memory Flashcards
what does the term memory refer too ?
process of….. information
storing
retaining
retrieving
why do cognitive psychologist use theoretical and computer memory in memory ?
to explain and make inferences about the structure and processes of memory
who and what year created the multi-memory store ?
Atkinson and Shiffrin
1968/71
what do Atkinson and Shiffrin suggest about our memory ?
it is divided into 3
independent and distinct stores
they are unitary
what are the 3 parts our memory is divided into ?
sensory register
short-term memory
long term memory
what does distinct mean ?
all have there own separate job
what does unitary mean ?
only one of them
what does coding-encoding mean ?
the way/form information enters memory
what does capacity mean ?
the amount of information we can hold in memory at any one time
what does duration mean ?
how long information can be held in the memory store
how does the sensory memory encode ?
-takes information in from all 5 senses
-preserves it long enough for them to recognised
- consists of several stores for each sensory modality
what is sensory modality ?
- specific to sense receiving info
-one aspect of a stimulus or what we perceive after a stimulus
what are the 2 sensory modalities ?
acoustic store= sounds, visuals
iconic store= pictures
what is the duration for sensory memory ?
-long enough to be recognised
- it is then either lost or passed to STM if attended to
what is the capacity of sensory memory ?
very large
how does STM encode ?
it is stored acoustically
what is the duration for STM ?
-18-30 seconds if not rehearsed
- can last considerably longer if rehearsed
what is the capacity for STM ?
- ## 5-9 items
how can you remember the capacity for STM ?
7 +/- 2
how does LTM encode ?
-semantically
- dependent of meaningfulness
- if you understand it your more likely to remember
what is the duration of LTM ?
- very long time
- potentially forever
what is one thing about memorise in LTM ?
- it is never truly forgotten
- we can simply no longer retrieve the memory at will
what is the capacity of LTM ?
unlimited
what will happen if one store of memory is damaged ?
the others should stay intact
what is Jacobs (1887) study for ?
- capacity of STM
- how much information can be held in STM
what accurate technique did Jacobs devise ?
serial digit span
what was Paterson & Petersons (1959) study for ?
- duration of STM
- show info is only held in STM for about 20 sec and then after disappears if no rehearsal
what are trigrams ?
nonsense syllables in sets of three
what is Baddeley’s (1966) for ?
-encoding in STM and LTM
- establish that STM is encoded acoustically (sound) and them LTM is encoded semantically (meanings)
what is an independent groups design ?
they only take part in one condition in the investigation
what is Bahrick (1974) for ?
-duration of VLTM
- show memories could last over several decades to support the assumption that the duration of a memory is a lifetime
what way did Bahrick aim to test VLTM ?
- ecologically valid and mundane realism way
what is declarative memories ?
specific events and facts
it is divided into 2 further sub groups
what is a procedural memory ?
aids the performance of a task without our conscious awareness of these previous experiences
responsible for knowing how to do things
who created the working model and what year ?
baddeley and hitch
1974
why did they created this model ?
as they believed that STM was not just one store but a number of different ones
what happens if you do 2 visual tasks at the same time ? and why ???
then you perform less well then if you do them separately
as there is conflict as the attention is divided
what happened if you do 2 things at once when 1 is visual and other involves sound ?
there is not interference between the 2
what does working memory model suggest about the processing system ?
that it is active not passive like multi store suggests
what is a active processing system ?
needs to engage in active cognitive process to learn
what are the 4 components of the working memory model ?
central executive
phonological loop
visuo-spatial sketchpad
episodic buffer
what is the central executive ? (6 things)
attentional control system
it allocated tasks between the 3 sub systems
it is modality free
had a limited capacity and duration (as model of STM)
can process information from any senses
it is where decision making happens
what are the 2 components reliant on the CE ?
phonological loop
visuo-spatial sketchpad
what is the phonological loop ?
deals w auditory and verbal information in speech base form
therefore modality specific- auditory
can hold a limited amount of info for a short time
what r the 2 subdivisions in the phonological loop ?
phonological store
articulatory process
what is the phonological store ?
speech based storage system
holds the words you hear for brief periods
decay rate- approx 2 seconds
also known as ‘inner ear’
what is the articulatory process ?
the sub-vocal repetition process
it silently repeats words to prevent decaying
has a limited capacity of 3-4 items
also known as the ‘inner voice’
what is the visuo-spatial sketchpad ?
deals with a limited number of objects (3-4)
they are spatial and visual
it is a temporary storage system