Psychology Unit 1- Memory WORKING MEMORY MODEL

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  • Created by: Emily
  • Created on: 23-03-14 15:28

Psychology Unit 1- Memory WORKING MEMORY MODEL 1

  • Working Memory Model Baddeley and Hitch (1974)
  • Central executive- overall control, limited capacity, set task goals, monitoring & correcting errors, starting rehearsal, switching attention. Supported by two 'slave' systems.
  • Phonological loop- 'inner voice'- limited capacity, temp storage system- verbal info: Made of (passive) phonological store & articulatory loop- subvocal repetition
  • Visuo-spatial sketchpad- 'inner eye'- limited capacity, temp memory system- visual/spatial info: Made of (passive) visual store- 'Visual Cache' & (active) Inner scribe- rehearsal mechanism
  • Evidence for phonological loop: Baddeley, Thomson & Buchanan (1975)
  • Word lists- brief exposure- write down in serial order. 5 words each condition.
  • Condition 1- monosyllabic- harm, wit, twice. Condition 2- polysyllabic- organisation, university, association
  • Recalled more short words- Word Length Effect- capacity of loop determined by time to say words rather than no. of items- 1.5 secs
  • Lab- Repeated measures- controlled, maybe longer words less famililar?- harder to recall?, consent, debrief.
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Psychology Unit 1- Memory WORKING MEMORY MODEL 2

Evidence for the visuo-spatial sketchpad - Baddeley, Grant, Wight & Thomson (1973)

  • Tracking task- following light in a circle whilst doing a visual imagery task (imagining block capital .e.g F H T E, saying whether the angles were on bottom or top line (yes or no) ) 
  • Difficulty in doing both- both tasks competing for limited resources of visuo-spatial sketchpad.
  • Lab- controlled, artificial, repeated measures- eliminated individual differences, consent, debrief, frustration- reassurance.

Evidence for the central executve- Baddeley (1996/99)

  • Much less research- harder to research
  • Functions of CE- trying to think of random sequence of numbers- difficult because patterns emerge- competing for CE resources.
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Psychology Unit 1- Memory WORKING MEMORY MODEL 3

Strengths and Weaknesses of WMM

  • Extremely influential & most psychologists prefer WMM to MSM
  • Explains STM is vast detail
  • Can explain more than MSM e.g. brain damaged patients
  • WMM accounts for individual differences
  • Can be applied to more real life settings
  • Still do not offer full understanding of memory e.g. musical memory- listening to instrumental music doesn't affect our performance of other tasks
  • Exact role of central executive is unclear
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