I was recently asked by a teacher to explain an apparent contradiction in the text on working memory. On page 12 of the AS Complete Companion the text says that the central executive component of the Working Memory Model has a ‘very limited capacity’ but later, on the same page the text says the central executive has ‘no storage capacity’. Sounds like a contradiction! But on closer inspection there isn’t a contradiction – of course the the central executive has to have some capacity to direct attention but it has no extra storage capacity. I did double check this with Professor Alan Baddeley, who says ‘I assume that the executive has limited attentional capacity, but does not act as a store. Central storage in working memory is now assumed to depend on the episodic buffer’.

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