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1. | The goal of psychophysics is ____.
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| a) to understand how stimuli from the world affect the sensory experience
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| b) to determine the absolute threshold in sensory perception
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| c) to determine the difference threshold in sensory perception
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| d) to study the relations between motivation, sensitivity, and decision making in detecting the presence or absence of a stimulus
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2. | The absolute threshold indicates ____.
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| a) the minimum amount of difference a person can detect between two stimuli
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| b) the smallest increase or decrease in the intensity of a stimulus that a person is able to detect
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| c) the weakest amount of a of stimulus required to produce a response
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| d) that the stimulus must be detected in the presence of competing stimuli
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3. | Weber's law states that the ____ the stimulus, the larger the change required for a person to notice that anything has happened to it.
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| a) smaller
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| b) weaker
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| c) larger
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| d) brighter
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4. | The signal-detection theory proposes all the following notions EXCEPT ____.
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| a) a stimulus, or signal, must be detected in the presence of competing stimuli
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| b) a signal may be difficult to detect due to competing stimuli
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| c) sensory adaptation allows us to notice differences in sensations and react to changing stimuli
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| d) the absolute threshold is the amount of a stimulus required to produce a response 50 percent of the time
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5. | The sensation of kinesthesis comes from receptors in and near the ____, and helps to maintain posture and balance.
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| a) ear
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| b) muscles, tendons, and joints
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| c) brain
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| d) eyes
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6. | Which of the following statements about the sense of taste is NOT TRUE?
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| a) Taste receptors are the only receptors sensitive to chemical molecules.
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| b) What people taste is greatly affected by their sense of smell.
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| c) Taste is affected by the sensations of warmth, cold and pressure.
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| d) Taste is composed of four primary sensory experiences -sour, salty, bitter, and sweet.
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7. | Receptors in the skin provide the brain with information regarding each of the following EXCEPT ____.
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| a) warmth
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| b) pain
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| c) pressure
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| d) light
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8. | When you distinguish an airplane from the sky in which it's flying, you are using ____ perception.
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| a) perceptual inference
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| b) figure-ground
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| c) Gestalt
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| d) learned
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9. | Which of the following statements about perception is TRUE?
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| a) Our perceptual set is the collection of beliefs, expectations, and needs that affect what we perceive.
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| b) Until children are about 12 months old, depth perception is generally undeveloped.
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| c) Babies as young as one month old can recognize different faces.
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| d) Perceptual inference is an innate ability, independent of learning.
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10. | ____ are created when perceptual cues are distorted so that our brain cannot correctly interpret space, size, and depth cues.
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| a) monocular depth cues
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| b) binocular depth cues
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| c) illusions
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| d) subliminal messages
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