The working memory model is the part of the short term memory which is governed by the ‘central executive which monitors and coordinates the operation of the store systems; Phonological loop and visuo – spatial sketchpad. The phonological loop allows sounds to be stored for brief periods. The visuo spatial sketchpad allows visual and spatial information to be stored for brief periods. The two slave systems within the WMM are completely separate and can work individually.
A piece of evidence which shows support for the slave systems being two separate systems within the WMM is the case of KF. He had a motorcycle accident and damaged his brain and memory, which therefore left him with no new memory,