Working Memory Model

Working Memory Model

1. Central Executive

   • Drives the whole system (e.g. the boss of working memory) and allocates data to the subsystems (VSS & PL). It also deals with cognitive tasks such as mental arithmetic and problem solving. The central executive directs attention and gives priority to particular activities. The central executive is the most versatile and important component of the working memory system. However, despite its importance in the working-memory model, we know considerably less about this component than the two subsystems it controls. Baddeley suggests that the central executive acts more like a system which controls attentional processes rather than as a memory store.
     • Episodic Buffer
       • • LONG TERM MEMORY
   • Visuospatial Scratchpad
     • Stores and processes information in a visual or spatial form. The VSS is used for navigation.
   • Phonological Loop
     • Phonological Store
       • The phonological store (linked to speech perception) acts as an inner ear and holds information in speech-based form (i.e. spoken words) for 1-2 seconds. Spoken words enter the store directly. Written words must first be converted into an articulatory (spoken) code before they can enter the phonological store.
     • Articulatory Control Process
       • The articulatory control process (linked to speech production) acts like an inner voice rehearsing information from the phonological store. It circulates information round and round like a tape loop. This is how we remember a telephone number we have just heard. As long as we keep repeating it, we can retain the information in working memory. The articulatory control process also converts written material into an articulatory code and transfers it to the phonological store.