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    • Multi-Store Model
      • Explains memory as a linear structure
      • Incoming stimuli enter sensory memory store (2secs)
        • If this info is attended to -> transferred to STM
          • STM
            • Limited capacity - 7+-2 items; limited duration - 30 secs; info lost due to displacemen; mainly encoded accoustically
            • Info stays in stm through maintenance rehearsal
            • Info is transfered to LTM through elaborative rehearsal
              • LTM
                • unlimited   capacity;  duration  of a lifetime; uses semantic  encoding;  info lost due to decay /retrieval  failure/ interference
        • Info lost if not attended to
      • Retrieval of info for use form LTM involves it first being retrieved into STM
      • Evidence to support MSM
        • Glanzer  and  Cunittz =  primary and   recency effect
        • HM= brain surgery of hippocmpus  to aid epilepsy supports LTM and STM diff. stores
        • KF= brain damage; visual not verbal tasks, STM more complex than MSM says (wmm)
        • Role of rehearsal- berkerian and badly - bbd wavelengths
          • Flashbulb memory - e.g. 9/11
    • STM
      • Duration = peterson and peterson -> 30secs Nairne et al -> 96 secs
      • Capacity= Miller -> (chunking) 7+-2 items
      • encoding= baddeley-> acoustic encoding in STM
    • LTM
      • Duration =   Bahrick ->  (yearbook  photos) durarion  lasts  a   lifetime
      • Encoding= Baddeley-> semantic encoding in LTM
      • Capacity= not measured - unlimited
    • Working Memory Model(1974)
      • Explaines memory as an active process
      • Central Executive - Most important component; major role in attention, planning and processing info from slave systems
        • Visuo-spatial sketchpad= limited capacity; temporary memory store for holding visual and spatial info
        • Phonological loop= stores a limited number of sounds for a brief period- made of 2 components:
          • Phonological store= (inner ear) allows acoustically encoded items to be stored for a brief period
          • Articulatory control system= (inner voice) allows subvocal repetition of the items stored in the PS
        • Episodic Buffer (baddeley 2000)= can integrate info from LTM - allows us to go beyondLTM to integrate it into a new scenario (lim. capacity)
      • Strength
        • doesn'tover-emphasise  the  importance  of rehearsal
        • PET scans show diff. areas of brain active while doing visual and verbal tasks - areas may correspond with WMM
        • Explains dual tasking= (E.G mental arithmetic tasks) - KF study
      • Weaknesss
        • Only STM - not a comprehensive model of memory(not covering all types of memory)
        • Doesn'texplain chnges in processing ability due to practice or time
        • Case studies - brain damaged patients - can't make before and after comparisons - brain damage is traumatic and may itself change behaviour
        • Central executive = not clear; vagueness allows it to explain most experimental findings; CE probably more complex than model explains; capacity never measured


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