Baddeley’s Working Memory Model
Baddeley et als working memory model replaced the idea of a unitary Short-term memory store (STM) and suggested a system involving multiple stores consisting of active processing and short-term storage of information. In this model STM is an active processor (working memory) which the “Central executive” (CE) “attends to and works on” either speech based information received from the articulatory-phonological loop or visually coded information received from the Visuospatial sketchpad. The four main components of the working memory model involve;
The Central executive
This the main component of baddeleys working memory model and coordinates the other two “slave systems” and ensures they don’t go astray. It is also involved in directing “attention” and resources towards particular tasks. Information is received from the senses or long-term memory and the capacity for the CE is very limited.
The Articulatory-Phonological loop
This processes speech based information and its order with the phonological store acting like an “inner ear” and speech perception. The articulatory control process (inner voice) is linked to speech production and is used to rehearse and store verbal information from the phonological store through a form of maintenance rehearsal. Again this has limited capacity.
The Visuospatial sketchpad
This component processes visual information through the senses (eyes) or long term memory on what things look like, patterns of recognition and spatial information consisting of the rela- tionship between things and perception of movement.