Psychology- WMM

  • Created by: Daisymac
  • Created on: 29-01-19 18:44
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  • Working memory model
    • What?
      • A representation of short term memory and suggests that STM is a dynamic processor of different types of information using sub-units coordinated by a central decision making system
    • Central executive
      • The component of the WMM that coordinates the activities of the three subsystems in memory. It also allocates processing resources to those activities
    • Phonological loop
      • The component of the WMM that processes information in terms of sound.
      • This includes both written and spoken material
      • Its divided into the phonological store, which stores words you hear, and the articulatory process, which allows maintenance rehearsal
    • Visuo-spatial sketchpad
      • The component of the WMM that processes visual and spatial information in a mental space often called our inner eye
      • The visual cache which stores visual data
      • The inner scribe which records the arrangement of objects in the visual field
    • Episodic buffer
      • The component of the WMM that brings together material from the other subsystems into a single memory rather than separate strands
      • It also provides a bridge between working memory and long term memory.
    • Evaluation
      • +ve- the case study of KF
        • Study carried out by Shallice and Warrington 1970, who studied patient KF who suffered from brain damage
          • KFs short term memory for digits was very poor when they were read aloud to him, but his recall was better when he was able to read them to himself
        • This shows there could be separate short term memory for visual information and one for acoustic
        • Good because research shows that there should be more than one store for short term memory , and so increases the validity of the wmm
      • -Ve relatively little is known about the central executive
        • It is suggested that it has limited capacity, but this capacity has not been measured with precision
        • Also believed that it is just one component which may be overly simplistic
        • This is because researchers found that after the removal of a brain tumour, their patient could still perform well on tasks that involved reasoning, but not on tasks on decision making
          • This suggests there is more than one component
      • studies of the word length effect support the phonological loop
        • Baddeley et al 1975 demonstrated that people find it more difficult to remember a long list of words rather than short words --> Word length effect
        • This is because there is a finite space for rehearsal in the articulatory process  and the word length effect disappears if a person is given an articulatory suppression task
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