representation of STM that suggests that STM is a dynamic processor of different types of information using sub units co ordinated by a central decision making system
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central executive
attentional process: monitors incoming data, makes decisions and allocates slave systems to tasks. very limited processing capacity
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central executive slave system - phonological loop
processes auditory information (acoustic coding). preserves the order in which information arrives. subdivided into - phonological store (stores words you hear) and articulatory process (allows maintenance rehearsal - capacity of loop is 2 seconds)
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central executive slave system - visuo-spatial sketchpad
processes visual and spatial information in a mental space. limited capacity Baddeley (2003) - 3/4 objects. Logie (1995) subdivided into visual cache (stores visual) and inner scribe (arrangement of objects in visual field)
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central executive slave system - episodic buffer
added by Baddeley 2000 - brings subsystems together into a single memory. bridge between WMM and LTM maintaining a sense of time sequencing. links WMM to wider cognitive processes. Limited capacity - 4 chunks
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main evaluative points of working memory model
lack of clarity over central executive, clinical evidence, studies support phonological loop, dual task performance, brain scanning studies
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evaluation of WMM - lack of clarity over central executive
Baddeley - least understood component of WMM needs to be more specified as not fully explained
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evaluation of WMM - clinical evidence
Shallace and Warrington (1970) - brain damage patient had poor STM for verbal but could process visual meaning phonological loop was damaged. however, may not be reliable due to unique cases of traumatic experiences
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evaluation of WMM - studies support phonological loop
Baddeley et al (1975) - hard to remember long words than short supporting the rehearsal principle (no longer than 2 seconds). repetitive tasks tie to articulatory process
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evaluation of WMM - dual task performance
supports visuospatial sketchpad. Baddeley (1975) - harder doing 2 visual tasks than 1 visual 1 verbal tasks meaning there must be separate slave systems
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evaluation of WMM - brain scanning subjects
braver et al (1997) gave tasks involving central executive while having a brain scan. activity in the left prefrontal cortex increased as tasks became harder (central executive had to work harder)
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Other cards in this set
Card 2
Front
attentional process: monitors incoming data, makes decisions and allocates slave systems to tasks. very limited processing capacity
Back
central executive
Card 3
Front
processes auditory information (acoustic coding). preserves the order in which information arrives. subdivided into - phonological store (stores words you hear) and articulatory process (allows maintenance rehearsal - capacity of loop is 2 seconds)
Back
Card 4
Front
processes visual and spatial information in a mental space. limited capacity Baddeley (2003) - 3/4 objects. Logie (1995) subdivided into visual cache (stores visual) and inner scribe (arrangement of objects in visual field)
Back
Card 5
Front
added by Baddeley 2000 - brings subsystems together into a single memory. bridge between WMM and LTM maintaining a sense of time sequencing. links WMM to wider cognitive processes. Limited capacity - 4 chunks
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