Multi-Store Model by Atkinson & Shiffrin (1968)

Multi-Store Model by Atkinson & Shiffrin (1968)

1. STM

   • Output
   • Attention --->
     • Sensory Register
       • Input
       • Iconic Memory - Visual
         • Echoic Memory - Sound
       • Duration: 0.25-0.5secs
     • When we focus on a certain sensory information
   • Rehearsal --->
     • When we repeat the information over and over again until it sticks
     • LTM
       • Capacity: LIMITLESS
         • Duration: few minutes - lifetime
           • Main Form of Encoding: Semantic
   • <--- Retrieval
     • LTM
     • The recall of stored memory
   • <--- Rehearsal
     • STM
       • Capacity: 7 +or- 2 bits (LIMITED)
         • Duration: 18secs (without rehearsal)
           • Main Form of Encoding: Acoustic
     • When we repeat the information over and over again until it sticks

2. Strength

   • Peterson & Peterson
     • Duration without rehearsal is 18secs but it could be retained longer if rehearsed providing evidence for a separate STM store and the role of rehearsal
   • Clive Wearing
     • STM was intact while his LTM was damaged, this is evidence for different stores or memory and the process of forming LTM

3. Weakness

   • Peterson & Peterson
     • Ecological Validity - artificial environment and may not provide a valid explanation for how memory works in real life
   • Clive Wearing
     • He can remember how to play the piano but could not recall other LTM like when he went to university, this can be used as evidence for that there might be more then one zltm store