psy 368 human memory imagery & mnemonics. imagery effects theories cases of superior memory ways...
TRANSCRIPT
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PSY 368 Human Memory
Imagery &Mnemonics
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• Imagery • Effects• Theories
• Cases of superior memory
• Ways to improve you memory
Brief outline for week
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Demo: Remembering a shopping list
Route➟ Classroom➟ Out by elevators➟ In elevator➟ DeGarmo lobby➟ Plaza ➟ Quad➟ Bridge over College
Ave➟ Area outside of
Milner➟ Bone Student Center➟ Student Bookstore
• Bizarre image➠ Dr. Cutting milking a cow in
the classroom
➠ Cptn’ Crunch sword fighting with Tony the Tiger
➠ Three people roasting hotdogs over camp fire
➠ Flood of pickle juice and floating pickles, have to step on pickles to get out
➠ Etc. The more bizarre and vivid the image, the better. Add sounds and smells to your images
• Milk• Cereal• Hot dogs• Pickles• Mustard• Orange
juice• Sponges• Toilet
paper• Light
bulbs• Cookies
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• A lot of the mnemonic techniques have an imagery aspect to them, so we will start with a discussion of imagery and memory
Imagery
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Historical Overview
• Three Ages of Mental Imagery: • The Philosophic Period• Mental images were taken to be the main factor in the
makeup of the mind. Images were also sometimes believed to be the elements of thought.
• The Measurement Period • Galton (1880), gave a questionnaire to 100 people
asking them to remember their breakfast table and answer some questions about the images that they had. Created a measure of imagery that was related to sex, age, and other differences specific to individuals, but learned little else. With behaviorism, this died out.
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Historical Overview
• Three Ages of Mental Imagery: • The Cognitive and Neurocognitive Period• Imagery studies and research was reborn in the late
1960s on two ideals. • The first was proposed by Sheehan and Neisser (1969). It
dealt with the quantitative assessment of imagery. (see also Neisser & Kerr, 1973).
• The second advance for imagery involved the incorporation of the concept into a cognitive model where the internal representation of information was a central element.
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Imagery
• What is a mental image?• Is the mental representation of things that are not
currently being sensed by the sense organs• How is it like reality, how is it different?
• Hard to study, not directly observable and fade away quickly.
• Does an image use the same neural hardware as experience?
• Spatial ability is independent of verbal ability. We can test it using methods similar to operation span or digit span.
• Example of test: • Cube folding: Will the arrows
touch if you fold these into cubes?
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Imagery and Memory Effects
• Mental rotation tasks• Picture superiority effect• Image scanning effect• Bizarreness effect• Concreteness Effect
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Imagery and Memory Effects
• Mental rotation tasks• Mental rotation tasks suggest that
you use images in working memory in an analog way.
• Shepard and Metzler (1972): Rotate images, look at response time.
A: “Same” rotated in picture plane.B: “Same” rotated in depth.C: Different.
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Imagery and Memory Effects
• Picture superiority effect
• Shepard (1967): • Present 612 pictures or words with a recognition
test. After 2 hours approximately 100% accuracy for pictures, 88% for words. After a week about 88% for both.
• Standing (1977): • Learn 1,000 words, 1,000 simple pictures, or
1,000 bizarre pictures. After 2 days recognition memory was 61.5% for words, 77% for pictures, and 88% for bizarre pictures.
• Summation: Memory for pictures is better than memory for words, especially early on.
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Imagery and Memory Effects
• Image scanning effect
• Paivio (1978)• For example, imagine these times on an analog
clock face. Which of each pair has a bigger angle between the hands?• 4:10 and 9:23
• 3:20 and 7:25
• 2:45 and 1:05
• 3:15 and 5:30
• Results• Reaction times
related to angular distance, smaller angle = larger RT
• P’s who were high imagers were overall faster than low imagers
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Imagery and Memory Effects
• Image scanning effect
• Scanning tasks show that the farther apart two things are on an image, the longer it takes to mentally scan from one to the other (e.g., Kosslyn, Ball, & Reiser, 1978).
• Memorize this map…• There’s a hut, a tree, a
rock, a lake, a well, sand, and grass.
• Hear the name of an object, then another. Imagine a black dot zipping from one to the other on the shortest path.
• Push a button when it gets there.
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Imagery and Memory Effects
• Image scanning effect
• Scanning tasks show that the farther apart two things are on an image, the longer it takes to mentally scan from one to the other (e.g., Kosslyn, Ball, & Reiser, 1978).
• Time to scan between all pairs of locations on imaged map
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Imagery and Memory Effects
• Bizarreness effect• Better memory for bizarre images• McDaniel & Einstein (1986)• Presented participants with sentences w/ underlined
word triplets, within either bizarre or common sentence contexts (10 sets)
• Bizarre: The dog rode the bicycle down the street
• Common: The dog chased the bicycle down the street.
• Instructions: Form an mental image that included the underlined words, and rate the vividness of the image
• Following a 30 sec distractor task they were asked to recall the underlined words
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Imagery and Memory Effects
• Bizarreness effect
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Imagery and Memory Effects
• Concreteness Effect• Read list of words
• Dollar • Cabin • Storm • Arrow • River • Book • Peach
• Justice• Franchise• Session• Incident• Hope• Cost• Mood
• Typically better recall for the concrete items
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Imagery
• Images could be:• Analog representations:• Pictures in the head: Images are what they feel
like, a picture in the head whose properties are like the properties of the real thing
• Perceptual processing: Images use the same perceptual hardware you use to see
• Propositions: It’s essentially a verbal/symbolic thing. The feeling that you have an image is epiphenomenal, there isn’t really an image
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Three Theories of Imagery
1. Functional-Equivalency hypothesis• Analog representations. Something like
pictures, but not exactly the same
2. Conceptual-Propositional Hypothesis• No images, propositional representation
3. Paivio’s Dual-Coding Hypothesis• Perhaps both image and verbal
(propositional?) representations for some things
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Three Theories of Imagery
1. Functional-Equivalency hypothesis• Shepard and Kosslyn (e.g., Cooper & Shepard,
1978; Kosslyn & Pomerantz, 1977)• States that imagery and perception are
extremely similar. • Shepard and Kosslyn introduced mental rotation of
visual stimuli in memory.
• Relationship between time required for a specific mental rotation and the actual degrees of rotation
• Visual images reflect internal representations that operate in a way that is analogous to the functioning of the perception of physical objects
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Three Theories of Imagery
• Images use the same perceptual hardware you use to see.
• Estes, Verges, & Barsalou (2008)• Reading words should lead to mental simulations of
the words, using perceptual hardware.• Part of this simulation is location.• Trial:• Prime: Cowboy• Word: hat (upper location) or boot (lower location)• Target: Letter (X or O at top or bottom of the screen)
• If you simulate the location, then hat should interfere with letters at the top (you’re using that perceptual hardware). Boot would be opposite.
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Three Theories of Imagery
• Images use the same perceptual hardware you use to see.
• Estes, Verges, & Barsalou (2008)• Reading words should lead to mental simulations of
the words, using perceptual hardware.
• Results• Letters in objects’ typical locations took longer to
identify.
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Three Theories of Imagery
• Images use the same perceptual hardware you use to see.
• Zwaan & Yaxley (2003)• Spatial iconicity effects also suggest that location is
part of the representation of words and that location simulation is part of comprehension.
• Present a pair of words, are they related?• Attic• Basement
• Or• Basement• Attic
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Three Theories of Imagery
• Images use the same perceptual hardware you use to see.
• Zwaan & Yaxley (2003)
• When vertical arrangements were correct, participants were faster than when they were incorrect.
• Again, location seems to be part of the understanding of a word.
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Imagery
• But, pictures support processing that images don’t.• For example, it’s harder to decompose an image
than it is to decompose a picture. (based on Reed, 1974)
• Get a clear mental image of the picture below:
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Imagery
• But, pictures support processing that images don’t.• For example, it’s harder to decompose an image
than it is to decompose a picture. (based on Reed, 1974)
• Are the following shapes in the picture you just saw?
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Imagery
• But, pictures support processing that images don’t.• For example, it’s harder to decompose an image
than it is to decompose a picture. (based on Reed, 1974)
• Are the following shapes in the picture you just saw?
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Imagery
• But, pictures support processing that images don’t.• For example, you can reverse pictures, but most
people report that reversing images is very hard (relative to with a picture).
• Chambers & Reisberg (1985)• Look at ambiguous figure, provide interpretation
• Imagine the figure, provide a second interpretation, very hard to do
• Draw image from memory, then give second interpretation, could do it
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Three Theories of Imagery
2. Conceptual-Propositional Hypothesis• Anderson and Bower (e.g., Anderson, 1978,
Bower, 1972, Pylyshyn, 1973) • Memory is not like a photograph• We store propositional interpretations of events,
whether they be verbal or visual, rather than the imagery components. • Anderson and Bower explain that concrete concepts
are coded by a rich set of predicates that bind concepts together. ..."the only difference between the internal representation for a linguistic input and a memory image is detail of information”
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Theories of Imagery
• Images could be:• Propositions: Essentially a verbal/symbolic
thing. The feeling that you have an image is epiphenomenal, there isn’t really an image.
You saw You heard
“The goal keeper missed the ball”
Same underlying propositional representations:
• missed(goalkeeper, ball)Image may provide even richer information:
• wept(goalkeeper)
• cursed(goalkeeper)
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Three Theories of Imagery
Comparing Analog and Propositional codesAnalog Code•Picture-like code
•Images like perceptions, retain some sensory qualities
•Relations represented implicitly
•Simultaneous
•Different representations for each sense
Propositional Code•Word-like code
•Images are descriptions of visual scenes
•Relations represented explicitly
•Sequential
•Same representations for each sense
Anderson (1978): concluded that “it may not be possible to decide between imaginal and propositional representations strictly on the basis of behavioral data.”
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Three Theories of Imagery
3. Paivio’s Dual-Coding Hypothesis• Proposed that words and images are processed
separately (based on patients with temporal lobe damage who could not process images).
• The basic tenant of this theory is that information is mentally represented either in a verbal system or a nonverbal (analog) system (or both).• Each system contains different kinds of information.
• Each concept is connected to other related concepts in the same system and the other system.
• Activating any one concept also leads to activation of closely related concepts.
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Three Theories of Imagery
3. Paivio’s Dual-Coding Hypothesis• Explains many of the imagery effects• Concreteness effect• Verbal and visual (image) codes for concrete items
• Picture superiority effect• Pictures automatically coded two ways, as and image and
as a verbal description
• Imagery instructions
• Schnorr & Atkinson, (1969)
• Studied pairs of associates using two instructions• Imagery instructions – 80%
• Rote rehearsal - 40%
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Three Theories of Imagery
3. Paivio’s Dual-Coding Hypothesis• Explains many of the imagery effects• Symbolic distance effect – it is easier to make judgments
about items that are farther apart on a dimension than it is to make judgments about items that are close on a dimension. • true or false:
• The fly is bigger than the flea.• The horse is bigger than the
mouse.• The rabbit is bigger than the
dog.• The mouse is bigger than the
fly.• The dog is bigger than the
horse.
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Three Theories of Imagery
3. Paivio’s Dual-Coding Hypothesis• Explains many of the imagery effects• Symbolic distance effect – it is easier to make judgments
about items that are farther apart on a dimension than it is to make judgments about items that are close on a dimension. • Picture symbolic distance effect tasks are easier than
verbal symbolic distance effect tasks (pictures access the system directly, verbal has to be recoded).
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Three Theories of Imagery
3. Paivio’s Dual-Coding Hypothesis• Can using dual coding ever interfere with/disrupt memory?• Segal (1971): imagery tasks can interfere with visual perception• Brooks (1967): perceptual tasks can interfere with imagery• Try imaging President Lincoln’s face and read the text given below.
Imagery involves one or more of your five senses, hearing, taste, touch, smell, sight. An author uses a word or phrase to stimulate your memory of those senses. These memories can be positive or negative which will contribute to the mood of your poem…
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Three Theories of Imagery
3. Paivio’s Dual-Coding Hypothesis• Can using dual coding ever interfere with/disrupt
memory?• Schooler & Engstrom-Schooler (1990)• P's are shown a videotaped robbery. (This creates a visual
memory.)
• P's then either:
1) Are asked to imagine the robber.
2) Are asked to describe the robber.
3) Are asked to do a series of math problems. (control)
• P's complete a recognition memory test picking the robber out of a lineup of eight persons.
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Three Theories of Imagery
3. Paivio’s Dual-Coding Hypothesis• Can using dual coding ever interfere with/disrupt memory?• Schooler & Engstrom-Schooler (1990)
• Results: Creating two codes can disrupt memory for information that is only represented in one code.
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• Okay, recall the shopping list. Run through the route from here to the bookstore in Bone. • List
Demo: Remembering a shopping list
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• Eidetic imagery
• The Mind of a Mnemonist, Luria (1968, 1987)
• Flashbulb memories
Special Abilities
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• Eidetic imagery = Photographic memory• Criteria strict for classification - image =
photograph• Eidetic images have more detail than normal and
last longer than iconic memory.• Frequency of occurrence • Mostly in preadolescent children • Rare in adults - not well-studied
Special Abilities
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• The Mind of a Mnemonist, Luria (1968, 1987)• ‘S’ (Solomon Shereshevsky, Russian journalist 7
mnemonist)• Average IQ• Could recall speeches verbatim• Memorize complex mathematical equations and matrices• Memorize text and poems, even in foreign language• Diagnosed as having severe Synesthesia • Musical tones were colors, touch were tastes• Thinking about numbers: • “take the number 1. This is a proud, well-built man; 2 is a high-spirited
woman; 3 a gloomy person; 6 a man with a swollen foot; 7 a man with a moustache; 8 a very stout woman—a sack within a sack. As for the number 87, what I see is a fat woman and a man twirling his moustache”
Special Abilities
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• The Mind of a Mnemonist, Luria (1968, 1987)• Synesthesia is a condition where sensations
usually experienced in a single modality are experienced in two modalities. • This condition give psychologists some very
interesting data and research. • Some examples of synesthesia are receiving an
auditory signal or sensation in a visual modality, where it obviously shouldn’t be.
• Synesthesia is rule governed, not random. • For example, there is a positive relationship between
increasing the pitch of a sound and increased brightness.
Special Abilities
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• Flashbulb memories• Very vivid memories• Personally relevant – emotion• Difficult to study• Neisser and Harsch (1992) study• Where you were on Sept. 11
• Challenger explosion in 1986 - asked people day later about where they were, etc.
• After 3 years they were inaccurate at remembering these things, but very confident they were accurate
• No evidence they are different from normal memories.
Special Abilities