AO3 - WMM

• Strength - case study - KF

  Shallice + Warrington - Clinical evidence

  suffered brain damage, STM for auditory information was poor but he could process visual information normally. Suggests that his phonological loop was damaged, while other memory areas were unaffected - Supports the view that there are separate visual and acoustic memory stores
• Limitation - Case study

  However, evidence from brain damaged patients may not be reliable because it concerns unique cases with patients who have had traumatic experiences. - can't be generalised as their experience is unique
• strength - support for visual-spatial sketchpad

  Baddeley - study of dual task performance - participants found it harder to carry out two visual tasks at the same time than do a verbal and a visual task together, this is because both visual tasks compete for the same subsystem, whereas there is no competition with a verbal and visual task - meaning there must be a separate subsystem that processes visual input and also a separate system for verbal processes
• Limitation - lack of clarity over the central executive

  Baddeley - said the central executive was the most important but the least understood component of working memory. There must be more to the central executive than just being 'attention', for example, it is made up of separate subcomponents - therefore the working memory model hasn't been fully explained