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Psychology chapter 6
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Psychology
Undergraduate 1
11/28/2007

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Term
binocular cues
Definition
depth cues that depend on the use of two eyes.

retinal disparity: comparing the differences in the images from the two eyeballs. the greater the disparity(difference) between the two images, the closer the object.

convergence: the extent to which the eyes converge inward when looking at an object. the greater the strain, the closer the object.
Term
monocular cues
Definition
depth cues available to either eye alone.

relative size: smaller objects appear to be more distant

interposition: if one object partially blocks our view of another, we perceive it as closer.

relative clarity: because light from distant objects passes through more atmosphere, we perceive hazy objects as farther away than sharp, clear objects.

texture gradient: a gradual change from a coarse, distinct texture to a fine, indistinct texture signals increasing distance. distant objects appear to be smaller and more densely packed.

relative height: higher objects appear farther away. think buildings against a sky backdrop.

relative motion(motion parallax): when you are in motion, closer objects seem to move faster.

linear perspective: the more parallel lines converge, the more distant they appear to be.

light and shadow: dimmer objects appear to be more distant because nearby objects reflect more light to our eyes.
Term
selective attention
Definition
the focusing of conscious awareness on a particular stimulus, as in the cocktail party effect.
Term
inattentional blindness
Definition
failing to see visible objects when our attention is directed elsewhere.
Term
phi phenomenon
Definition
an illusion of movement created when two or more adjacent lights blink on and off in quick succession
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