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The wavelength of visible light determines its


A) relative luminance.
B) amplitude.
C) difference threshold.
D) hue.

E) A) and D)
F) A) and B)

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Imagine closely viewing a red pencil with its sharpened lead tip pointing upward and the eraser at the other end pointing downward.Describe how incoming light reflected by the pencil is focused on the retina,and describe the location of the visual receptor cells that convert the light energy into neural impulses.Describe the pathway by which these neural impulses are forwarded to the optic nerve and on to the brain's visual processing centers,which enable you to perceive an image of a red pencil.

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After corrective eye surgery,adults blind from birth are likely to have the greatest difficulty in visually distinguishing between stimuli that differ in


A) color.
B) brightness.
C) shape.
D) size.

E) B) and C)
F) A) and B)

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A floating ship is to the ocean water as ________ is to ________.


A) closure;continuity
B) brightness constancy;relative height
C) figure;ground
D) proximity;interposition

E) A) and C)
F) A) and B)

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In the historical controversy over the dynamics of perception,________ was to nature as ________ was to nurture.


A) continuity;closure
B) Helmholtz;Hering
C) linear perspective;interposition
D) Kant;Locke

E) All of the above
F) A) and B)

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According to the Young-Helmholtz theory


A) the retina contains three kinds of color receptors.
B) color vision depends on pairs of opposing retinal processes.
C) the size of the difference threshold is proportional to the intensity of the stimulus.
D) certain nerve cells in the brain respond to specific features of a stimulus.

E) A) and B)
F) A) and C)

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The role of feature detector cells in the processing of visual information was first demonstrated by


A) Young and Helmholtz.
B) Hering.
C) Hubel and Wiesel.
D) Gibson and Walk.

E) A) and C)
F) None of the above

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Visually perceiving words as distinct from the surrounding white paper on which they are printed best illustrates


A) retinal disparity.
B) figure-ground perception.
C) the phi phenomenon.
D) perceptual adaptation.

E) All of the above
F) C) and D)

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The distance between our right and left eyes functions to provide us with a cue for depth perception known as


A) proximity.
B) interposition.
C) retinal disparity.
D) linear perspective.

E) B) and C)
F) A) and B)

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The multilayered tissue on the eyeball's sensitive inner surface is called the


A) cornea.
B) pupil.
C) retina.
D) iris.

E) C) and D)
F) B) and D)

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The amount of energy a light wave contains is its


A) wavelength.
B) hue.
C) brightness.
D) intensity.

E) C) and D)
F) A) and B)

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Which of the following is a cue used by artists to convey depth on a flat canvas?


A) proximity
B) continuity
C) interposition
D) closure

E) A) and B)
F) A) and C)

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Under very dim levels of illumination


A) rods reach their maximum light sensitivity more rapidly than do cones.
B) rods are more light sensitive than cones.
C) it is particularly important to look straight at the objects we want to see.
D) all of these statements are true.

E) C) and D)
F) None of the above

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The visual cliff is a laboratory device for testing ________ in infants.


A) size constancy
B) accommodation
C) depth perception
D) perceptual adaptation

E) A) and B)
F) None of the above

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The brightness of a light wave is influenced by its


A) wavelength.
B) hue.
C) frequency.
D) intensity.

E) B) and C)
F) B) and D)

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A genetically sex-linked characteristic accounts for the greater incidence of


A) retinal disparity among females than among males.
B) visual afterimages among males than among females.
C) accommodation among females than among males.
D) color-deficient vision among males than among females.

E) B) and C)
F) A) and D)

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Green light is


A) longer in wavelength than yellow light.
B) shorter in wavelength than blue light.
C) longer in wavelength than orange light.
D) shorter in wavelength than red light.

E) None of the above
F) B) and D)

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If an adult who was blind from birth gains the ability to see,that person would have the greatest difficulty visually distinguishing


A) ice cubes from golf balls.
B) the Sun from the Moon.
C) red from green.
D) a white cloud from the blue sky.

E) All of the above
F) B) and C)

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Julie sees a friend's bright purple car.Compared with the entire range of visible light waves,the car is reflecting relatively ________ frequency and ________ amplitude light waves.


A) high;small
B) high;great
C) low;small
D) low;great

E) A) and B)
F) A) and C)

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People are more likely to perceive a figure and ground illustration as reversible if they are told it is reversible.This best illustrates the importance of


A) interposition.
B) retinal disparity.
C) perceptual adaptation.
D) top-down processing.

E) B) and C)
F) A) and B)

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