the working memory model

• created by

  Baddeley & Hitch

  -replace the STM store of MSM due to criticisms
• issues with STM


  -replace STM

  -STM must be more complex than a single unitary store that only exists to pass to LTM

  -STM must be an active processor, holding multiple different types of info simultaneously
• label

  A) central executive

  B) episodic buffer

  C) phonological loop

  D) primary acoustic store

  E) articulatory control process

  F) visuo-spatial sketchpad

  G) inner scribe

  H) visual cache

  I) long term memory

  
• central executive 


  -'head' of model

  -controls & directs attention

  -receives sense info & filters it before passing to sub-systems

  -capacity of 4 items

  -works on one type of into at a time

  -can switch attention between different inputs
• phonological loop


  -processes auditory (sound) coded info

  -capacity of what can be said in 2 seconds (word length effect)
• primary acoustic store/ phonological store

  -inner ear

  -perception of sound

  -holding words recently heard
• articulatory process/ loop

  -inner voice

  -verbal rehearsal system

  -used to prevent decay of verbal material

  -words silently repeated

  -duration of 2 seconds
• visuo-spatial sketchpad 


  -processes visual & spatially coded info

  -inner eye

  -mental rough paper

  -used when planning visual / spatial tasks

  -capacity of 3-4 objects
• visual cache

  -passive store

  -stores form & colour
• inner scribe

  -active store

  -holding the relationships between objects in 3D space
• episodic buffer

  -added in 2000 by Baddeley

  -third sub-system

  -model needed general store to hold, store & integrate info from all other parts

  -temporary store

  -capacity of about 4 chunks of info
• dual task performance


  -2 tasks use seperate systems

  -can do easily as they're not from same system