way they process information, how much information they can hold and for how long they can hold that information.
  • The model can be expressed in the following diagram:

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