Question 1

People with tactile agnosia have difficulty identifying objects by touching them.

Accepted Answer

Tactile agnosia, also known as astereognosis, is a condition where individuals have difficulty recognizing objects by touch or tactile stimulation despite having intact sensation. This can occur due to damage or impairment in the somatosensory cortex of the brain.

Question 2

There are three basic types of cones in the retina, each of which responds maximally to a different wavelength.

Accepted Answer

This statement is true. There are three types of cones in the retina, which are responsible for color vision, and each type responds maximally to a different range of wavelengths.

Question 3

The intensity of a wave's pressure corresponds to a sound's pitch.

Accepted Answer

The intensity of a wave's pressure corresponds to a sound's loudness, not pitch. Pitch is determined by the frequency of the sound wave.

Question 4

Ordinarily we need to know not only what something is, but also where it is. Because vision doesn't give us this information directly, we must infer it. Explain five of the visual cues listed in the textbook.
Module: 4.2

Accepted Answer

The answer of Ordinarily we need to know not only...

Question 5

Despite the fact that we have only about 1,000 different types of receptors, we can detect about 10,000 different odors.

Accepted Answer

This is known as the olfactory paradox and is thought to be due to the fact that different combinations and concentrations of odor molecules can activate the same receptor in different ways, leading to a seemingly endless variety of detectable odors.

Question 6

_____ is the study of how physical events relate to psychological perceptions of those events.

Accepted Answer

Psychophysics studies the relationship between physical stimuli and psychological responses, such as how changes in light intensity affect visual perception or how different pitch sound waves affect auditory perception.

Question 7

Cones are predominantly gathered in a central part of the retina known as the _____.

Accepted Answer

Cones are responsible for color vision and are most densely packed in the fovea, which is the central part of the retina responsible for visual acuity.

Question 8

Which statement accurately describes the conclusions psychologists have drawn about the effects of subliminal messages on behavior?

Accepted Answer

While there is no consensus among psychologists, many studies suggest that subliminal messages can have a mild effect on behavior and thinking. However, these effects are typically short-lived and might not be significant enough to influence long-term decision making. There is no solid evidence that subliminal ads are powerful, and there are likely individual differences in how people respond to them.

Question 9

Signal detection theory improves on simple thresholds by including the influence of:

Accepted Answer

Signal detection theory accounts for how psychological factors, such as expectations and decision-making processes, influence the ability to discern between information-bearing patterns and random patterns in the presence of noise.

Question 10

Walking on a crowded downtown sidewalk, Ben thinks he hears his name called, but when he turns around, he cannot find anyone who might be speaking to him. In terms of signal detection theory, mistakenly believing he heard his name is an example of a _____.

Accepted Answer

Mistakenly believing he heard his name is an example of a false alarm in signal detection theory. A false alarm occurs when a person perceives a signal when there is none present.

Question 11

A sound coming from your left will reach your left year faster and with more intensity than your right year. Your brain can use these two facts to compute the location of the sound's source.

Accepted Answer

This is known as the "acoustic shadow" effect, which occurs because the sound waves must travel through or around the head to reach each ear, causing a difference in arrival time and intensity. The brain uses these differences to determine the sound's location.

Question 12

The Gestalt psychologists belonged to a movement that began in Germany and became influential in the mid-20^th century. Describe the concept that was central to their approach to perception. Then name four Gestalt principles and give an example that illustrates each principle. Module: 4.1

Accepted Answer

The answer of The Gestalt psychologists belonged to a movement...

Question 13

A familiar person walks into the room. Which of the following choices places the structures in the appropriate sequence required to recognize the individual?

Accepted Answer

The correct sequence for recognizing an individual visually starts with photoreceptors in the retina detecting the image, then the signal travels through the optic nerve, crosses at the optic chiasm (where some nerve fibers cross over to the opposite side), and finally reaches the visual cortex in the brain for processing and recognition.

Question 14

Sound waves are collected by the outer ear and channeled down the auditory canal. Describe the major structures of the ear and describe the role each plays in the process of hearing.
Module: 4.3

Accepted Answer

The answer of Sound waves are collected by the outer...

Question 15

There are no effective treatments for phantom limb pain.

Accepted Answer

While there is no one-size-fits-all treatment for phantom limb pain, there are several effective treatments that have shown success in reducing or eliminating symptoms. These include medications, psychological interventions, physical therapy, and more recently, non-invasive brain stimulation techniques.

Question 16

When measuring absolute threshold, reliable detection is said to occur when a person can detect a signal 99 percent of the time.

Accepted Answer

This is true. The 99 percent detection rate is considered a threshold for reliable detection, indicating that the signal is consistently detectable by the person being tested.

Question 17

Humans can recognize approximately 10,000 different smells. Explain how this is possible, including a general description of the olfactory process.
Module: 4.4

Accepted Answer

The answer of Humans can recognize approximately 10,000 different smells....

Question 18

The minimum stimulation required to detect a stimulus is a(n) _____, whereas the minimum required to detect the difference between two stimuli is a(n) _____.

Accepted Answer

The minimum stimulation required to detect a stimulus is known as the absolute threshold, while the minimum required to detect the difference between two stimuli is referred to as the difference threshold.

Question 19

There are two levels of processing involved in color vision. The first occurs in the retina and the second in the nerves cells that relay and process color information. Identify and explain the theory associated with each level.
Module: 4.2

Accepted Answer

The answer of There are two levels of processing involved...

Question 20

Dark adaptation is the process by which visual receptors become increasingly sensitive to dim light.

Accepted Answer

Dark adaptation occurs when the eyes adjust to low levels of light, gradually becoming more sensitive to dim light. This is a physiological process that enables humans to see in darkness or in low-light conditions.

Quiz 4: Sensation and Perception

People with tactile agnosia have difficulty identifying objects by touching them.

There are three basic types of cones in the retina, each of which responds maximally to a different wavelength.

The intensity of a wave's pressure corresponds to a sound's pitch.

Ordinarily we need to know not only what something is, but also where it is. Because vision doesn't give us this information directly, we must infer it. Explain five of the visual cues listed in the textbook. Module: 4.2

Despite the fact that we have only about 1,000 different types of receptors, we can detect about 10,000 different odors.

_____ is the study of how physical events relate to psychological perceptions of those events.

Cones are predominantly gathered in a central part of the retina known as the _____.

Which statement accurately describes the conclusions psychologists have drawn about the effects of subliminal messages on behavior?

Signal detection theory improves on simple thresholds by including the influence of:

Walking on a crowded downtown sidewalk, Ben thinks he hears his name called, but when he turns around, he cannot find anyone who might be speaking to him. In terms of signal detection theory, mistakenly believing he heard his name is an example of a _____.

A sound coming from your left will reach your left year faster and with more intensity than your right year. Your brain can use these two facts to compute the location of the sound's source.

The Gestalt psychologists belonged to a movement that began in Germany and became influential in the mid-20^th century. Describe the concept that was central to their approach to perception. Then name four Gestalt principles and give an example that illustrates each principle. Module: 4.1

A familiar person walks into the room. Which of the following choices places the structures in the appropriate sequence required to recognize the individual?

Sound waves are collected by the outer ear and channeled down the auditory canal. Describe the major structures of the ear and describe the role each plays in the process of hearing. Module: 4.3

There are no effective treatments for phantom limb pain.

When measuring absolute threshold, reliable detection is said to occur when a person can detect a signal 99 percent of the time.

Humans can recognize approximately 10,000 different smells. Explain how this is possible, including a general description of the olfactory process. Module: 4.4

The minimum stimulation required to detect a stimulus is a(n) _, whereas the minimum required to detect the difference between two stimuli is a(n) _.

There are two levels of processing involved in color vision. The first occurs in the retina and the second in the nerves cells that relay and process color information. Identify and explain the theory associated with each level. Module: 4.2

Dark adaptation is the process by which visual receptors become increasingly sensitive to dim light.

Quiz 4: Sensation and Perception

People with tactile agnosia have difficulty identifying objects by touching them.

There are three basic types of cones in the retina, each of which responds maximally to a different wavelength.

The intensity of a wave's pressure corresponds to a sound's pitch.

Ordinarily we need to know not only what something is, but also where it is. Because vision doesn't give us this information directly, we must infer it. Explain five of the visual cues listed in the textbook. Module: 4.2

Despite the fact that we have only about 1,000 different types of receptors, we can detect about 10,000 different odors.

_____ is the study of how physical events relate to psychological perceptions of those events.

Cones are predominantly gathered in a central part of the retina known as the _____.

Which statement accurately describes the conclusions psychologists have drawn about the effects of subliminal messages on behavior?

Signal detection theory improves on simple thresholds by including the influence of:

Walking on a crowded downtown sidewalk, Ben thinks he hears his name called, but when he turns around, he cannot find anyone who might be speaking to him. In terms of signal detection theory, mistakenly believing he heard his name is an example of a _____.

A sound coming from your left will reach your left year faster and with more intensity than your right year. Your brain can use these two facts to compute the location of the sound's source.

The Gestalt psychologists belonged to a movement that began in Germany and became influential in the mid-20th century. Describe the concept that was central to their approach to perception. Then name four Gestalt principles and give an example that illustrates each principle. Module: 4.1

A familiar person walks into the room. Which of the following choices places the structures in the appropriate sequence required to recognize the individual?

Sound waves are collected by the outer ear and channeled down the auditory canal. Describe the major structures of the ear and describe the role each plays in the process of hearing. Module: 4.3

There are no effective treatments for phantom limb pain.

When measuring absolute threshold, reliable detection is said to occur when a person can detect a signal 99 percent of the time.

Humans can recognize approximately 10,000 different smells. Explain how this is possible, including a general description of the olfactory process. Module: 4.4

The minimum stimulation required to detect a stimulus is a(n) _____, whereas the minimum required to detect the difference between two stimuli is a(n) _____.

There are two levels of processing involved in color vision. The first occurs in the retina and the second in the nerves cells that relay and process color information. Identify and explain the theory associated with each level. Module: 4.2

Dark adaptation is the process by which visual receptors become increasingly sensitive to dim light.

The Gestalt psychologists belonged to a movement that began in Germany and became influential in the mid-20^th century. Describe the concept that was central to their approach to perception. Then name four Gestalt principles and give an example that illustrates each principle. Module: 4.1

The minimum stimulation required to detect a stimulus is a(n) _, whereas the minimum required to detect the difference between two stimuli is a(n) _.