WMM

WMM

1. Central executive

   • Visuospatial sketchpad
     • LTM
     • "Inner eye"
       • Visual and spatial information
         • Visuo-cache store (Logie (1995))
           • Inner scribe for spatial relations
   • Episodic Buffer
   • Phonological loop
     • Articulatory process
       • holds words heard/seen and silently repeats them (a maintenance rehearsal)
     • Phonological store
       • holds words you hear
     • Auditory information
   • Key component
     • directs attention to tasks
       • "Boss"

2. All components have limited capacities and durations, hence the need for all of them

3. AO2

   • Strengths
     • Baddeley & Hitch
       • Experiment - Task 1: true or false task (central executive) then with a version of Task 2: a) say random numbers (articulatory loop and central executive) or b) say "the" repeatedly (articulatory loop)
         • First test slower as involved both
           • Completing 2 tasks that involve same component causes difficulty
     • Comparisons with MSM
       • offers better account of STM
         • moves on from describing immediate memory as a unitary store
         • offers maintenance rehearsal as an option rather than the only means in which info is kept in STM
         • emphasises processes more (MSM = structure)
   • Weaknesses
     • Central executive - too vague
       • notion of single central executive is suggest wrong (could be several components) (case study of EVR)
         • shows more complex than currently represented
     • evidence from brain-damaged patients, however issues with this are:
       • 1. can't make a "before & after" comparison so not clear if changes in behaviour are caused by the damage
       • 2. process of brain injury is traumatic, which may in itself change behaviour