Clinical evidence

• P- one strength is support from Tim Shallice and Elizabeth Warrington’s (1970) case study of patient KF
• E- after his brain surgery, KF had poor STM ability for auditory (sound) information but could process visual information normally.
• E- for instance, his immediate recall of letters and digits was better when he read them (visual) than when they were read to him (acoustic). KF’s phonological loop was damaged but his visuo-spatial sketchpad was intact
• L- this finding strongly supports the existence of separate visual and acoustic memory stores