Mod 3 working memory model slides
- 1. Memory Specification: • The working memory model: central executive, phonological loop, visuo-spatial sketchpad and episodic buffer. Features of the model: coding and capacity.
- 2. Memory: working memory model (WMM) • Baddeley & Hitch (1974) • Thought the multi-store model was right but STM was more complex. • They did not think STM was: • A single temporary store. • A simple store for transferring information to LTM.
- 3. Memory: working memory model (WMM) • They argued that STM was an ‘active store’ that stored different types of information while they were being worked on. • STM can be thought of as consciousness: it holds information that is consciously thought about now. • To replace the STM store of the MSM they proposed a multi-component working memory.
- 5. Working memory model: WMM • WMM sees short-term memory as an active store holding several different types of information at the same time. • Central executive: the part of WMM that oversees and co-ordinates the other components of working memory.
- 6. Central executive: coding & capacity • The central executive has limited capacity. • The central executive can store any type of information. • It is modality free.
- 7. Phonological loop: coding & capacity • Phonological loop: the part of WMM that deals with auditory information. • The phonological loop stores information in an acoustic code. • It has limited capacity.
- 8. Visuo-spatial sketchpad: coding & capacity • Visuo-spatial sketchpad: the part of WMM that deals with visual information and spatial information. • It has limited capacity.
- 10. Working memory model: WMM • Baddeley & Hitch added one more component to the WMM in 2000. • They called this the episodic buffer. • This is the part of the WMM that acts as a temporary store of integrated information from the central executive, phonological loop, visuo-spatial sketchpad and LTM.
- 11. Episodic buffer: coding & capacity • The episodic buffer can store any type of information: acoustic, visual, spatial. • It has a limited capacity.
- 14. Working memory model: WMM • Complete the working memory model description worksheet.
- 15. Evaluation: strengths • Dual task performance studies. • Baddeley (1975)
- 16. Evaluation: strengths • Case studies of brain damaged people. • K.F. • Shallice & Warrington (1970)
- 17. Evaluation: limitations • The central executive. • Very little is known about it. • We don’t really know how much information it can store. • We don’t know exactly how it works.