working memory model Flashcards
who proposed the idea of the WMM?
Alan Baddeley and Graham Hitch (1974)
Description of the WMM?
A representation of STM - dynamic processor of different types of information using sub units
Name all 4 sub units.
central executive, phonological loop, visuo-spatial sketchpad, Episodic buffer
Purpose of the central executive?
Co-ordinates the activities’ of the other three sub systems and allocates processing resources.
Purpose of the phonological loop?
processes auditory information both written and spoken material.
what is the phonological loop divided into.
phonological store and the articulatory process
Purpose of the visuo-spatial sketchpad?
processes visual and spatial information in a mental space often called our inner eye
Purpose of the episodic buffer?
brings together information from the other subsystems. bridges our working memory with the LTM
who investigated clinical evidence for the WMM
Tim Shallice and Elizabeth Warrington (1970)
clinical evidence: KF
Poor STM for auditory information but could process visual information
disadvantage of Kf
Since it happened in an accident other areas of the brain might be damaged.
Who investigated dual task performance?
Alan Baddeley (1975)
Findings of dual task performance
When asked to carry out verbal and visual task performance was better than when had to do two visual or verbal tasks
One strength of wmm
The model is based on evidence from laboratory experiments. Variables can be controlled to produce valid results
What areas of the Brian are used during dual task
Pre frontal cortex activated in both single and dual task conditions but more activation during dual task condition
