Working Memory Model

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Psychology AS Revision Module 1
Working memory model (Baddeley and Hitch 1974)
· Central executive
· Phonological loop
· Visuo-spatial scratch pad
· Episodic buffer (added in 2000)
Central executive:
· Controls attention and plays a role in organising and processing information
· Can process information from any of the slavery systems
· Limited storage capacity
· Can only process a small number of things at one time
· Controls/monitors the slavery systems
Phonological loop:
· Phonological store- Processes and stores acoustically coded information (inner ear)
· Articulatory control process- allows subvocal repetition of things stored in the
phonological store (inner voice)
· Can be limited if too many processes are tried at once (articulatory suppression)
Visuo-spatial scratch pad:
· Sets up and manipulates mental images
· Limited capacity
· Can be interfered with and manipulated
Episodic Buffer
· Added in 2000 (by Baddeley)
· Limited capacity
· Integrates pieces of information
· Manipulates information from the LTM so it can be processed by the other systems

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· More applicable than the MSM
· Affectively explains the way information is stored and processed for LTM
· Has evidence to prove the phonological loop- generated a lot of research into this
system (word length effect)
· Has evidence to prove the visuo-spatial scratch pad- generated a lot of research
into this system
· Influential- is still being researched and expanded
· We know very little about the central executive which is most important part
· Richardson (1984) argues that it is in…read more


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