Working memory model (bradley and hitch) Flashcards
Working memory (Bradley and Hitch)
Short term memory model
describes the process of memory and how visual and audio stimuli is processed and stored
Phonological loop
AUDITORY short term memory
stores what we hear
helps us understand sentences and is able to retain entire sentence
Words and audio are processed here
Phonological store
(inner ear) processes speech perception and stores spoken words we hear for 1-2 seconds
Articulatory control process
(inner voice) processes speech production and REHEARSES and stores verbal information from phonological store
Visuospatial Sketchpad
VISUAL short term memory
stores what we see
helps us picture things
Visuospatial sketchpad example
How many windows in your house?
Image is retrieved from LTM through episodic buffer onto visuospatial sketchpad
The central executive
puts together SOUNDS and VISION of short term memory
Coordinates phonological loop and visuospatial sketchpad and relates them to long term memory
controls our attention which enables us to perform mental manipulation of data
Central executive example
Central executive directs attention and gives priority to certain activities
(eg. choosing to focus on driving rather than answering a question)
3 main functions of central exec
1. Inhibition
an aspect of attention; screening our relevant stimuli
3 main functions of central exec
2. switching
changing our attention from one item to another
3 main functions of central exec
3. updating
modifying items brought from long term memory before recommitting them to memory through episodic buffer
Episodic buffer
Retrieves information from long term memory to associate with information in short term memory. Selects and encodes memory into LTM
Strengths of working memory model
supports that short term memory is made up of multiple components, explains more than multi store model
A case study of someone who injured their short term memory had impaired audio memory but his visual memory remained intact
Limitations of working memory model
Don’t have seperate components for visual information as spatial awareness isn’t completely a visual thing (blind people being able to navigate through senses)
little evidence for central executive
doesn’t include sensory or long term memory
Evidence for working memory model
If two tasks require use of the same component of working memory model they cannot be performed together
If two tasks require use of two different components they can be performed together