Multi Store Memory Model
Sensory Memory; temporary store, capacity-large, duration; visual-1/10 of a second, auditory- 2 seconds. Info lost through decay and displacement.
Short Term Memory- brief storage for information being used, capacity- 7+-2 chunks, duration- less than 30 seconds without rehearsal. Info lost through decay, displacement, interference.
Long Term Memory- Permanent store, capacity- virtually unlimited, duration- from minutes to a lifetime. Information lost by encoding failure, consolidation failure, interference, motivated forgetting and retrieval failure.
Evaluation Of MSM
Support for the MSM.
- Primacy and recency effect
- Baddeley's research into acoustic and semantic encoding show LTM and STm as separate stores.
- Case Studies of brain damaged patients can show that short term and long term memory are separate stores.
Problems and Limitations of the MSM.
- Rehearsal does not always lead to storage and storage can occur without rehearsal.
- if encoding in short term memory is mostly acoustic how do we understand language.
- Initial oversimplification of long term memory but this was readdressed by Tulving (semantic and episodic) and Cohen & Squire (procedural and declarative)
- Some types of information are not amenable to rehearsal eg. smells.