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The Multi-Store Model

Sensory Input Attention

Sensory Register
Encoding: Modality specific e.g. Taste stored
as taste

Duration: <1 second (Sperling 1960)

Capacity: Nine items (iconic memory ­Sperling 1960)

Aim To investigate the capacity of iconic memory.
Method A three by four grid of numbers was flashed for 0.05 seconds.

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Short term memory
Encoding: Acoustic (Conrad)
Aim The aim of the study was to investigate the nature of coding in
Method Conrad presented participants with several series of 6 letters
visually at a rate of 0.75 seconds per letter. The letters used were
selected from B, C, F, M,…

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Capacity: 7+-2 (Jacobs and Miller)
Aim To investigate the capacity of short term memory
Method Participants were read lists of either words or numbers that they
had to recall immediately after presentation. Jacobs gradually
increased the length of these digits etc until the participant could
only accurately recall the information,…

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Long term memory
Coding: Sematic (Baddeley 1960)
Aim Investigate coding of long term memory and short term memory
Method Baddeley conducted two different experiments ­ one to measure STM, and
one to measure LTM. He used list of words and found that the type of error
made depended on the…

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MSM is over-simplified ­ FK had a motorbike accident: Normal LTM but STM
capacity of two items. If STM is necessary for rehearsal into the LTM his LTM
would have also been impaired.
Lab experiments lack ecological validity, have demand characteristics and can't
apply to real life.


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