Working memory model Flashcards
Who proposed the working memory model?
Baddeley & Hitch
What is the WMM?
A representation of the STM
»>suggest STM is a dynamic processor of different types of information
What is the role of the central executive?
‘supervisory role’
- monitors incoming data,
-divides our limited attention
-makes decisions and delegates tasks to 3 systems
What is the capacity & duration of the central executive?
-limited capacity
- does not store information so no duration
What is the role of the phonological loop?
-‘slave system’
-Temporary store that holds auditory/sound information
What is the roles of the two subdivisions of the phonological loop?
-Phonological store (inner ear)- stores words you hear
-Articulatory process (inner voice)- allows for maintenance rehearsal
what is the capacity and duration of the phonological loop?
-limited capacity
- 1.5-2 seconds duration
What is the role of the visuo-spatial sketchpad?
-‘slave system’
- temporary store that holds visual/spatial information
What is the roles of the two subdivisions of the visuo-spatial sketchpad?
-Visual cache -stores information about visual information e.g. shapes, colours
-inner scribe- records arrangements of objects in visual filed
What is the capacity of the Visuo-spatial sketchpad?
-limited capacity (3 or 4 objects)
What is the episodic buffer?
-‘slave system’
- temporary store that integrates information from other stores
-links WMM with the LTM
-added as model by Baddeley
What is the capacity of the episodic buffer?
limited capacity
How does Shallice and Warrington provide support of the WMM?
-case study of patient KF who had amnesia
-after brain injury KF had poor STM ability for auditory information but could process visual information normally» recall of letters & digits better when he read them
=phonological loop damaged but visuo-spatial sketchpad intact
How do dual-task performances support the existence of the Visuo-spatial sketchpad?
Baddeley et al participants carried out a visual & verbal task at same time =performance was similar when task was done separately
when both tasks were visual =performance decline» Competing for the same slave subsystem
What is a limitation of the nature of the central executive?
lack of clarity over its nature»_space; central executive needs to be more clearly specified than just simply attention
some psychologists believe CE may consist of separate subcomponents
