Memory 2
posted 2/15/06
Reading Assignment: Chapter 7
Finish slides from previous lecture. Then . . .
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The Seven Sins of Memory (Schacter, D.L. (1999). American Psychologist,
54(3), 182- 203.)
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Basic idea:
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Memory has short-comings
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These aren't flaws in the system
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Instead, ______________ of otherwise useful features
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Use the "sins" as clues about ______________________
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2 Kinds of Evidence
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1. ________________ evidence
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Memory experiments
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Studies with patients who have memory disorders
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2. _________________ evidence
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Studies of patients with brain lesions
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Studies using neuroimaging techniques
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E.g., Positron emission tomography (PET)
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_____________________________ (fMRI)
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Shows which areas of the brain are using the most blood and ________
Sin #1: ___________________
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Memory for information _________________ over time
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Retrieval failure or loss from storage?
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"Use it or lose it" memories (what does this show?)
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______________ forgetting
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Loss of information from ______________ memory
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(How does working memory differ from STM?)
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Gradual and __________- transience are different
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Brain-damaged amnesic patients have long-term forgetting but perform well
on working-memory tasks (e.g., digit __________)
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Other patients have intact long-term memory but no immediate retention
(working memory deficits in the ______________________ loop)
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Imaging studies
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Activity in 2 brain regions during encoding differentiates words that are
later ___________ from those that are _____________
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Shows an encoding failure?
Sin #2: _____________________________
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Lapses of _____________ during encoding or during attempted retrieval
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Absent-mindedness during _____________
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E.g, forgetting where I put the keys
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__________ of processing
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Change blindness (shallow encoding?)
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Absent-mindedness during _____________
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Errors of ________________ memory (failure to execute plan)
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Event-based: cue is not recognized
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Time-based: cue is not generated (especially in old age)
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Patients with frontal lobe lesions show deficits in planning
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Perform well on event-based but not ___________-based tasks
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PET studies show frontal lobe activation during prospective remembering
Sin #3: ____________________
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Memory is ______________ irretrievable, even when cues are presented
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__________________________
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Unable to produce a word, but know it's available
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Can produce partial phonlogical or semantic info
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Retrieval of similar but incorrect words may interfere with retrieval of
target word ("__________")
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More pronounced with old age, especially names
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_______________ cueing effect
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Subjects learn and retrieve lists of words
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Retrieval cues related to a previously studied word can block, rather than
enhance, retrieval of target word
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Retrieving on item can block retrieval of other related items
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Shaw et al. (1995)
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Questions about some sweatshirts inhibited retrieval of other sweatshirts
relative to school books (not asked about)
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__________ (_________ aphasia) = lack of words for objects
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Deficit may be specific to proper names, or one type of proper name (e.g.,
names of people)
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Proper name retrieval activates the left temporal pole in the brain.
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Other near-by areas for names of animals, tools, etc.
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___________ inhibition
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Brain regions activated during retrieval inhibit other areas
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May be a ______________ part of retrieval
Summary so far
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Sins of _____________
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Transience
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Absent mindedness
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Blocking
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Sins of commission
Sin #4: ____________________
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Memory is present, but is ____________ to the wrong time, place, person,
source, etc.
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Source confusion: correctly remember, but misattribute fact to wrong ___________
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E.g. saw rather than imagined, read rather than heard
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Eyewitnesses: May recognize the defendant, but mis- remember from where
(from crime scene rather than from TV)
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________________: No subjective experience of remembering. Instead, attribute
idea to own imagination.
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Unintentional plagiarism
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False __________ effect: is name is familiar, attribute that to fame of
the person named, rather than to previous previous learning of list of
names
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False recall or recognition
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Roediger & McMermott (1995)
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Study words: candy, sour, sugar, bitter, taste, tooth
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Test on studied words (taste), nonstudied unrelated words (point), nonstudied
theme word (_________)
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65-80% of Ss showed __________ recognition
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__________________ was as high as for studied words
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Subjects may be remembering gist
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More common in older adult
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Damage to ___________ lobes associated with source memory errors and false
recognition
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Amnesic and Alzheimer's patients show ______________ susceptibility
to false recognition.
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Decreased memory but also decreased false memory
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Brain imaging studies show similar brain activity during true and false
recognition
Sin #5: ________________________
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Illusory memories occur in response to a ___________
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Loftus et al. (1978) study
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Subjects saw accident with stop sign
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Later asked about a yield sign
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Still later reported that they had seen a yield sign
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Big question: did "new" memory ____________ old one?
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Source misattribution explanation: Ss misattribute source of yield sign
memory to slides of accident rather than do experimenter
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Wells & Bradfield (1998)
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Subjects viewed crime video
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Picked gunman out of a (no ___________) photo lineup
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Those given confirming feedback later had higher confidence in their recollection,
more "memory" for _______
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False _______________
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Kassin & Kiechel (1996)
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Ss participated in a RT study, told not to hit ALT
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Experiment accused S and witness confirmed
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Many Ss "____________", especially in fast-paced witness condition.
Sin #6: ________________
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Memories influenced and distorted by current ________________________
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__________________ bias: exaggerate consistency between past and present
beliefs, attitudes
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McFarland & Ross (1987)
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Rate girl/boyfriend and relationship in initial session
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Rate again 2 months later
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Those who became more negative misremembered initial rating as more ____________
than it was
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Those who became more positive misremembered initial rating as more ____________
than it was
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Retrospective bias is a function of individual's implicit _____________
about whether they have changed over time.
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If one has reason to belief feelings have changed, then may exaggerate
differences between past and present feelings
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Conway & Ross (1984) ____________ skills experiment
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Social judgment implications
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Walsh et al.
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Subjects read names of European Amerian and African American names. Asked
if they recognized any as names of __________ in the media (none were).
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Subjects "recognized" more ________________ names
Summary so far
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Forgetting something you want ____________
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Transience
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Absent mindedness
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Blocking
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"Remembering" something that _______________
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Misattribution
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Suggestibility
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Bias
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Remembering something you want ______________
Sin #7: __________________
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Intrusive recollections of ______________ events
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______________ over negative events or symptoms
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Chronic fears and phobias
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____________ forgetting
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Instructed to remember some (trauma-related) words and forget other
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Control subjects can do this
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____________ patients cannot
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Suppressing a memory can cause a ______________
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Negative mood can increase access to memories of negative events, increase
persistence.
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Imaging studies show that activity in the _______________ during emotional
films is correlated with recall of the film (but not for control film)
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Amygdala damage associated deficits in memory for emotional stimuli
Are these 7 sins ______________?
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Transience: Adaptive to forget information that is not current (and thus
not maintained with rehearsal)
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Blocking: Don't want to retrieve __________________________. Blocking prevents
this.
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Absent mindedness: Don't want to remember every _______________
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Misattribution & Suggestibility
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Source information is often a minor detail unlikely to be needed later
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Memory for ____________ is more efficient than verbatim memory and allows
for intelligent processes such as _________________ and transfer
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Bias: Schemas may distort memory, but they also serve important __________
functions like guiding retrieval
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Consistency bias enhances self appraisal and life satisfaction
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Persistence: Important to have long-term memories of emotional stimuli
like threats. Promotes __________.