the multi-store model of memory

• P: controlled lab studies on capacity, duration and coding support the existence of a separate short and long term store, which is the basis of the MSM

  E: studies using brain scanning techniques have also demonstrated that there is a difference between STM and LTM. Beardsley found that the prefrontal cortex is active during STM but not LTM tasks

  L: this evidence provides strong support for the MSM
• P: psychologists have also shown that different areas of the brain are involved in STM and LTM from their study of individuals with brain damage

  E: one case involved a man referred to as HM. his brain damage was caused by an operation to remove the hippocampus from both sides of his brain to reduce severe epilepsy he suffered. HM's personality remained intact but he could not form new LTMs

  L: this provides support for the MSM's notion of separate stores, as HM was unable to transfer information from his STM to LTM, but was able to retrieve information from before his surgery
• P: the MSM suggests that both STM and LTM are single unitary stores. However, research does not support this

  E: the working memory model and its supporting research shows that working memory is divided into a number of different stores. the same is true for LTM. research shows there are a number of different kinds if LTM and each behaves differently. maintenance rehearsal can explain long term storage in semantic memory but doesnt explain long term episodic memories

  L: this suggests that the MSM may be overly simplistic