Linguist: The indigenous Vana language uses a highly complex tonal system to convey grammatical tense. Researchers have documented that Vana children successfully master this tonal system by age three, significantly earlier than children in other cultures master grammatical tense. This rapid mastery must result from the traditional high-protein Vana diet, which significantly accelerates the physical development of the auditory cortex during early childhood.
Which of the following statements are necessary assumptions required by the linguist's argument? (Select all that apply)
- Vana children consume the traditional high-protein diet prior to or during the time they are mastering the tonal system.Cevap
- The physical development of the auditory cortex is actually involved in a child's ability to learn a tonal system that conveys tense.Cevap
- CA high-protein diet is biologically sufficient to accelerate the development of the auditory cortex in any human child.
- DThe Vana language is the only known language in the world that relies on a tonal system to communicate grammatical tense.
- EChildren in other cultures who master grammatical tense later than age three do not consume a high-protein diet.
Cevap
The necessary assumptions are that the children consume the diet during the relevant developmental window, and that auditory cortex development plays a necessary role in learning the tonal system.
The argument relies on a specific causal mechanism: Diet -> Auditory Cortex Development -> Early Mastery of Tonal Tense. For this chain to be logically possible, the proposed cause (the diet) must actually be present at the appropriate developmental stage, and the biological mechanism (the auditory cortex) must actually govern the observed linguistic outcome. The argument absolutely requires both of these unstated premises to hold true.
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Identifying Necessary Assumptions in Causal Arguments
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