working memory model (wmm) Flashcards
who created the working memory model?
Badderley and Hitch
what are parts of the working memory model?
central executive=>three slave systems:
-visuo-spatial sketchpad
-episodic buffer
-the phonological loop (later subdivided into phonological store + articulatory process by Badderley (1986)
what is the function of the central executive?
-directs attention to tasks=> decides what working memory pays attention to
-determines how resources (slave systems) are allocated=> makes decisions about which issues deserve attention and which should be ignored
what is the capacity of the central executive?
limited, info cant be held for long, not a store
how does the central executive encode?
through sensory stimuli
what is the function of the phonological loop?
to deal with auditory information, constantly rehearses and repeats info
what is the capacity of the phonological loop?
limited
what categories did Baddeley further divide the phonological loop into and when?
1986, phonological store + articulatory process
what is the function of the visuo-spatial sketchpad?
temporarily holds + mainpulates verbal and spatial info
how is the visuo-spatial sketchpad encoded?
from observing images or LTM
what did Logie 1995 say?
two conponents; visual cache- spatial + movement info , inner scribe- stores info about form and colour
what is dual task performance?
Baddeley + Hitch said that people can perform 2 tasks at the same time as long as they use different conponents of th WMM, however if they use the same part processing will slow down and cognitive overload will occur.
when was the episodic buffer added?
2000 by Baddeley
why did Baddeley add the episodic buffer to the WMM?
It combines information from the other sub-systems with long term memory and links to wider cognitive processes such as perception
- temporary store to integrate the acoustic, spatial and visual info processed by other subsystems
- maintains a sense of sequencing
- has a limited capacity of about four chunks (Baddeley 2012)
EQ; describe the phonological loop?
- deals with auditory into and preserves the order in which the info arrives.
- the phonological loop is further subdivided into the articulatory process which allows maintenance rehearsal which means sounds or words are kept in a loop to keep them in the phonological store while they are needed.
- the phonological store stores auditory information