Working memory model

• • Baddeley and Hitch 1974 created a model for STM to account for its different stores
  • it suggests that STM is a dynamic process
• central executive

  • the supervisory component of the working memory
  • all decisions made here
  • very limited storage capacity
  • attentional process that monitors incoming data
• phonological loop

  • coding is acoustic
  • deals with auditory info
  • preserves order in which info arrives
  • phonological store: inner ear, stores the words you hear, rapid decay
  • articulatory process: inner voice, allows maintenance rehearsal, 2 second capacity
• visuo spatial sketchpad

  • stores visual and spatial info
  • capacity: 3-4 objects
  • Logie:
  • visual cache: stores visual data
  • inner scribe: records arrangement of objects in the visual field
• episodic buffer

  • Baddeley added because he realised WMM needed a general store
  • integrates visual, spatial and verbal info processed by other stores
  • maintains a sense of time sequencing
  • has a limited capacity of 4 chunks
• working memory model