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Despite the bilateral nature of the human auditory system, many species, including humans, exhibit lateralized auditory processing. Certain birds, such as zebra finches, favor their right ear when listening for predators, while frogs often respond more to sounds entering their left ear during mating calls. In humans, this asymmetry is most evident in speech processing, which typically engages the left hemisphere. Less apparent, however, is the tendency to react more quickly to sounds entering the right ear. Studies indicate that people prefer to hold phones to their right ear, despite equal hearing capacity in both, suggesting a deeper neural basis for this phenomenon.
Kimura found that individuals asked to recall digits were more accurate when the numbers were presented to their right ear. She suggested that this bias reflected the dominance of the left hemisphere in language processing. However, subsequent research by Bryden proposed that environmental factors, such as handedness, might contribute to ear preference. Despite this, later studies confirmed that the right-ear advantage persisted even when such external factors were controlled, reinforcing the role of hemispheric specialization in auditory tasks and cognitive processing.
Deutsch explored whether this lateralization extended to musical perception. In her study, participants listened to melodies through headphones and were tasked with identifying pitch variations. Right-handed participants consistently performed better when the melodies were presented to the right ear. Deutsch hypothesized that this was due to the left hemisphere’s superior processing of temporal patterns, essential for rhythm and melody recognition, particularly for complex compositions or unfamiliar pieces requiring greater auditory attention.
The author’s purpose in mentioning zebra finches and frogs is to
A. demonstrate that lateralized auditory processing can vary based on environmental context and species-specific needs.
B. highlight that lateralized auditory biases are not unique to humans but are evident across a range of animal species.
C. contrast the auditory processing of animals with the symmetrical auditory capacity observed in humans.
D. suggest that auditory lateralization in animals is primarily driven by mating behaviors and predator detection.
E. propose that hemispheric specialization for auditory input evolved differently in animals compared to humans.
Kimura found that individuals asked to recall digits were more accurate when the numbers were presented to their right ear. She suggested that this bias reflected the dominance of the left hemisphere in language processing. However, subsequent research by Bryden proposed that environmental factors, such as handedness, might contribute to ear preference. Despite this, later studies confirmed that the right-ear advantage persisted even when such external factors were controlled, reinforcing the role of hemispheric specialization in auditory tasks and cognitive processing.
Deutsch explored whether this lateralization extended to musical perception. In her study, participants listened to melodies through headphones and were tasked with identifying pitch variations. Right-handed participants consistently performed better when the melodies were presented to the right ear. Deutsch hypothesized that this was due to the left hemisphere’s superior processing of temporal patterns, essential for rhythm and melody recognition, particularly for complex compositions or unfamiliar pieces requiring greater auditory attention.
The author’s purpose in mentioning zebra finches and frogs is to
A. demonstrate that lateralized auditory processing can vary based on environmental context and species-specific needs.
B. highlight that lateralized auditory biases are not unique to humans but are evident across a range of animal species.
C. contrast the auditory processing of animals with the symmetrical auditory capacity observed in humans.
D. suggest that auditory lateralization in animals is primarily driven by mating behaviors and predator detection.
E. propose that hemispheric specialization for auditory input evolved differently in animals compared to humans.
03 Oct 2025, 20:26
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Official Solution:
Despite the bilateral nature of the human auditory system, many species, including humans, exhibit lateralized auditory processing. Certain birds, such as zebra finches, favor their right ear when listening for predators, while frogs often respond more to sounds entering their left ear during mating calls. In humans, this asymmetry is most evident in speech processing, which typically engages the left hemisphere. Less apparent, however, is the tendency to react more quickly to sounds entering the right ear. Studies indicate that people prefer to hold phones to their right ear, despite equal hearing capacity in both, suggesting a deeper neural basis for this phenomenon.
Kimura found that individuals asked to recall digits were more accurate when the numbers were presented to their right ear. She suggested that this bias reflected the dominance of the left hemisphere in language processing. However, subsequent research by Bryden proposed that environmental factors, such as handedness, might contribute to ear preference. Despite this, later studies confirmed that the right-ear advantage persisted even when such external factors were controlled, reinforcing the role of hemispheric specialization in auditory tasks and cognitive processing.
Deutsch explored whether this lateralization extended to musical perception. In her study, participants listened to melodies through headphones and were tasked with identifying pitch variations. Right-handed participants consistently performed better when the melodies were presented to the right ear. Deutsch hypothesized that this was due to the left hemisphere’s superior processing of temporal patterns, essential for rhythm and melody recognition, particularly for complex compositions or unfamiliar pieces requiring greater auditory attention.
The author’s purpose in mentioning zebra finches and frogs is to
A. demonstrate that lateralized auditory processing can vary based on environmental context and species-specific needs.
B. highlight that lateralized auditory biases are not unique to humans but are evident across a range of animal species.
C. contrast the auditory processing of animals with the symmetrical auditory capacity observed in humans.
D. suggest that auditory lateralization in animals is primarily driven by mating behaviors and predator detection.
E. propose that hemispheric specialization for auditory input evolved differently in animals compared to humans.
A) Incorrect. The finch and frog examples do show different situations (predator vigilance versus mating calls), yet the passage introduces them immediately after stating that “many species, including humans, exhibit lateralized auditory processing.” The primary role of these examples is to confirm that ear bias occurs in animals as well as humans, not to map every possible context in which it varies. With only two species cited, the evidence is too limited to claim that environmental context is the central point.
B) Correct Answer. Zebra finches and frogs are presented to illustrate that ear preferences are found in non-human species. By showing birds that favor the right ear for predator sounds and frogs that favor the left ear for mating calls, the passage demonstrates that lateralized auditory biases extend beyond humans, thereby supporting the statement that such biases appear “across a range of animal species.”
C) Incorrect. The passage never claims that humans have symmetrical auditory capacity. In fact, it later describes a right-ear advantage in people. Therefore, these animal examples are not contrasted with symmetry in humans.
D) Incorrect. Predator detection and mating are cited as specific tasks for each species, but the passage does not argue that these functions are the principal drivers of auditory lateralization in animals overall. It simply uses the behaviors to exemplify the bias.
E) Incorrect. The text does not discuss the evolutionary pathways of hemispheric specialization in animals versus humans. No evidence is offered about how or when different species evolved their ear preferences, so this option goes beyond the provided information.
Answer: B
Despite the bilateral nature of the human auditory system, many species, including humans, exhibit lateralized auditory processing. Certain birds, such as zebra finches, favor their right ear when listening for predators, while frogs often respond more to sounds entering their left ear during mating calls. In humans, this asymmetry is most evident in speech processing, which typically engages the left hemisphere. Less apparent, however, is the tendency to react more quickly to sounds entering the right ear. Studies indicate that people prefer to hold phones to their right ear, despite equal hearing capacity in both, suggesting a deeper neural basis for this phenomenon.
Kimura found that individuals asked to recall digits were more accurate when the numbers were presented to their right ear. She suggested that this bias reflected the dominance of the left hemisphere in language processing. However, subsequent research by Bryden proposed that environmental factors, such as handedness, might contribute to ear preference. Despite this, later studies confirmed that the right-ear advantage persisted even when such external factors were controlled, reinforcing the role of hemispheric specialization in auditory tasks and cognitive processing.
Deutsch explored whether this lateralization extended to musical perception. In her study, participants listened to melodies through headphones and were tasked with identifying pitch variations. Right-handed participants consistently performed better when the melodies were presented to the right ear. Deutsch hypothesized that this was due to the left hemisphere’s superior processing of temporal patterns, essential for rhythm and melody recognition, particularly for complex compositions or unfamiliar pieces requiring greater auditory attention.
The author’s purpose in mentioning zebra finches and frogs is to
A. demonstrate that lateralized auditory processing can vary based on environmental context and species-specific needs.
B. highlight that lateralized auditory biases are not unique to humans but are evident across a range of animal species.
C. contrast the auditory processing of animals with the symmetrical auditory capacity observed in humans.
D. suggest that auditory lateralization in animals is primarily driven by mating behaviors and predator detection.
E. propose that hemispheric specialization for auditory input evolved differently in animals compared to humans.
A) Incorrect. The finch and frog examples do show different situations (predator vigilance versus mating calls), yet the passage introduces them immediately after stating that “many species, including humans, exhibit lateralized auditory processing.” The primary role of these examples is to confirm that ear bias occurs in animals as well as humans, not to map every possible context in which it varies. With only two species cited, the evidence is too limited to claim that environmental context is the central point.
B) Correct Answer. Zebra finches and frogs are presented to illustrate that ear preferences are found in non-human species. By showing birds that favor the right ear for predator sounds and frogs that favor the left ear for mating calls, the passage demonstrates that lateralized auditory biases extend beyond humans, thereby supporting the statement that such biases appear “across a range of animal species.”
C) Incorrect. The passage never claims that humans have symmetrical auditory capacity. In fact, it later describes a right-ear advantage in people. Therefore, these animal examples are not contrasted with symmetry in humans.
D) Incorrect. Predator detection and mating are cited as specific tasks for each species, but the passage does not argue that these functions are the principal drivers of auditory lateralization in animals overall. It simply uses the behaviors to exemplify the bias.
E) Incorrect. The text does not discuss the evolutionary pathways of hemispheric specialization in animals versus humans. No evidence is offered about how or when different species evolved their ear preferences, so this option goes beyond the provided information.
Answer: B
