Question 1

What physical feature of the human eye lends important support to the trichromatic theory of color vision?

Accepted Answer

A)  the optic nerve
B)  the various types of cones in the retina
C)  the lens
D)  the muscles that control the pupil

Question 2

What does it mean to say that color is a quality and not an amount? Explain how the term hue relates to this statement.

Accepted Answer

To say that color is a quality and not a...

Question 3

Cone monochromats ______.

Accepted Answer

A)  have rods but no cones
B)  lack two cone types but have one present
C)  are color-deficient because of damage to V4
D)  are functionally equivalent to rod monochromats

Question 4

Describe the trichromatic theory of color vision, and list the evidence that supports it.

Accepted Answer

The trichromatic theory proposes that co...

Question 5

Blue objects absorb most wavelengths but reflect light at about 450 nm.This phenomenon relates to ______.

Accepted Answer

A)  spectral reflectance
B)  resonance properties
C)  color spectrometry
D)  specter of bond

Question 6

As we age, we tend to lose our ability to see long wavelengths, but we do not lose our ability to see short wavelengths.

Accepted Answer

A) True 
 B)False

Question 7

An object that reflects all light of all wavelengths from its surface will be perceived as ______.

Accepted Answer

A)  red
B)  blue
C)  black
D)  white

Question 8

Why is the term color deficiency a more accurate label than is the term color blindness?

Accepted Answer

The term color blindness implies that so...

Question 9

Spectral reflectance is the ratio of light reflected by an object at each wavelength.

Accepted Answer

A) True 
 B)False

Question 10

If an object is reflecting 50% of the light that hits it, it will be seen as ______ with 100 units of light illuminating it and as ______ with 1000 units of light illuminating it.

Accepted Answer

A)  black; white
B)  white; white
C)  gray; gray
D)  gray; white

Question 11

A metamer is a psychophysical color contrast between two patches of light that have identical sets of wavelengths but are perceived as different colors due to their surroundings.

Accepted Answer

A) True 
 B)False

Question 12

The distribution of wavelengths in sunlight changes across the day.Evening light has more long-wavelength light than light earlier in the day.This means ______.

Accepted Answer

A)  we see objects as bluer in the evening
B)  color constancy must correct for the change in the distribution of light
C)  object permanence is compromised
D)  cortical achromatopsia will develop in those who do not rise early each morning

Question 13

Define color constancy, and give an example that demonstrates the concept.

Accepted Answer

Color constancy refers to our ability to...

Question 14

Hurvich and Jameson (1957)  developed an experiment in which observers cancel out the perception of a particular color by adding light of the opponent color.This procedure is known as ______.

Accepted Answer

A)  afterimage detection
B)  hue cancellation
C)  simultaneous color contrast
D)  spectral reflectance

Question 15

That the perceived lightness of an object is explained by the ratio of light it reflects rather than the absolute amount of light it reflects, assuming even illumination across the visual scene, is known as the ______.

Accepted Answer

A)  Gelb effect
B)  lightness ratio
C)  color-lightness invariance
D)  ratio principle

Question 16

Unilateral dichromacy has allowed scientists to determine ______.

Accepted Answer

A)  whether color deficiency occurs equally in women and men
B)  if people with four cone types in their retinae see more colors than normal individuals
C)  what colors appear like to color-deficient individuals
D)  what mutation causes four-cone systems

Question 17

Which of the following is TRUE about rod monochromats?

Accepted Answer

A)  They cannot distinguish between red and green.
B)  They see best in bright sunlight.
C)  They cannot learn to read.
D)  They see the world only in black, white, and grays.

Question 18

Explain how and why color perception can change as adults age.

Accepted Answer

As adults age, the lenses of their eyes ...

Question 19

The S-cone has its name because it ______.

Accepted Answer

A)  is more sensitive to all light than other cones
B)  responds best to short-wavelength light
C)  works on subtractive color mixing
D)  shifts between responding to low and high brightness

Question 20

A green square surrounded by red looks more green than if surrounded by a neutral color.Similarly, a yellow square looks more yellow when surrounded by a blue background than a neutral background.These phenomena support which view of color perception?

Accepted Answer

A)  competitive theory of color vision
B)  trichromatic theory of color vision
C)  complementary theory of color vision
D)  opponent-process theory of color vision

Exam 6: Color Perception

Which of the following is TRUE about rod monochromats?

Correct AnswerverifiedShow Answer

What physical feature of the human eye lends important support to the trichromatic theory of color vision?

Correct AnswerverifiedShow Answer

What does it mean to say that color is a quality and not an amount? Explain how the term hue relates to this statement.

Correct AnswerverifiedTo say that color is a quality and not a...View AnswerShow Answer

As we age, we tend to lose our ability to see long wavelengths, but we do not lose our ability to see short wavelengths.

Correct AnswerverifiedShow Answer

Describe the trichromatic theory of color vision, and list the evidence that supports it.

Correct AnswerverifiedThe trichromatic theory proposes that co...View AnswerShow Answer

Hurvich and Jameson (1957) developed an experiment in which observers cancel out the perception of a particular color by adding light of the opponent color.This procedure is known as ______.

Correct AnswerverifiedShow Answer

An object that reflects all light of all wavelengths from its surface will be perceived as ______.

Correct AnswerverifiedShow Answer

The S-cone has its name because it ______.

Correct AnswerverifiedShow Answer

A green square surrounded by red looks more green than if surrounded by a neutral color.Similarly, a yellow square looks more yellow when surrounded by a blue background than a neutral background.These phenomena support which view of color perception?

Correct AnswerverifiedShow Answer

Unilateral dichromacy has allowed scientists to determine ______.

Correct AnswerverifiedShow Answer

Why is the term color deficiency a more accurate label than is the term color blindness?

Correct AnswerverifiedThe term color blindness implies that so...View AnswerShow Answer

Spectral reflectance is the ratio of light reflected by an object at each wavelength.

Correct AnswerverifiedShow Answer

That the perceived lightness of an object is explained by the ratio of light it reflects rather than the absolute amount of light it reflects, assuming even illumination across the visual scene, is known as the ______.

Correct AnswerverifiedShow Answer

A metamer is a psychophysical color contrast between two patches of light that have identical sets of wavelengths but are perceived as different colors due to their surroundings.

Correct AnswerverifiedShow Answer

Blue objects absorb most wavelengths but reflect light at about 450 nm.This phenomenon relates to ______.

Correct AnswerverifiedShow Answer

Cone monochromats ______.

Correct AnswerverifiedShow Answer

Explain how and why color perception can change as adults age.

Correct AnswerverifiedAs adults age, the lenses of their eyes ...View AnswerShow Answer

The distribution of wavelengths in sunlight changes across the day.Evening light has more long-wavelength light than light earlier in the day.This means ______.

Correct AnswerverifiedShow Answer

If an object is reflecting 50% of the light that hits it, it will be seen as ______ with 100 units of light illuminating it and as ______ with 1000 units of light illuminating it.

Correct AnswerverifiedShow Answer

Define color constancy, and give an example that demonstrates the concept.

Correct AnswerverifiedColor constancy refers to our ability to...View AnswerShow Answer

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To say that color is a quality and not a...
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The trichromatic theory proposes that co...
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The term color blindness implies that so...
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As adults age, the lenses of their eyes ...
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If an object is reflecting 50% of the light that hits it, it will be seen as with 100 units of light illuminating it and as with 1000 units of light illuminating it.

Correct Answer
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Correct Answer
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Color constancy refers to our ability to...
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