PSYC 256 Lecture Notes - Lecture 11: Sensory Memory, Mental Chronometry, Brute-Force Search

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13 Jun 2018
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MODAL MEMORY MODEL
Storage Capacity Model
What type of information can be stored?
How long is that information held in storage?
Assumption: information = information = information
Short-term & long-term memories (not working memory)
Can still lose stuff in sensory memory
Sensory Memory
Brief storage of sensory information
Fades quickly without deeper processing
Separate memory store for each sense
o Iconic (visual)
o Echoic (auditory)
Sperling (1960)
Whole report: report all rows
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o
People could only report about 4 items accurately
o Invariant over number of letters and exposure duration
Subjects reported that the whole array was available on the screen even after it
disappeared, but it seemed to fade before they could finish reporting what they
saw
Partial Report: tone signals subject to report one row of the display
o
Iconic Memory
Large capacity
Quick duration
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Echoic Memory
Auditory sensory memory
Smaller capacity than iconic
Longer duration than iconic
> Persistence of external environmental stimulus
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