types of long term memory MEM Flashcards
episodic memory
Long term store for personal events - when they occurred, people, objects, places. Need effort for retrieval
semantic memory
For knowledge of the world, facts of words and concepts
procedural memory
Knowledge of how to do things - learned skills unconscious recall
What did Tulving relise about the MSM?
It was too simplistic and inflexible
which 3 LTM stores did Tulving propose?
- episodic memory
- semantic memory
- procedural memory
Strength for types of LTM
Clinical evidence
evidence from the famous case studies of HM (Henry Molaison) and Clive Wearing
- Episodic memory in both men was severely impaired due to brain damage
- semantic memories were unaffected
This evidence supports Tulving’s view that there are difference memory stores in LTM - one can be damaged but other stores are unaffected
Limitation of types of LTM
counterpoint to clinical evidence
- Studying people with brain injuries can help researchers understand how memory is supposed to work normally BUT clinical studies are not perfect
- there is a lack of control of variables
- The brain injuries experienced= usually unexpected
- Researcher has no knowledge of the individuals memory before the damage
- Without this it is difficult to judge how much worse it is afterwards
- This lack of control limits was clinical studies can tell us about different types of LTM
*
real world application
strenght
- help people with memory problems
- E.g. as people age, the experience memory loss
- But research shows that this is episodic memory - becomes harder to recall memories of personal events / experiences that happened in the past but recent episodic memories stay intact
- Belleville et al 2006 devised an intervention to improve episodic memories in older people
- Trained participants performed better on a test of episodic memory after training than a control group
Shows that distinguishing between types of LTM enables specific treatments to be developed
conflicting neauroimaging evidence
limitation
there are conflicting research findings liking types of LTM to area of the brain
* E.g. Buckner and Peterson 1996 reviewed evidence regarding the location of semantic and episodic memory
* They concludes semantic memory is located in the left side of the prefrontal cortex and episodic memory on the right
* But other research links the prefrontal cortex with encoding of episodic memories and the right prefrontal cortex with episodic retrieval (Tulving et al 1994)
This challenges any neurophysiological evidence to support types of memory as there is poor agreement on where each type might be located