working memory model

Cards (20)

  • who developed the working memory model
    Baddeley and Hitch 1974
  • what does the working memory model show
    the WMM is an explanation of how one aspect of memory (STM) is organised and how it functions
  • components of the working memory model
    the model consist of 4 main components
  • what is the role of the central executive
    supervisory role
    monitors incoming data, focuses and divides our limited attention
    allocates subsystems to tasks
  • capacity of the central executive
    very limited processing capacity
  • what are the divisions of the phonological loop
    the phonological store
    articulatory process
  • role of the phonological loop
    a subsystem that deals with auditory information and preserves the order in which the information arrives
  • what is the phonological store
    a store of the words you hear
  • what is the role of the articulatory process
    it allows maintenance rehearsal
  • capacity of the articulatory process
    2 seconds worth of what you can say
  • what is the role of the visuo-spatial sketchpad
    second subsystem
    stores visual and/or spatial information when required
  • capacity of the visuo-spatial sketchpad
    Baddeley (2003) says the limited capacity is about 3 or 4 objects
  • what did Logie (1995) divide the VSS into
    the visual cache
    the inner scribe
  • what is the visual cache
    stores visual data
  • what is the inner scribe
    record the arrangement of objects in the visual field
  • what is the episodic buffer
    the third subsystem
    added by Baddeley in 2000
    a temporary store for information
  • role of the episodic buffer
    integrates the visual,spatial and verbal information press by other stores
    maintains a sense of time sequencing- recording events that are happening
    storage component of the central executive
  • capacity of the episodic buffer
    limited capacity of about four chunks (Baddeley 2012)
  • strengths of the WMM
    evidence from research- Shallice and Warrington 1970 case study of KF
    dual task performance support- shows there must be separate subsystems
  • limitations of WMM
    lack of detail of the central executive - Baddeley says 'the central executive is the most important but the least understood component of working memory'
    overly simplified
    lacks ecological validity