Cognition 7A – Memory 7B – Thinking, Problems Solving, Creativity, and Language
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Transcript of Cognition 7A – Memory 7B – Thinking, Problems Solving, Creativity, and Language
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Cognition7A – Memory
7B – Thinking, Problems Solving, Creativity, and Language
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Memory
Memory –
•Example –
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The Memory ProcessThree step process….
1.Encoding:
– Getting the info into the brain
1.Storage:
– Retaining the info
1.Retrieval:
– Getting the info back out
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4 Memory Models
1. Atkinson-Shiffrin 3 stage model
2. Modified Atkinson-Shiffrin
3. Connectivism Model
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Atkinson and Shiffrin’s 3 Step Model of Memory
Sensory memory – brief recording of sensory information •Example:
Short-term memory – memory that holds few items briefly before info is forgotten
•Example – Long –term memory – relatively permanent and limitless storage of memory.
•Examples:
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Sensory Memory• Sensory Memory –
• Examples:.– Iconic Memory –
– Echoic Memory –
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Short Term Memory• Short –term memory –
• Encoded visually, acoustically or semantically through rehearsal.
• Hold items for about 20 seconds.
Short Term Memory Activity
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Long Term Memory
• Long-term memory –
• Examples:
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Modified Atkinson – Shiffrin (3 Stage) Model
• 2 New concepts1. Working Memory –
that combines novel (?) or important info along with info retrieved from
– Instead of short-term memory being just a 20 sec. holding tank, this model includes the ability to briefly process info
• Some info skips the 1st two stages in Atkinson’s/Shiffrins and is processed into
• Example –
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Modified Three-stage Model of Memory
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Connectionism Model of Memory
• Connectionism –
– Many neurons may work together to process a single memory
• memory emerges from particular
• retrieval of the memory is a reconstruction based on each of the elements of the pattern
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How We Encode
2 Types of Encoding1. Automatically Processing
– Automatic– Parallel
2. Effortful processing – Rehearsal
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Encoding - Automatic Processing
Automatic Processing –
– Examples: • Time –
• space –
• Frequency –
• well learned info –
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Automatic Processing
• Parallel Processing –
– -unconscious or effortful
– Example:
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Automatic Processing
Spring is thethe most beautifultime of the year
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Encoding – Effortful Processing
1. Effortful Processing –
– Example:
• Rehearsal –
– Example:
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Ebbinghaus’s Forgetting Curve
• Ebbinghaus Curve –
• Overlearning –
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Effortful Processing• Spacing effect – distributed study is better for
long-term recall than massed study (cramming)– DO NOT CRAM!!!!!!!!!!!!
• Testing effect – repeated quizzing or testing improves retention
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Take out a piece of paper and name all the Presidents…
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Encoding Information• Serial Positioning Effect –
– Primacy Effect –
– Recency Effect –
• Von Rostorff effect –
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What We Encode…1. Visual Encoding: the encoding of
picture/visual images.Example –
2. Acoustic Encoding: the encoding of sound, especially the sounds of words.Example:
3. Semantic Encoding: the encoding of meaning.Example:
Encoding Exercise
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Visual Encoding– Imagery – visual images help us remember
concrete words (aided by semantic encoding)
Example:
– Rosy Retrospection – recalling high points, forgetting the worst• Example:
Encoding Exercise
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Mneumonics– Mnemonic Devices – any memory aid that uses
visual images and organizational devices• EXAMPLES:
1. Peg word system –
» Example: One is a bun (chicken squashing bun), two is a shoe (corn filling up shoe)…
1. Method of Loci –
» Example: remembering items on a grocery list by associating them with a place in our house (chicken is pecking at front door, corn smashed in foyer etc)
Encoding Exercise
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Mneumonics
3. Hierarchies –
4. Chunking –
» Example: PORN – Proactive Interference: Old info interferes with New Retroactive Interference: New interferes with Old
Encoding Exercise
Every Good Boy Does Fine1-800-IBM-HELP
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Acoustic and Semantic Encoding
Acoustic Encoding: the encoding of sound, especially the sounds of words.
•Example:
Semantic Encoding: the encoding of meaning.
•Examples:•Self Reference Effect –
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StorageTypes of Memory1.Sensory Memory
– Iconic– Echoic
2.Working Memory/Short-term3.Long-Term Memory
– Implicit Memory/Procedural Memory• Conditioned Memories
– Explicit Memory• Episodic Memory• Semantic Memory• Flashbulb Memories
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Sensory Memory
• Sperling’s memory experiment
• After flashing an image, participants had a momentary mental image of all 9 letters
• Iconic memory – – A momentary mental image that remains after the
image is gone
– Example: • A momentary mental image that remains after seeing
a phone number flashed on the TV
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Sensory Memory• Echoic memory –
– A momentary auditory impression that remains after the sound is gone
– Example:
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Working/Short-Term Memory• Duration – Brief (30 sec or less) without
active processing– Slightly longer for auditory info than visual info– Numbers better than letters
• Capacity - Limited– Magic number Seven
• Plus or minus 2
• The list of magic sevens
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Long-Term Memory
• Duration – • Capacity -
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Types of Long Term Memory
• Implicit Memory/Procedural Memory– Conditioned Memories
• Explicit Memory– Episodic Memory– Semantic Memory– Flashbulb Memories
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Types of Long-Term Memory
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Implicit Memories• Implicit/Procedural
Memories –
– Processed by and other brain areas
still intact with
• Examples:
– Conditioned Memories –
• Example:
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Explicit Memories• Explicit Memories – memories of
facts and experiences, consciously recalled– Processed by
• information is stored in the
• are stored in
– Infantile amnesia –
• Hippocampus is one of the last brain structures to develop
– Example:
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Explicit MemoriesEpisodic Memories -
Example:
Semantic Memories –
Example:
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Explicit Memories
• Flashbulb
– Facilitated by – Prolonged stress however, can
inhibit memory formation by
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Storing MemoriesMemory trace – memory is distributed
acoss groups of neurons
Long Term-Potentiation – physical basis for memory .
• Increases synaptic firing potential of a neuron by increasing the number of receptors on the receiving neuron.
• Neurons that fire together wire together…creating a memory.
• Memory boosting drugs– CREB – increases proteins that make a cell
more likely to keep a memory– Glutamate – enhances synaptic
communication (LTP)
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Amnesia• Amnesia – loss of memory
– Retrograde Amnesia – inability to remember past events
• Example– Alzheimer’s Patient Ronald Reagan
– Anterograde Amnesia – inability to create new memories
• Loss of Explicit Memory but not Implicit memories
• Examples:– Clive wearing– 50 1st dates
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Exceptionally clear memories of emotionally significant events are called
Senso
ry M
emori...
Flash
bulb Memo...
State D
ependen...
Mood Congru
ent...
Proce
dural M
em...
0% 0% 0%0%0%
1. Sensory Memories2. Flashbulb Memories3. State Dependent
Memories4. Mood Congruent
Memories5. Procedural
Memories1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23
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Remembering how to solve a jigsaw puzzle without any conscious recollection that one can
do so best illustrates ________ memory.
Flash
bulb
Senso
ry
Implic
it
Explic
it
Semantic
0% 0% 0%0%0%
1. Flashbulb2. Sensory3. Implicit4. Explicit5. Semantic
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23
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The increase in synaptic firing potential that contributes to memory formation is
known as
Explic
it memor..
.
Implic
it memor..
.
Long-t
erm pote
...
Seria
l positi
o...
Infan
tile amne...
0% 0% 0%0%0%
1. Explicit memory2. Implicit memory3. Long-term
potentiation4. Serial position effect5. Infantile amnesia
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23
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Retrieval
Recall• you must retrieve the
information from your memory
• fill-in-the blank or essay tests
Recognition• you must identify the
target from possible targets
• multiple-choice tests
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Recall
• Who is this handsome fellow?
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Recognition
• A. Brad Pitt• B. Gordon Ramsay• C. Ryan Seacrest• D. Mike “The Situation” Sorentino
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Recall
• Who is this sweet-looking girl?
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Recognition
• A. Madonna• B. Katy Perry• C. Jenna Elfman• D. Jennifer Aniston
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Recall
• Who is this?
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Recognition
• A. Jennifer Lopez• B. Eva Longoria• C. Fergie• D. Nicole "Snooki" Polizzi
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Ways to help you retrieve info
• Relearning – learning material for the second time, saves time.– Example: Taking Psych in college should
save you time for going to football games
• Retrieval Cues – anchor points used to access target info for retrieval later – Example: Mnemonics, words, events
places , emotions that trigger memory
• Priming – unconscious activation of associations in memory– Example: See a rabbit and asked to
spell hair, you spell hare
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The Context Matters!!!• Mood Congruent Memory – recalling
memories consistent with current mood– Example: When you break up with your girlfriend
you think about all the other times you’ve been dumped
• State Dependent Memory – learning that takes place in one physiological or situational "state" is generally better remembered later in a similar physiological state or situational state
– Example: info learned when person is drunk is better recalled when person is drunk
• Déjà vu – eerie sense that you’ve experienced something before
– Example: When I saw the play Billy Elliot I had déjà vu …I thought I had seen it before
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Mood-congruent memory refers to the effect of emotional states on the process
of
Repressi
on
Enco
ding
Stora
ge
Retrieval
Relearning
6%
22%
0%
72%
0%
1. Repression2. Encoding3. Storage 4. Retrieval5. Relearning
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23
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The eerie sense of having previously experienced a situation is known as
Implic
it memor..
.
Seria
l positi
o...
Mood co
ngruent..
.
Source
amnesia
Déjà vu
0% 0%
100%
0%0%
1. Implicit memory2. Serial position effect3. Mood congruent
memory4. Source amnesia5. Déjà vu
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Forgetting
• Encoding Failures
• Storage Decay
• Retrieval Failures
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Forgetting• Schacter’s sevens sins of memory
– Sins of Forgetting• Absent-mindedness – encoding failure (inattention to
detail)• Transience – storage decay• Blocking – inaccessibility to stored info
– Sins of distortion• Misattribution – confusing the source• Suggestibility – linger effects of misiformation• Bias – belief colored recollections
– Sin of intrusion• Persistence – unwanted memories
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Encoding Failure
Example – You can’t remember a person’s name that you were just introduced to because you weren’t paying attention
What should you do to prevent an encoding failure?
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Storage DecayEbbinghaus Curve
Apply the Ebbinghaus curve to Psych Class
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Retrieval Failure
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Forgetting• Retroactive Interference: new
information blocks out old information.– Example: Getting a new bus
number and forgetting old bus number.
• Proactive Interference: old information blocks out new information.– Example: Calling your new
girlfriend by old girlfriends name.
• PORN
• Positive Transfer – old info helps you learn new info– Example: learning Spanish helps
you learn French
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Motivated Forgetting• Motivated Forgetting –
revising past memories
• Repression – (Freud’s Psychoanalytic Theory)
• A defense mechanism that banishes painful memories from consciousness to minimize anxiety– Example: Woman with
unexplained fear of running water had repressed a memory of almost drowning
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Constructive Memory• Constructed memory - a
created memory, altered when encoded or retrieved.– Misinformation effect– Imagination effect– Source amnesia
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Constructive Memory• Elizabeth Loftus• Misinformation Effect – incorporating
misleading info into a memoryExample: misrecalling a yield sign as a stop sign
• Imagination Effect/Inflation – imagining nonexistent actions and events can create false memories
Example: imagining that Solon beat Mentor, you may create a false memory (:
• Source Amnesia – retaining the memory of an event, but not the source
Example: Someone told you that Solon beat Mentor, but you think you read it in the newspaper
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Discerning True and False Memories
• Memory studies – real vs. false
• Eye witness testimony
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Children’s Eyewitness Recall
• Children’s memories of abuse–Suggestibility
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Repressed or Constructed Memories of Abuse?
• Areas of agreement– Sexual abuse happens– Injustice happens– Forgetting happens– Recovered memories are incomplete– Memories before 3 years are unreliable– Hypnotic memories are unreliable– Memories can be emotionally upsetting
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Improving Memory Techniques
• Study repeatedly• Make the material meaningful• Activate retrieval cues• Use mnemonic devices• Minimize interference• Sleep more• Test your own knowledge, both to rehearse it
and to help determine what you do not yet know
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The misinformation effect best illustrates the dynamics of
Automatic p
roc..
.
Memory
constr
u...
Repressi
on
Proacti
ve In
te...
Mood-co
ngruent..
.
0% 0% 0%0%0%
1. Automatic processing2. Memory construction3. Repression4. Proactive Interference5. Mood-congruent
memory
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
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As we retrieve memories from our memory bank, we often alter them based on past experiences and our
current expectations. This best illustrates
Proacti
ve in
te...
Infan
tile amne...
Transience
Memory
constr
u...
Repressi
on
0% 0% 0%0%0%
0 of 30
1. Proactive interference
2. Infantile amnesia3. Transience4. Memory
construction5. Repression
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Professor Maslova has so many memories of former students that she has difficulty remembering the
names of new students. The professor's difficulty best illustrates
Retroac
tive in
...
Mood co
ngruent..
.
Proacti
ve in
te...
Spacin
g effect
Source
amnesia
0% 0% 0%0%0%
0 of 30
1. Retroactive interference
2. Mood congruent memory
3. Proactive interference
4. Spacing effect5. Source amnesia
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As a child, Andre dreamed that he was chased and attacked by a ferocious dog. Many years later, he mistakenly recalled that this
had actually happened to him. Andre's false recollection best illustrates
Self-
refere
nce...
Mood co
ngruent..
.
Infan
tile amne...
Repressi
on
Source
amnesia
0% 0% 0%0%0%
1. Self-reference effect2. Mood congruent
memory3. Infantile amnesia4. Repression5. Source amnesia
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21 22 23 24 25 26 27 28 29 30
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An attorney uses misleading questions in an attempt to distort a court witness' recall of a
previously observed crime. This best illustrates
State dependen...
Mood co
ngruent..
.
Misi
nform
ation...
Priming
Infan
tile amne...
0% 0% 0%0%0%
1. State dependent memory
2. Mood congruent memory
3. Misinformation effect
4. Priming5. Infantile amnesia1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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