A measure of how long a memory lasts before it is no longer available.
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What is the difference between the duration of STM and LTM?
STM has a limited duration; LTM has unlimited duration.
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What is the key study for the duration of STM?
Peterson & Peterson (1959)
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How many students were enlisted in Peterson & Petersons study?
24
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What did participants have to recall in Peterson & Petersons study?
A consonant syllable which had no meaning.
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Why were participants in Peterson & Petersons study given a 3 digit number?
So rehearsal was prevented when recalling the nonsense syllable (as they counted down from this number in 3s or 4s)
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How many trials was each participant given in Peterson & Petersons study?
2 practice trials followed by 8 real trials.
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What was the retention interval on each trial?
3, 6, 9, 12, 15, 18 seconds.
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What did Peterson & Peterson find?
Pps remembered 90% when there was a 3 second interval. Pps only remembered 2% when there was an 18 second interval.
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What did Peterson & Petersons findings suggest?
When rehearsal is prevented, STM lasts about 20 seconds max.
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What is a criticism of this study?
They are only studying memory for syllables and words; issues with validity.
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Who challenged the findings of this study and why?
Marsh et al - when pps do not expect to be tested, forgetting occurs after 2 seconds.
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Evaluation: What did Nairne et al find?
Duration of STM may not be as short as suggested - items could be recalled 90 seconds after when pps were asked to recall the same items across trials.
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Other cards in this set
Card 2
Front
What is the difference between the duration of STM and LTM?
Back
STM has a limited duration; LTM has unlimited duration.
Card 3
Front
What is the key study for the duration of STM?
Back
Card 4
Front
How many students were enlisted in Peterson & Petersons study?
Back
Card 5
Front
What did participants have to recall in Peterson & Petersons study?
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