working memory model - baddeley and hitch Flashcards
what is working memory
a multi component system (auditory and visual) and as a result can both retain and process information
- what happens in central executive
info enters central executive which delegates info to other stores for processing. either visuospatial sketchpad and phonological loop
- phonological loop
processes auditory information and splits them into phonological store - stores words you hear
and articulatory process - keeps words in a 2 second loop to keep them in working memory
- visuospatial sketchpad
deals with visual info. logie split this into visual cache - stores visual data
inner scribe - records the arrangement of objects into our visual field
4.episodic buffer
added by baddeley in 2000
acts as a backup store which communicates with both long term memory and components of working memory.
it combines all info from other stores into one memory to be stored in ltm
what is the rule of dual task performance
- if two tasks make use of the same component (of working memory) they cannot be performed successfully together
- if two tasks make use of different components if should be possible to perform them as well as together as separately
(scout) se for central executive
p: baddeley and hitch conducted an experiment in which participants were asked to perform two tasks at the same time (dual task performance)
e: pts had to do a digit span task which required them to repeat a list of numbers and a verbal reasoning task requiring them to answer true or false to various questions, they didnt make any more errors in verbal reasoning tasks as number of digits increased. verbal reasnoning task made use of central executive and digit span made use of phonological loop
t: provides evidence, high val
se for wmm kf case study KF
p: kf case study supports wmm
e: kf suffered brain damage from a motorcycle accident that damaged his short term memory. Kf’s impairment was mainly for verbal info - his memory for visual info was largely unaffected.
t: shows there are seperate stm components for visual info (vss) and verbal info (phonological sketchpad)
:can be pete with lieberman
ce: vss
p: wmm only involves stm - not comprehensive model of memory -
e: does not include sensory memory or details ab different stores or workings of ltm. it also doesnt include details ab how info is lost from working memory unlike msm
t: not useful into explaining how we forget info and is limited
ot
mmm
ce: lieberman
p: lieberman criticises the wmm
e: he points out blind people have excellent spatial awareness. although they have never had visual info. lieberman argues the vss should be seperated into two different components one for visual one for spatiak
t: not accurate
