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Cognitive Psychology is all to do with thinking
skills and how we interpret the world around
us, and how we make sense of the world.
What three things do we use to talk about the
Encoding- The way that our memory prefers
to be told things
Capacity- How much stuff our memories can
Duration- How long stuff can be held in our
memory…read more

Slide 3

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Sensory memory- prefers any of the five
senses- touch, taste, sound, smell and sight.
This means that it is modality free. It has a
capacity of enough and a duration of less
than 1 second.
Short term memory- It prefers acoustic so
sound rather than words. It has a capacity of
7 +- 2 so you can remember between 5 and 9
items. Also it has a duration of between 15-18
seconds. If it is not taken into the LTM
before this time then it is forgotten.
Long term memory- It prefers semantic
which is adding meaning to your memory. It
has a capacity of no upper limit as your
LTM is limitless. It also has a duration of a…read more

Slide 4

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Aim- To find out how long STM was when rehearsal
had been prevented
Procedure- The took participants and asked them to
try and remember nonsense three letter trigrams,
which they were shown. After periods of between 3-
18 seconds the participants were asked to count back
in threes from a certain number in order to prevent
rehearsal from taking place. The participants were
then asked to say back the trigram.
Findings- They found that after 3 seconds 80% of the
trigrams could be correctly recalled, however after
18 seconds less than 10% of the trigrams were
correctly recalled.
Conclusions- This means that the duration of STM
must be somewhere between 15-18 seconds when
rehearsal is prevented. It also shows that if
information is not rehearsed then it simply vanishes…read more

Slide 5

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It was created by Atkinson and Shiffrin. It
suggested that all of the memories were in a
long line. In order for something in sensory
memory to get into short term memory you
must have attention and in order for
something to go from STM to LTM you
must have both attention and rehearsal. Also
forgetting can occur at any stage of the
model.…read more

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· MRI scans- when patients are placed in MRI
scans and are asked to do different tasks,
different parts of their brain lights up
suggesting that each part of the memory has
its own store.
· - Brain damaged people- Some people who
have experienced brain damage can not
remember things in their STM but they can
remember things from their LTM. This
must mean that they are stored in their own
stores. E.g. Clive wearing and H.M…read more

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