Badderley and Hitch suggest that the memory system is divided into separate components
The central executive - Co-ordinates the operation of the other two slave systems, the central executive has a limited capacity
The phonological loop - deals with auditory information. it is called a loop because the information goes round in a loop. They divided it into the phonological store and the articulatory process
The visuo-spactual sketchpad - holds the visual and spatial information.
Evidence in favour or the working memory model.
Studies of individuals with brain damage support the working memory model
Strengths
Has been extremely influential and most cognitive psychologists prefer to use the working memory model in preference to the STM
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