The central executive is a crucial part of the working memory model. Borrowing heavily from Donald Norman and Tim Shallice's supervisory attentional system (SAS, 1980) and evidence from patients with frontal lobe damage Baddeley adopted the SAS as a model for the central executive. However, the question of whether the central executive can store information and how it is linked to long term memory posed problems that were addressed in the episodic buffer...
