Memory

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What are the features of the sensory register?
temporarily stores info from our senses, 1/4-1/2 a second, dissapears through spontaneous decay of we dont pay attention
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What is the study on the sensory register?
Sperling (1960) - ppts shown grid with 3 rows of 4 letters for 50 milleseconds. recalled av 3 on specific rown - could have been 3 on any row so almost whole grid in sensory register
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What are the features of STM?
limited durration (0-18s), limited capacity (7+/-2), mainly acoustic coding
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Study on duration of STM?
Peterson and Peterson (1959) - lab ex, 24 ppts asked to recall trigrams, to prevent rehearsal ppts asked to count back from a given number, ppts asked to recall trigram after 3,,6,9,12,15, or 18s, 3s = 80% recall, 18s + less than 10% recall
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Study on capacity of STM?
Jacobs (1887) - string of letters and numbers. AND Millers magic number (1956) chunking
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Features of LTM?
unlimited capacity (permenant), coding = semantic, unlimited duration, episodic, semantic and procedual memory
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Study on LTM?
Bahrick et al (1975) very long term memories - 15 years of leaving school = 90% accuracy of recognising names and faces, 60% accuracy on free recall. 30 years = free recall 30% accurate
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What is episodic memory?
storing info about events that we have expereinced in out lives
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What is procedual memory?
responsible for knowing how to do thinggs (motor skills) e.g. walking
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What is semantic memory?
responsible for storing info about the world, i.e. meanings and facts
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What was the study that investigated coding in STM and LTM?
ppts given 4 sets of words that were either acoustically similar/dissimilar or semantically similar/dissmiliar. ppts asked to recall words either immediately or after 20 min task. ppts had problems recalling acoustically similar immediately n semanti
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who created the multi-store memory model?
Atkinson and Shiffrin (1968)
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What are the stores in multi store memory model?
Sensory register, STM and LTM
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What is an important part in MSM?
Rehearsal
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Card 2

Front

What is the study on the sensory register?

Back

Sperling (1960) - ppts shown grid with 3 rows of 4 letters for 50 milleseconds. recalled av 3 on specific rown - could have been 3 on any row so almost whole grid in sensory register

Card 3

Front

What are the features of STM?

Back

Preview of the front of card 3

Card 4

Front

Study on duration of STM?

Back

Preview of the front of card 4

Card 5

Front

Study on capacity of STM?

Back

Preview of the front of card 5
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