Question

1. the goal of psychophysics is

a) to understand how stimuli from the world affect the sensory experience
b) to determine the absolute threshold in sensory perception
c) to study the difference threshold in sensory perception
d) to determine the relations between motivation, sensitivity, and decision making in detecting the presence or absence of a stimulus

1. ___ are created when perceptual cues are distorted so that our brain cannot correctly interpret space, size, and shape.

a) monocular depth
b) binocular depth cues
c) illusions
d) subliminal messages

1. the four primary sensory experiences that make up taste are

a) sour, salty, bitter, and sweet.
b) warm, cold, spicy, and bland.
c) salty, sweet, hot, and cold.
d) sweet, spicy, hot, and sour.

1. which of the following monocular depth cues explains why objects appear to move when you move your head from side to side?

a) interposition
b) motion parallax
c) texture - density gradient
d) relative motion

1. which of the following statements about the sense of taste is not true?

a) what people taste is greatly affected by their sense of smell.
b) taste receptors are the only receptors sensitive to chemical molecules.
c) taste is affected by the sensations of warmth, cold and pressure.
d) taste is composed of four primary sensory experiences - sour, salty, bitter, and sweet.

1. which of the following statements is true?

a) color deficiency affects more women than men.
b) color deficiency is due to a problem with the optic nerve.
c) color deficiency occurs when a persons rods do not function properly.
d) color deficiency affects more men than women.

Explanation:

• Question 29: Signal detection theory examines the relation between motivation, sensitivity, and decision - making in detecting the presence or absence of a stimulus.
• Question 30: Illusions are created when perceptual cues are distorted. Monocular and binocular depth cues are types of cues for depth perception, and subliminal messages are stimuli below the threshold of conscious awareness.
• Question 31: The four primary taste sensations are sour, salty, bitter, and sweet.
• Question 32: Motion parallax (a monocular depth cue) explains why objects appear to move when the head moves. Interposition is about one object blocking another, texture - density gradient is about texture changes with distance, and relative motion is a more general term.
• Question 33: Taste receptors are not the only receptors sensitive to chemical molecules (e.g., olfactory receptors also are). The other statements about taste are more accurate.
• Question 34: Color deficiency affects more men than women. It is due to a problem with cones (not rods or the optic nerve in most cases).

Answer:

1. d
2. c
3. a
4. b
5. b
6. d