Case studies around The Working Memory Model R.A

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  • Case studies around the Working Memory Model
    • The central executive
      • D'esposito et al (1995)
    • The visuo-spatial sketchpad
      • Klauer & Zhao(2004) found more interference between two visual tasks than a visual and spatial tasks.
        • This was because one task was using the PL and the other the VSS.
      • Gathercole & Baddeley (1993)
    • Shallice & Warringtion (1974)
      • Investigated a patient named KF who had suffered brain damage in a motorcycle accident.
    • The episodic buffer
      • Prabhakaran et al (2000)
    • The phonological loop
      • Trojani & Grossi (1995)
        • Conducted a case study of a patient who had brain damage affecting the PL but not the VSS.
  • This suggests that the PFC is involved in CE.
    • Used fMRI and found out that the pre-frontal cortex is activated when verbal & spatial tasks are performed.
  • This suggests that the PL and VSS are separate systems.
  • Participants recalled shorter words in serial order.
    • Baddeley et al(1975) investigated the 'word length effect'.
    • Concluded that the capacity of the PL is set by duration of words and not the number of words.
  • This adds support to the separate VC & IS components.
    • Found that participants had problems simultaneousl tracking a moving point of light and performing a spatial task.
  • But greater posterior activation for non-combined information.
    • Used fMRI scans and found greater right-frontal brain activation for both verbal & spatial information.
    • This provides biological support that the EB allows temporary storage of integrated information.
  • Using a bunch of psychometric tests they concluded his STM problems were greater for auditory information than visual.
    • Investigated a patient named KF who had suffered brain damage in a motorcycle accident.
    • Suggests his damage was restricted to the PL.
      • His case suggests that the STM and LTM are separate stores.


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