2000 Fiscal Year Final Research Report Summary
Developing a Manual for Speech Pathologists to Analyze Phonological Systems of Speech-Disordered Children
| Project/Area Number |
10610514
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
言語学・音声学
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| Research Institution | Osaka University of Foreign Studies |
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Principal Investigator |
UEDA Isao Osaka University of Foreign Studies, Faculty of Foreign Studies Associate Professor, 外国語学部, 助教授 (50176583)
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| Project Period (FY) |
1998 – 2000
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| Keywords | speech lisorder / phonology / phonological acquisition / rhotics / Optimality Theory / constraint |
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| Research Abstract |
Although the acquisition of Japanese 'r' poses many problems and the early substitution of other phonemes for 'r, ' a very common type of functional speech disorder termed 'rhotacism, ' is notably well-known in Japanese first language acquisition, it has seldom been a subject matter for phonological analysis. In this research I first cast light on the two representative types of rhotacism by observing some descriptive acquisitional data. I then point out theoretical deficits of a previous derivation-based account and go on to reanalyze the data under Optimality Theory. It has become evident that the different stages in the acquisition of Japanese 'r' is a result of a different ranking of three constraints at each stage before the adult-like ranking of the fully-developed phonological system is acquired. Moreover, the distinction between the two representative types of rhotacism in acquisition can be reduced to the difference in ranking. In optimality-theoretic terms, the acquisition of 'r' is characterized as the promotion of a faithfulness constraint, but the way the promotion occurs is different in the two types of rhotacism.
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