Optimality in second language phonology: codas in Thai ESL

Abstract

This study presents an Optimality Theoretic account of syllable codas in Thai ESL. To date, there is little research in the literature on the study of codas, and Thai ESL presents an interesting test case since Thai has a more restrictive set of constraints on what can occur syllable-finally than does English. Thai ESL learners thus need to resolve the conflict between what they know (their first language or L1) and what they are learning (their second language or L2 grammar). Optimality Theory provides the mechanisms to understand how this phonological conflict is resolved,and in what ways. The main findings of this study are that the native language constraint rankings interact with target constraint rankings in a specific way, allowing a restricted and predictable range of production types by intermediate Thai learners of ESL. The study argues that constraint rerankings occur in an ordered fashion:the constraints on which segments can appear in codas (CODA-AC) re-rank before the constraint disallowing complex codas (*COMPLEX), thereby correctly defining the observed stages in ESL coda development.

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