Lecture 10 - Feb 8th

# Ex cannot remember your old phone number something

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Ex: cannot remember your old phone number -something that you’ve learned now interferes with info you’velearned before -How long canwe hold the information in STM? Brown and Peterson tasktested interference and decay accounts. Patient remembers X, T, A Condition1: Interference 156-count backwards by 3 fromthis number -rehearsal is prevented by this difficult taskof counting backwards -people could only hold the 3 letters for 18 seconds -info fromSTM is lost Condition2: No interference Ask the participant to report original letters after varying time delay. -info tells researchers that both decay and interference prevents people from remembering (contribute to forgetting) -always something that’sgoing on that interferes -if we want to commit something to our memory, we have to repeat it -A clueto division between STM and LTM is rehearsal Serial Position Effect : participants are asked to learn a list of items Materialize,Falsify, Understand, Walk, Judge, Learn,Ferment, Consolidate,

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Organize, Master. Write downas many items in no particular order that you canremember. -recall fromitems at the end of the list we remember best, and then we have good memory for items at the beginning of the list, but we don’t remember much fromthe middle of the list -apply to real life: be one of the last interviewees because you’ll be remembered best -it is hard to fight these effects. if you can’t go last, go first Findings: Recency Effect -remember things fromthe end of the list well STM Primacy Effect -remember things fromthe beginning of the list well LTM -researchers argue that the recency comes into effect because the items at the end of the list are in our STM (recall them rightaway). Primacy effect is argued to be remembered fromthe beginning of the list because these items have been contributed to LTM (we start rehearsing these) -one of the first arguments for the distinction between short and long term memory -LTM canoperate in minutes, or how long it took to memorize 10 items froma list Serial PositionEffect: Suggests two separate systems for STM and LTM Can we eliminate these effects? If Primacy reflects rehearsal of info and storage to LTM, we shouldbe able to eliminate it if we stop rehearsal.
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• Winter '08
• LEVITIN
• Memory processes, STM, Baddeley's model of working memory, Alan Baddeley, hold theinformationin STM

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