working memory model

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Cards (11)

  • Working memory model is an explanation of short term memory processes
  • There are three seperate components to WM which include the central executive, phonological loop, visuospatial sketch pad
  • The central executive is the main part of the WMM which controls the “slave” systems
    it is involved in problem solving and decision making, controlling the actions of the phonological loop and the visuo-spatial sketchpad
  • The visuospatial sketchpad processes images, dimensions and the positions of objects in the environment.
    it is a slave system of working memory that is controlled by the central executive which processes visual and spatial information such as light, colour, shape and tracking movement of objects
  • Episodic Buffer: a temporary storage system that is able to combine information from the loop, the sketchpad, long-term memory, or from perceptual input, into a coherent episode
  • CENTRAL EXECUTIVE Application: Research with patients who have memory deficiencies such as Alzheimer’s disease provides evidence that supports the idea that the central executive is responsible for the delegating of tasks
  • Central exec
    • Baddeley et al. (1986) found those with Alzheimer’s were less able than controls to perform dual visual and verbal tasks that required central executive decision making and delegation (1)
  • (general) Reliability There is supporting evidence from PET scans that show different areas of the brain as active during memory tasks (1) this increases the credibility of the model due to the scientific rigour of scanning techniques (1)
  • External validity There is evidence to support the existence of distinct components, for example, the case of KF who had unaffected visuospatial STM but impaired phonological STM.
  • application The model has been applied successfully to helping children with dyslexia/memory impairments so it has a credible use in society
  • PLL application, The phonological loop has been found to be necessary to the learning and development of language, Baddeley et al (1988).