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Memory
Duration
A01
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Leaderboard
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Created by
jaya
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Cards (17)
What was the main focus of Peterson and Lloyd Peterson's 1959 study?
Duration of short-term memory (
STM
)
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How many students were tested in the Peterson and Peterson study?
24 students
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What type of syllable were students asked to remember in the study?
Consonant
syllable
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What was the purpose of counting backwards in the Peterson study?
To prevent
mental rehearsal
of the syllable
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What were the varying retention intervals used in the Peterson study?
3, 6, 9, 12, 15, or 18
seconds
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What was the average recall percentage after 3 seconds in the Peterson study?
About
80%
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What was the average recall percentage after 18 seconds in the Peterson study?
About 3%
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What conclusion did Peterson and Peterson draw about STM duration?
STM duration may be about
18
seconds
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Who conducted a study on long-term memory (LTM) in 1975?
Harry Bahrick
et al.
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How many American participants were studied by Bahrick et al.?
392
participants
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What age range did the participants in Bahrick's study fall into?
17
to
74
years old
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What materials were used to test recall in Bahrick's study?
High school
yearbooks
and
photos
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What was the accuracy of photo recognition for participants tested within 15 years of graduation?
About
90%
accurate
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How did recall accuracy change after 48 years according to Bahrick's findings?
Declined to about
70%
for photo recognition
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What was the accuracy of free recall after 15 years in Bahrick's study?
About
60%
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What was the accuracy of free recall after 48 years in Bahrick's study?
About 30%
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What does Bahrick's study suggest about the duration of LTM?
LTM may last up to a
lifetime
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