SPRING working memory and executive attention Flashcards
what is working memory
online processing of a task over short periods of time
actively holds and processes info
quick access - special access to conscious and way of remembering
assoc with STM - process info into visospatial and phonological loop
baddeley and hitch 1974
types of STM tasks
serial recall digit and letter span corsi block task brookes matrix task dots task
what STM tasks can be varied to visuospatial info
corsi blocks
brookes matric
dots
describe baddeley 2000 working memory model
central exec control and catrogoris einfo into visuospatial or phonological loop
episodic buffer allows communication between the two
ltm strorage also
define the central executive
drives the whole system (e.g. the boss of working memory) and allocates data to the subsystems (VSS & PL). It also deals with cognitive tasks such as mental arithmetic and problem solving.
define the visuospatial sketch
Stores and processes information in a visual or spatial form
define the phonological loop
part of working memory that deals with spoken and written material
onsists of two parts
Phonological Store (inner ear) – Linked to speech perception
Articulatory control process (inner voice) – Linked to speech production
visual verbal info first go through GP translation before store in phon
how can you investigate the evidence for two seperate wm stored
look at dual tasks studies and dissociations in ability
Farmer berman and fletcher 1986 investigating wm store dissocciations
double dissociation between disruption to performance on verbal (“A is not followed by B – BA”) and spatial (which hand does a manikin hold a probe item) reasoning tasksd
patient KF investigating wm store disocciations
KF suffered brain damage from a motorcycle accident that damaged his short-term memory. KF’s impairment was mainly for verbal information - his memory for visual information was largely unaffected.
patient PV investigating wm store disocciations
left hemisphere stroke resulted in normal LTM but impaired verbal STM- unable to decide if a long sentence were true or false (ie the world divides the equator into two hemispheres; the northern and southern) because they couldn’t remember what was at the start of the sentence. also unable to learn pairs of novel words with words they already knew (van-jalka). These experiments helped reach the conclusion that PV is unable to hold items in a short term phonological store.
patient ELD investigating wm store disociations
aneurysm in the right hemisphere
couldn’t remember new routes or faces (could recognise new voices)
ELD has difficulty in remembering short sequences of visuospatial information yet phonological loop function normally
deficit can be interpreted as impairment in the visuospatial sketchpad
ELD shows poor imagery for material exposed to since her illness but not acquired before her illness
describe the slave stores in respect to maintenance and rehearsal
both loops have maintenance and rehearsal of info to keep memory within the store - transfer to ltm
describe engle 2001 wm alternative
working memory capacity = STM and attention
WM
capacity not how many items can be stored but differences in the ability to control attention & maintain information in an active, quickly retrievable state
using attention to maintain or suppress information.
more items maintained as active is a result of ability to control attention not a larger memory store - greater WM capacity = greater ability to use attention to avoid distraction
problem with simple span scores for wm (engle 2001)
digit span score does not correlate very highly with other cognitive capabilities - ability to serial recall verbal strings is not that important?
“Loading” the working memory subsystems doesn’t catastrophically impair cognitive performance
KF and PV are actually quite cognitively competent in “real world” tasks