Working memory model

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WORKING MEMORY MODEL
Proposed by Baddeley and Hitch
` CENTRAL EXECUTIVE
Controls the sub systems.
It can multitask only to a certain capacity.
It switches attention and focus.
It is a flexible system that can process information in any sense modality.
PHONOLOGICAL LOOP
Acoustic component: sounds and recognition
Articulatory component: the production of sub-vocal speech.
It is also known as the `inner voice'.
Sometimes done unconsciously.
Works most effectively for speech based information.
VISUO SPATIAL SKETCHPAD
Visual component: distinguishes objects via shape and colour.
Spatial component: remembers routes and locations.
Memory traces within the store fade after 2 seconds.

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EPISODIC BUFFER
There were originally three components in the Working Memory model, however, they did not account for Long Term Memory
(LTM) and so the episodic buffer was introduced in the year 2000. It orders memories into chronological order and items are
moved to LTM via semantic meanings.
KEY STUDY
Pauelesu et al (1993)
Aim To investigate the phonological loop in working memory.
Method Participants were asked either memorise a series of letters or to rehearse the sounds of the letters in their
heads.…read more

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