| This dissertation investigates code-switching (CS), the concurrent use of more than one language in conversation, commonly observed in bilingual speech. Assuming that code-switching is subject to universal principles, just like monolingual grammar, the dissertation provides a principled account of code-switching, with particular emphasis on OV∼VO variation in two typologically similar language pairs, Korean-English and Japanese-English bilingual speech.;Taking the view into consideration that linguistic variation is a result of variation in the domain of functional categories rather than lexical roots (e.g., Borer 1984; Chomsky 1995), the role of light verbs in word order in code-switching is further investigated and tested against Korean-English and Japanese-English bilingual speakers' introspective judgments of the code-switching patterns presented to them in the form of a questionnaire.;The results provide strong evidence indicating that the distinction between lexical and functional or light verbs play a major role in deriving different word order, OV and VO in Korean-English and Japanese-English code-switching, respectively, supporting the hypothesis that parametric variation is attributed to differences in the features of a functional category in the lexicon. In particular, the explanation pursued in this dissertation is based on feature inheritance, proposed in recent developments the Minimalist Program. To account for OV∼VO variation in Korean-English and Japanese-English code-switching, feature inheritance, primarily proposed for the C-T domain by Chomsky (2000, 2001, 2008), is extended to the v-ASP domain, thereby developing it into a full-fledged mechanism for the two phases, C and v, of the clause. Two principles of feature inheritance (feature selection and feature expiration) and three operational rules (earliness, economy, and multiple agree under antisymmetry) are proposed to show that feature inheritance is designed to make a derivation proceed economically and efficiently in the syntax.;Based on this, the dissertation presents how head-initial structure in English (C-S-V-O) and head-final structure (S-O-V-C) in Korean and Japanese are derived, and argues that the OV-VO variation in Korean-English and Japanese-English code-switching is due to a result of object shift: if object shift occurs, OV is derived. On the other hand, if object shift fails, the underlying VO structure will surface. |
