multi store model.

• who and when made the model?

  Atkinson and shiffrin - 1968.
• what does the model propose?

  the model is a linear model which suggest information can pass through 3 systems.
• what are the 3 systems?

  sensory memory, stm and ltm.
• what is the function of sensory memory?

  information enters through environmental senses - the 5 senses. the sensory memory can briefly store the information but has a duration of around a second (sometimes 2). it encodes sense-specific.
• how does information get from sensory memory to the stm?

  attention is required.
• what is the stm's role?

  can hold information for around 15-30 seconds and mostly encodes acoustically. it can hold 7 units but findings show using chunking can allow up to 9.
• how can information go from the stm to ltm and vice versa?

  rehearsal is needed for it to move to the ltm. this may involve a rehearsal loop which can hold 9 units. by retrieval, the ltm can pass information back to stm.
• what is the ltm functions?

  has an unlimited capacity and duration. can encode in any way but favours encoding semantically.
• evaluate using S.


  miller - stm capacity is 7 but can reach 9 through chunking. but chunking can make info inaccurate. eye witnesses choosing wrong - information wrongly rehearsed due to panic or trauma. Blakemore - Clive could use stm for up to 20 seconds then forget everything, showing importance of rehearsal.
• evaluate using C.


  shallice + warrington - conflicting evidence. other factors may contributed as well as rehearsal like training. reductionist!
• evaluate using T. 


  useful during time but not as much anymore. however it is a lab study - ecological validity reduced.
• evaluate using U.


  scientific, case studies and brain scans or knowledge.