what is the coding for short term memory?
ACOUSTIC
what is the capacity for short term memory?
7+-2 items
what is the duration of the short term memory ?
18 - 30 seconds
What is the key process of Short term memory?
maintenance rehearsal
Prolonged rehearsal
Who researched capacity of STM?
Miller (1956)
Who researched coding in STM?
Baddely (1966)
Who researched duration of STM?
Peterson & Peterson
What is the central executive purpose and capacity and coding?
Monitors incoming data . Makes decisions and allocates slave systems to the data.
Very limited processing capacity
Modality free - multiple different types of coding
Visuospatial loop purpose capacity coding?
Stores visual data and records arrangement of objects in visual field
Limited capacity about 3-4 objects
Visual coding
Episodic buffer purpose capacity coding?
Temporary store for information which is received by central executive.maintain sense of time.
Link LTM to wider cognitive processes such as perception
Limited capacity about 4-5 objects
Modality free - different types of coding
Phonological loop is into two process ?
Phonological store
Articulatory control system
Phonological loop purpose capacity and coding?
Preserves the order in which information arrives .
Stores words we hear divided into two
Limited capacity- 2 seconds
Auditory - coding
AO3 - KF case study
He couldn’t remember when digits were read out to him but could when he read them his self.
A strength as shows there are different stores for sight and sound.
Supports the working memory model
Generalise with caution as a case study
AO3 - Baddeley Study
Asked participants to track a light and describe how to write an F and his participants were able to as they use different stores of the brain where memory is stored.
Increases validity
AO3 - Neuroimaging
Conducted a brain scan using activity of central executive and more increase increases activity
AO3 : central executive lacks clarity and detail
Central executive lacks clarity and detail.baddley described as a general attentional system as it allocated resources but didn’t clearly explain the role and if it has separate components. This means it is difficult to test scientificly reducing the validity. Some psychologists also suggest that central executive may actually be made up of several components rather than one which means that working memory model is overly simplistic which weakens the explanatory power of the model as doesn’t explain how it fully works
