Multistore Model
- Created by: Daniel_Waghorne
- Created on: 08-11-15 11:00
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- Multistore Model
- Atkinson & Shiffrin (1968)
- Sensory Register
- 1/2 second Duration
- Iconic Memory
- Visual information
- Echoic Memory
- Sound based information
- Info from Environment
- Information Forgotten
- Short Term Memory
- Sensory Register
- 1/2 second Duration
- Iconic Memory
- Visual information
- Echoic Memory
- Sound based information
- Info from Environment
- Information Forgotten
- 7+/-2 - Capacity
- Under 30 Seconds - Duration
- Acoustic Code
- Sound
- Information Forgotten
- Sensory Register
- Long Term Memory
- Short Term Memory
- 7+/-2 - Capacity
- Under 30 Seconds - Duration
- Acoustic Code
- Sound
- Information Forgotten
- Information Forgotten
- Limitless - Capacity
- Up to a Lifetime - Duration
- Semantic Code
- Meaning
- Short Term Memory
- Supporting Evidence
- Free Recall Experiment
- Serial Position Curve
- Primacy Effect
- Participants tend to recall the first words because they were rehearsed so they were passed to LTM. This effect reflects recall from LTM.
- Further Evidence: Slower presentation improves the Primacy Effect but has no effect on the Recency Effect.
- Asymptote
- Participants tend to recall the middle portion poorly. The increasing number of items fill STM and are displaced before reaching LTM.
- Recency Effect
- Participants tend to recall the last items on a list. Thought to reflect recall from STM because of no displacement.
- Further Evidence: The Recency Effect disappears if the last words are not recalled straight away, there is no effect on the Primacy Effect.
- Primacy Effect
- Suggests the existence of two stores as the model suggests.
- Serial Position Curve
- Studies of Brain Damaged Patients
- HM
- Could still learn skills - Procedural Memory
- Mirror Drawing
- Normal STM but greatly impaired LTM
- Could still learn skills - Procedural Memory
- KF
- Digit span of 2
- Greatly impaired STM but normal LTM
- HM
- Free Recall Experiment
- Criticism
- Too simple
- There is more than one STM store and more than one LTM store.
- Does not take factors into account such as strategies people use to remember things
- Information must flow in both directions from STM to LTM.
- Evidence from Chunking
- Brain Damaged Patients don't fully support the model.
- KF's STM impairment was limited to verbal materials however did not extend to meaningful sounds.
- Suggest STM has more than one store.
- HM could still learn new skills but not facts or events
- Suggests more than one type of LTM
- KF's STM impairment was limited to verbal materials however did not extend to meaningful sounds.
- Too simple
- Pay Attention
- Rhearsed
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