Working Memory Model


Phonological loop

Stores a limited number of speech-based sounds for brief periods.

Two components:

Phonological Store -

  • "inner ear", holds speech based information for 1-2 seconds.
  • spoken words enter directly, written converted to articulatory code

Articulatory Control Process -

  • Acts as "inner voice", allows sub-vocal repetition of information held in the phonological store (which can be suppressed)
  • Also converts written material to articulatory code
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Central Executive

  • Drives the whole system and is involved in decision making and problem solving
  • Controls attention and plans and synthesizes information from all subsidary systems and LTM
  • Can ensure only most important stimuli are processed
  • Flexible and can process information from any modality
  • Has limited storage capacity
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Visuo-spatial scratch pad

  • Stores and processes information in visual and spatial form (what things look like and place in visual field)
  • Has a limited capacity
  • "Inner eye"
  • Displays and manipulates memories from LTM
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Episodic Buffer

  • Intergrates and manipulates material
  • Limited capacity
  • Capable of inegrating information from different sorces into chunks
  • Inergrates material from LTM to meet requirements of working memory
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