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Rehearsal Loop
Stimulus Attention
Sensory Short term Long Term
Memory Memory (STM) Memory (LTM)
Retrieval
· Visual, auditory, haptic
coding
· Mainly acoustic · Mainly semantic
· Limited Capacity
coding coding
· Very brief duration
· Limited capacity · Unlimited capacity
· Brief duration · Unlimited
duration
Proposed by Atkinson and Shiffrin 1968…read more

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Positives
· Sperling (1960): participants saw a grid of
digits and numbers for a blink of an eye. They
were asked to write down all 12 items. When
asked to report the whole thing, recall was
poorer (5 items recalled, 42%) than when
asked to give one row only (3 items, 75%) This
shows that information decays rapidly in the
sensory store.…read more

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Glanzer and Cunitz (1966): participants given a
list of about 20 words, presented one at a
time, and then asked to recall any words they
could remember. You tend to remember
words from the start of the list (a primacy
effect) and from the end of the list (recency
effect) but are less good at remembered the
ones in the middle. The primacy effect occurs
because the first words are best rehearsed
and transferred to LTM. The recency effect
occurs because these words are in STM when
they start recalling the list.…read more

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Negatives
· The MSM is an oversimplification of the
memory process
· There are other types of LTM such as episodic
(memory for an event) and procedural
(memory of how to do things) LTM which the
model does not consider. This model has only
one LTM store. The model also proposes just
one STM store and yet there are probably
more.…read more

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The model also proposes just `rehearsal' for
how data becomes stored in LTM, yet there
are things we can remember without ever
having rehearsed the information e.g. Flash
Bulb Memories
· Many experiments for memory lack ecological
validity as the tasks involved are highly
artificial. They are laboratory based studies
which do not represent how our memory
works in everyday situations…read more

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