Optical Illusions - Psychologyrusk-psychology.weebly.com/uploads/4/8/8/2/48824505/...• As a large...
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Optical IllusionsRusk• Psychology
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Perception
Size constancy: ability to remember the size of an object no matter where it is located
Color constancy: ability to perceive an object as the same color regardless of the environment
Shape constancy: ability to perceive an object as having the same shape regardless of the angle
Space constancy: ability to judge distance by perceiving either self or object movement
Perceptual constancies use memory to maintain order in the world.
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Perceptual Organization
Gestalt: making incomplete organization whole (they way something should be rather than how it actually is)
Similarity: grouping like things together
Proximity: grouping things together that are near each other
Closure: filling in the missing details
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Principles of Organization
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Closure Proximity
Similarity
Perceptual Organization
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Perceptual Illusions
Franz Müller-Lyer designed this illusion in 1889.
Illusions are misperceptions. They illustrate how we organize objects into meaningful perceptions .
Which line is longer?
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Muller-Lyer Illusion at Work
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The Vertical-Horizontal Illusion
Are the two lines the same length?
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In the figure-ground illusion, the figure is in the front while the ground is in the back. Do you see the faces facing one another or do you see the vase?
Figure-Ground Illusion
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Click the forward arrow to move the cylinder on the right forward to the middle cylinder.
Which cylinder is largest?
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Which cylinder is largest?
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Which cylinder is largest?
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For the next Illusion, pair up and have one partner write down the words as the other partner says them.
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This picture is ambiguous in three ways:
• As a small cube in front of a larger cube; • As a large cube with a corner cubelet cut
out; • As a small cube inside three
perpendicular adjoining planes.
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Stare at the central dot, and move your head forwards and backwards.
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