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🎧 上級英語オーディオ練習
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📝 上級英語ダイアログ
In semantics, the contrast between categorical boundaries and graded structure is a central problem. Scholars debate whether lexical classes are sharply delineated or whether they show gradients. Oh, this debate matters for formal models of meaning and for experimental design. Prototype theory argues that categories have central exemplars that are more salient. Experiments reminded me that prototype effects are robust across modalities. Many studies reveal that discrimination is not uniform across a continuum. Perceptual discrimination often peaks near the cut between categories. That sharp cut is empirical in some tasks, but it is not always absolute. Other experiments reminded participants of contextual cues and observed systematic shifts in judgments. Oh, context shifts can blur or, conversely, sharpen categorical boundaries. Methodologically, signal detection metrics and gradient scaling are useful. These techniques provide a more nuanced heuristic for mapping semantic structure. I therefore recommend continuous measures in addition to binary judgments. I also recommend attending to ecological validity across communicative settings. A pragmatic approach reduces the temptation to impose artificial cuts on data. Theoretical pluralism need not be nihilistic. Instead, pluralism acknowledges that prototypes, rules, and exemplars each contribute to our explanations. If researchers adopt convergent methods, they will cut down on overgeneralization and increase explanatory precision.
📝 📚 上級練習問題
1
What does prototype theory argue, according to the speaker?
不正解
正解:
A
説明:
The speaker explicitly states that 'Prototype theory argues that categories have central exemplars that are more salient.' Option B is incorrect because the speaker contrasts prototypes with strict rule-based views. Option C is incorrect because context is said to shift judgments, not wholly determine category structure. Option D is incorrect because prototype theory posits internal structure (central exemplars), not arbitrariness.
2
Where does the speaker say perceptual discrimination often peaks?
不正解
正解:
A
説明:
The passage states, 'Perceptual discrimination often peaks near the cut between categories.' Option B is wrong because the speaker contrasts peaks near the cut with prototype centrality. Option C is wrong because the speaker says discrimination is not uniform. Option D is wrong because extremes are not mentioned as the usual peak location.
3
Which methodological recommendation does the speaker make?
不正解
正解:
A
説明:
The speaker explicitly recommends 'continuous measures in addition to binary judgments.' Option B is the opposite of the recommendation. Option C is incorrect because the speaker endorses signal detection metrics as useful. Option D is incorrect because the speaker recommends attending to ecological validity, not disregarding it.
4
What is the speaker's attitude toward strict categorization?
不正解
正解:
A
説明:
The speaker cautions against imposing 'artificial cuts on data' and endorses pluralism and convergent methods, indicating skepticism toward strict categorization. Option B is incorrect because the speaker argues for continuous measures alongside binary ones. Option C is wrong because the speaker directly discusses categorization issues. Option D is incorrect because the speaker does not want to abandon categories but to acknowledge multiple contributing models.
5
Why does the speaker advocate theoretical pluralism?
不正解
正解:
A
説明:
The speaker states 'pluralism acknowledges that prototypes, rules, and exemplars each contribute,' which is the rationale given. Option B is not supported; ease of experimentation is not mentioned. Option C overstates the speaker's position; they avoid saying singular theories are always false. Option D is incorrect because the speaker emphasizes empirical methods and convergent data, not eliminating empirical data.
6
In the sentence 'These techniques provide a more nuanced heuristic for mapping semantic structure', what does 'heuristic' most nearly mean?
不正解
正解:
A
説明:
In this context, 'heuristic' refers to a practical method or cognitive shortcut that aids mapping structure. Option B is incorrect because a heuristic is not a proven theorem. Option C is wrong because the passage uses heuristic in a methodological, not ethical, sense. Option D is incorrect because 'heuristic' is not synonymous with 'prototype.'
7
What outcome does the speaker expect from adopting convergent methods?
不正解
正解:
A
説明:
The speaker concludes that convergent methods 'will cut down on overgeneralization and increase explanatory precision.' Option B is incorrect because the speaker presents a cautious, not instant, solution. Option C is wrong because context effects are emphasized as important. Option D is incorrect because the speaker endorses pluralism rather than proving one theory exclusively valid.
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