WMM-Baddeley&Hitch

WMM-Baddeley&Hitch

1. argue STM has different stores for visual and verbal, so dual tasks are not able to be done efficiently

2. Central executive: filter for relevant information, oversees and co-ordinates other components, limited capacity of 4 components, more tasks are practised less demanding they are on CE.

   • Research- D'Esposito found prefrontal activated when doing both verbal and visual= supports CE is separate area.

3. Phonological loop: auditory information in speech form (inner voice) capacity of about 2 seconds, phonological store=words you hear. Articulatory process= maintenance rehearself

   • Baddeley= P shown 5 1 syllable words then 5 multi-syllable words, Ps recalled more 1 syllable words as takes less time to say them in their head.=word length effect

4. Visuospatial sketchpad- coded visually (inner eye) capacity of 3/4 objects, visual cache stores visual data. Inner scribe records arrangement of objects in visual field.

   • Vogel= 3-12 objects for 900 milliseconds, then shown another either identicle or different, could identify whether 4 objects were same but that was limit.

5. Episodic buffer- added as CE has no storage, temporary store, also time sequences memories and transfers information to LTm with limit of 4 chunks.

   • Dual tasks: Visual and verbal task can hapen simultaneously but not two visual tasks, as interfrere with eachother and performance is reduced, supports that phonological loop and sketch pad are separate.

6. AO3= Baddeley, showed two visual tasks led to more difficulty than visual and verbal task, supports limited resources of WMM.

   • KF support, poor STM for verbal but could process visual info suggesting phonological loop had been damaged
   • support for brain scans= Braver: Ps did tasks involving CE, prefrontal cortex activity inceased. shows CE is physical entity
   • Lack of clarity over CE: unsatisfactory and doesnt exlpain anything, CE should be more clearly described not just simply attention.