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Difficulty: Very hardInferences from the Text

Proponents of the 'musilanguage' hypothesis postulate that language and music evolved from a common precursor communication system in early hominids—a system that utilized pitch and rhythm to convey affective states before bifurcating into semantically discrete (language) and structurally abstract (music) domains. This theory predicts that speakers of tonal languages, where lexical meaning is contingent on pitch contour, should exhibit enhanced processing of musical pitch relative to speakers of non-tonal languages. While some neuroimaging studies support this by revealing overlapping cortical activation in tonal language speakers during both lexical and musical pitch tasks, critics of the domain-general view argue that such neural overlap merely reflects the co-opting of low-level acoustic processing mechanisms rather than a shared cognitive architecture. These critics note that individuals with congenital amusia (tone deafness) often struggle with structural musical pitch discrimination but exhibit no deficits in tonal language comprehension. Consequently, the domain-specific camp asserts that the preservation of lexical tone comprehension in amusic individuals definitively demonstrates that the higher-level cognitive mechanisms governing music processing are functionally autonomous from those governing language, even if both draw upon the same basal auditory inputs.

Based on the passage, which of the following inferences can be logically drawn regarding the cognitive processing of pitch and the evolution of language and music? (Select all that apply)

  1. Critics of the domain-general view assume that the utilization of identical lower-level neural processing systems is not sufficient evidence to conclude that two cognitive functions share a unified cognitive architecture.Answer
  2. B
    Neuroimaging studies demonstrating overlapping cortical activation in tonal language speakers definitively resolve the debate in favor of the domain-general view.
  3. According to the musilanguage hypothesis, the earliest ancestral communication systems conveyed information without relying entirely on semantically discrete units.Answer
  4. D
    Individuals with congenital amusia are completely incapable of processing the basal auditory inputs that are necessary for comprehending lexical tone.
  5. E
    Tonal languages preserve the pitch and rhythm structures of early hominid communication much more accurately than non-tonal languages do.

Answer

The correct statements are that critics assume shared lower-level neural pathways do not prove a shared cognitive architecture, and that the musilanguage hypothesis posits an ancestral system that did not rely entirely on discrete semantics.
The correct statements accurately synthesize the explicit definitions given in the text. First, the critics' dismissal of neuroimaging data relies logically on the principle that low-level neurological overlap does not equate to high-level architectural unity. Second, the definition of the common precursor specifies that it conveyed affective states through pitch and rhythm before language split off to become semantically discrete, proving the precursor lacked complete reliance on discrete semantics.

Step-by-Step Solution

1
Analyze the stem for the core conflict
The passage outlines a debate between the 'musilanguage' (domain-general) hypothesis, which sees shared architecture between music and language, and 'domain-specific' critics, who argue the two are autonomous.
Understanding the precise boundaries of each camp's argument is necessary to evaluate the inferences.
2
Evaluate the first correct inference regarding critics' assumptions
The passage says critics argue neural overlap 'merely reflects the co-opting of low-level acoustic processing mechanisms rather than a shared cognitive architecture.'
This directly entails the assumption that overlapping lower-level processing is an insufficient condition for concluding there is a unified, higher-level cognitive architecture.
3
Evaluate the second correct inference regarding the musilanguage hypothesis
The text states the precursor system 'utilized pitch and rhythm to convey affective states before bifurcating into semantically discrete' domains.
Because semantic discreteness emerged after the bifurcation, the precursor communication system must have functioned without relying entirely on semantically discrete units.
4
Eliminate unsupported distractors
Distractors claiming neuroimaging resolved the debate, claiming amusic individuals cannot process basal auditory inputs, or asserting tonal languages better preserve ancient structures contradict the text or introduce outside assumptions.
Inferences must be strictly bounded by the textual evidence provided.

Key Concept

Logical Deduction and Synthesis of Viewpoints
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