Universal #1101

Legacy number: 1101

 Number  1097
 Original  If a language has to maintain a high number of vowel distinctions which are perceptually close to each other, then the addition of distinctive vowel nasalization creates an unstable system ... leading to elimination of distinctively nasal vowels or reducing the number of oral vowels (which is rare).
 Standardized  IF there is a high number of vowel distinctions which are perceptually close to each other, THEN the addition of distinctive vowel nasalization creates an unstable system leading to elimination of distinctively nasal vowels or reducing the number of oral vowels (which is rare).
 Keywords  nasal, vowel, nasalization
 Domain  phonology
 Type  no genuine implication; rather: provided that
 Status  diachronic
 Quality  statistical
 Basis  American English, Swedish (both Germanic), Hindi (Indo-Iranian), French, Brazilian Portuguese (both Romance, all IE), Amoy Chinese (Sinitic, Sino-Tibetan)
 Source  Clumeck 1975: 144

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Discussion
Notes
This diachronic implication is speculative and is not based directly on the given sample of languages.
Comment
Frans Plank · 3 Aug 2006
This diachronic implication is speculative and is not based directly on the given sample of languages.