lecture8_STM_May31

lecture8_STM_May31 - General Overview Sensory memory Short...

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General Overview Sensory memory Short term memory Working memory Long term memory Memory for general knowledge
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Sensory Memory Short-term Memory Long-term Memory A sensory store for EACH Sense modalities
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Short-term Memory What is it? Quantity / Capacity – how much? Duration – how long? Coding (Contents) – what type?
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William James (1890) “The objects we feel in this directly intuited past differ from properly recollected objects. An object which is recollected, in the proper sense of the term, is one which has been absent from consciousness altogether, and now revives anew . . But an object of primary memory is not thus brought back; it never was lost; its date was never cut off in consciousness from that of the immediately present moment. In fact, it comes to us as belonging to the rearward portion of the present space of time, and not to the genuine past.” (James, 1890, p. 608-609)
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William James (1890) Primary Memory – information currently in consciousness Memory Proper – information previously absent from consciousness that is “revived” into consciousness
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Donald Broadbent (1958) Information flows through a series of systems, or filters Immediate or Primary memory : The combination of the S-system and the P-system. S-system : A preattentive memory store P-system : A limited capacity memory store which constitutes conscious awareness Secondary memory : Permanent storage
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Sensory Registers e.g., visual, auditory Environment Short-term store Control Processes : Rehearsal Coding Decision Retrieval Strategies Long-term store Response Output
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Donald Broadbent (1958) Three important distinctions made by Broadbent which have been retained by most models of memory: 1) primary (P-system) and secondary memory are separate memory systems 2) primary memory (P-system) is limited in capacity 3) active rehearsal is required to keep information in primary memory (P- system) otherwise the information
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STM versus LTM Capacity ?
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