Morpho-syntactic properties of simultaneous bilingualism: Evidence from bilingual English-Turkish

Abstract

Aims and Objectives/Purpose/Research Questions:

A number of studies on the acquisition of non-null subject languages in child grammars have suggested that while overt subjects are mainly used with finite forms, null subjects co-occur with non-finite forms. The purpose of this study is to explore the proposed relationship between subject realization and verbal morphology in a simultaneous bilingual context.

Design/Methodology/Approach:

Longitudinal case study

Data and Analysis:

The present study analyses longitudinal data from an English-Turkish bilingual child (2;4–3;9), with special reference to the distribution of finite forms and the suppliance of overt subjects on the one hand, and subject drop and the use of non-finite forms, on the other. The English/Turkish data comprise 37 recordings collected regularly for nearly 18 months.

Findings/Conclusions:

English-Turkish bilingual data show that the majority of the overt subjects in the English language of the bilingual child occur both with inflected and uninflected verb forms. At a time the child has consistent and productive suppliance of overt subjects in his English, he uses uninflected verb forms with overt subjects, suggesting that the proposed association discussed in the literature does not necessarily hold. Moreover, around the same time the bilingual child’s Turkish presents robust evidence for the productive and systematic use of inflected forms as well as omission of subjects.

Originality and significance/implications:

These data, based on a less commonly studied language pair, English-Turkish, challenge previous research that postulates an association between overt subjects and finite forms versus null subjects and non-finite root forms. Overall, there appears to be a relationship between the acquisition of subject–verb agreement in the bilingual child’s Turkish and the correct suppliance of overt subjects in his English, suggesting language-particular devices for the realization of person deixis.

Keywords

English-Turkish simultaneous bilingual acquisition overt and null subjects finite and non-finite root forms longitudinal data

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