Question 1

After gazing at an angry face,you immediately turn to look at a morphed blend of an angry and a scared face.The face appears scared to you.This best illustrates the impact of

Accepted Answer

This phenomenon is an example of sensory adaptation, as the visual system has become desensitized to the perception of anger and is more likely to perceive the subsequent morphed face as scared. Weber's law refers to the principle that the just noticeable difference between two stimuli is based on a proportion of the original stimulus. Subliminal sensation refers to the perception of stimuli below the threshold of conscious awareness. Prosopagnosia is a neurological disorder characterized by an inability to recognize faces.

Question 2

A perceptual set refers to

Accepted Answer

A perceptual set is a mental predisposition that influences what we perceive, based on our expectations, experiences, and context. It can lead us to interpret ambiguous stimuli in a particular way or to notice certain features more than others.

Question 3

After learning that her new college roommate had experienced several depressive episodes during her high school years,Erin incorrectly perceived her roommate's laughter as artificial and phony.This best illustrates the impact of

Accepted Answer

Perceptual set refers to a mental predisposition to perceive one thing and not another. Erin's prior knowledge of her roommate's depressive episodes likely created a perceptual set that caused her to interpret her roommate's laughter as phony.

Question 4

Sensory adaptation refers to

Accepted Answer

Sensory adaptation refers to the phenomenon in which we become less sensitive to an unchanging stimulus over time. This allows our sensory systems to prioritize new or changing stimuli that may be more important for survival or understanding our environment.

Question 5

Priming refers to the activation of certain

Accepted Answer

Priming refers to the activation of associations in our memory, which can affect our perception or behavior. Priming can occur unconsciously, and can be influenced by various factors such as prior experience or context.

Question 6

After hearing rumors about the outbreak of an infectious disease,Alyosha began to perceive his normal aches and pains as disease-related symptoms.His reaction best illustrates the impact of

Accepted Answer

Alyosha's perception of his aches and pains as disease-related symptoms is an example of perceptual set, which refers to the tendency to perceive things in a certain way based on our expectations, experiences, and context. In this case, Alyosha's expectation of the disease outbreak influenced how he interpreted his bodily sensations. The other options (difference thresholds, sensory adaptation, subliminal stimulation) do not seem to be relevant to this scenario.

Question 7

The principle that two stimuli must differ by a constant minimum proportion for their difference to be perceived is known as

Accepted Answer

Weber's law states that there must be a constant minimum proportion between two stimuli for their difference to be perceived. This proportion is known as the Weber fraction and varies depending on the sense being used. The other answer choices (opponent-process theory, feature detection, and sensory adaptation) are related concepts in perception but do not directly address the principle described in the question.

Question 8

Tyler formed a positive first impression of a new teacher because her facial expressions triggered memories of his favorite aunt.This best illustrates the impact of

Accepted Answer

Priming refers to the activation of certain associations, predisposing one's perception, memory or response. In this case, Tyler's positive first impression of his new teacher was influenced by the activation of positive associations from memories of his favorite aunt triggered by her facial expressions.

Question 9

Under certain conditions,people are affected by stimuli so weak that they fail to consciously notice them.This is best illustrated by experiments involving

Accepted Answer

Subliminal priming involves presenting stimuli below the threshold of conscious awareness in order to influence subsequent thoughts or behaviors. This is a clear example of people being affected by stimuli too weak to consciously notice them. Sensory adaptation refers to a decreased sensitivity to a constant or unchanging stimulus, perceptual set refers to the influence of expectations and prior experiences on perception, and prosopagnosia is a neurological disorder resulting in the inability to recognize faces. None of these concepts directly relate to being affected by weak stimuli below the threshold of awareness.

Question 10

In an experiment,researchers expose participants to subliminal recordings designed to boost their self-esteem.Based on existing research,you would be correct in predicting that the recordings will

Accepted Answer

Existing research has found little to no evidence that subliminal recordings have any significant impact on self-esteem or mood states. Many studies have shown that any reported benefits from subliminal recordings may be due to a placebo effect or simply people expecting to feel better after listening to them.

Question 11

Jennifer can tune her guitar more effectively than Maria because Jennifer is better at detecting whether specific strings are playing too sharp or too flat.With respect to tone sensitivity,Maria apparently has a ________ threshold than does Jennifer.

Accepted Answer

The answer of Jennifer can tune her guitar more effectively...

Question 12

The tendency to perceive a moving light in the night sky as belonging to an airplane rather than a meteor best illustrates the impact of

Accepted Answer

Perceptual set refers to the tendency to perceive and interpret sensory information in a particular way based on our expectations, past experiences, culture, and context. In this case, our perceptual set biases us to interpret the moving light in the night sky as an airplane rather than a meteor because we are more familiar with airplanes and they are more common in our environment.

Question 13

The minimum difference between two stimuli required for detection 50 percent of the time is called

Accepted Answer

The minimum difference between two stimuli required for detection 50 percent of the time is called the just noticeable difference, which is also known as the difference threshold. The absolute threshold refers to the minimum amount or intensity of a stimulus required for it to be detected. Retinal disparity is a binocular cue for depth perception, and perceptual set refers to the influence of expectations or context on perception.

Question 14

The constant quivering movements of our eyes enable us to

Accepted Answer

The constant quivering movements of our eyes, known as microsaccades, help to minimize sensory adaptation by constantly refreshing the image on the retina, preventing our vision from fading or becoming less sensitive to stationary objects.

Question 15

People's response to subliminal priming indicates that

Accepted Answer

People's response to subliminal priming suggests that they are capable of processing information without any conscious awareness of doing so. This means that their unconscious mind is able to perceive and respond to stimuli that they are not consciously aware of.

Question 16

When researchers added a few drops of vinegar to a brand-name beer,the beer tasters disliked it only if they had been told they were drinking vinegar-laced beer.This best illustrates the impact of

Accepted Answer

Perceptual set refers to a mental predisposition to perceive one thing and not another. In this case, the tasters' expectation that the beer tasted like vinegar influenced their perception of the taste of the beer, demonstrating the impact of perceptual set. Sensory adaptation refers to a decrease in sensitivity to a constant stimulus over time, prosopagnosia refers to difficulty recognizing faces, and subliminal stimulation refers to the presentation of stimuli below the threshold of conscious awareness, none of which apply to this scenario.

Question 17

Giulio's bag of marbles is twice as heavy as Jim's.If it takes five extra marbles to make Jim's bag feel heavier,it will take 10 extra marbles to make Giulio's bag feel heavier.This best illustrates

Accepted Answer

This scenario best illustrates Weber's law, which states that the just noticeable difference between two stimuli is proportional to the magnitude of the stimuli. In this case, the extra "weight" or number of marbles needed to make Jim's bag feel heavier is proportionally less than the extra weight or marbles needed for Giulio's bag because Giulio's bag is twice as heavy to begin with.

Question 18

Which of the following strategies best illustrates the use of subliminal stimulation?

Accepted Answer

Subliminal stimulation refers to any sensory stimuli that are below an individual's threshold for conscious perception. The imperceptible verbal warning against shoplifting in the musical soundtrack is an example of subliminal stimulation because it is presented below the threshold of conscious awareness. The other three options do not involve subliminal stimulation, as they are all at least partially detectable by the individual's conscious awareness.

Question 19

Photographs of people are rated more positively if they are presented immediately after a subliminally flashed image of kittens.This best illustrates the impact of

Accepted Answer

The scenario described relates to priming, which is the subconscious activation of certain associations, predisposing one's perception, memory, or response. In this case, the subliminal flash of kittens primes the person to have a more positive view of the subsequent photograph of people. This suggests that the processing of the image of the kittens has had an impact on how the person perceives the subsequent image of people.

Question 20

After listening to your high-volume car stereo for 15 minutes,you fail to realize how loudly the music is blasting.This best illustrates

Accepted Answer

Sensory adaptation refers to the process by which our sensory receptors and nervous system decrease their response to a constant or unchanging stimuli. In this scenario, after listening to the high-volume car stereo for 15 minutes, our ears adapt to the constant sound and we may no longer notice how loud it is.

Quiz 5: Sensation and Perception