Multi-Store Model of Memory Flashcards
Factors of sensory register
Comes from environmental stimuli
Iconic memory and echoic memory
Duration: less than a second
Capacity: high (100 million photoreceptors in eye)
Will only pass on to STM if you pay attention
Iconic memory
Visual information coded visually in the sensory register
Echoic memory
Sound or auditory information coded acoustically in the sensory register
STM
Capacity: limited to 7 +/- 2 items
Duration: ~30 seconds unless rehearsed
Coding: acoustically
Will pass on to LTM with maintenance rehearsal
Factors of LTM
Capacity: unlimited
Duration: possible unlimited unless information is lost by forgetting
Coding: semantically
Recall requires retrieval
Retrieval
Transferring information from LTM back to STM in order to recall certain items
Evaluation of MSM
Evidence suggests both STM and LTM are divided into qualitatively different subcomponents
However, it remains ambiguous how separable LTM and STM are:
- chunking of information in STM can be dependent on meaning, meaning is stored in LTM
- LTM relies on STM as there is no retrieval of information without STM
Furthermore, memories are encoded into LTM not due to rehearsal but rather complex processing
Multi Store Model of Memory
Proposed by Atkinson and Shiffrin in 1968,
Described as a 3 unit model of memory in which the units are linked by processes which enable the transfer of information from one to another