The working memory model is a development of the multi-store model proposed by Baddeley and Hitch (1974)
WMM is a model for short term memory and suggests STM is a dynamic processor of different types of information using sub units coordinated by a central decision making system
Central executive - controls attention and directs information to the slave systems
Phonological loop - deals with auditory and written information
Articulatory control process: allows maintenance rehearsal
Phonological store: stores acoustic items for a short period of time
Visuo-spatial sketchpad - stores visual or spatial information and has a limited capacity
Logie (1995) subdivided it into
the visual cache: stores visual information
Inner scribe: records arrangement of objects in the visual field
Episodic buffer (added by Baddeley in 2000)
He realised the model had no general storage facility
Temporary store for information
Sends information from the other subsystems to the LTM
There is research support from the ability to complete dual tasks.
Baddeley et al (1975) showed pps had more difficulty completing two visual tasks (tracking a light and describing the letter F) than doing both a visual and verbal task
there is criticism that the central executive is too vague. Cognitive psychologists suggest that this component is unsatisfactory and doesn’t fully explain anything
support for the central executive comes from Braver et al (1997) where they gave their pps tasks involving the central executive during a brain scan. They found greater activity in the prefrontal cortex.