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Children's acquisition of Mandarin tones in context

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thesis
posted on 28.03.2022, 22:21 authored by Ping Tang
Mandarin is a tonal language with four lexical tones and two contextual tones, i.e., neutral tone and tone sandhi, exhibiting tonal variations across contexts. Previous studies found that Mandarin-learning children acquire lexical tones early (before 3yrs.), but the neutral tone and tone sandhi are later acquired (after 4;6). Children with hearing impairment/cochlear implants (CIs) have problems in acquiring lexical tones unless implanted early or have long CI experience, since CIs do not transmit pitch information effectively; it is unclear how those implanted early perform on contextual tones. The general aim of this thesis was therefore to better understand the acquisition of contextual tones by both typically developing children and those with hearing impairment using acoustic, rather than perceptual measures. This thesis consisted of seven studies. Firstly, we examined how contextua ltones are realized in children's language input, i.e., infant-directed speech (IDS) and clear speech, where slower, hyperarticulated speech (as directed to children or possibly hearing impaired populations) might destroy the context for appropriate realization of contextual tones, thus potentially explaining the later acquisition of these tonal processes (Studies 1 & 2). However, our findings showed that the key features of contextual tones are well realized in both registers, suggesting that later acquisition is not due to the input. Next, we examined children's contextual tone productions in novel (rather than known) items, exploring when their knowledge of contextual tones becomes productive (Studies 3, 4 & 5). The results showed that (1) normal hearing 3-year-olds have already acquired productive knowledge of contextual tones, correctly producing tonal variations across contexts, though adult-like acoustic implementation is not fully mastered until age 5; (2) children with CIs face challenges in producing correct contextual tones, but early implantation (before age 2) facilitates lexical and contextual tonal acquisition. Finally, we tested children's perception of lexical tones and tone sandhi in novel compounds using a mispronunciation/eyetracking task (Studies 6 & 7). The results showed that, (1) all normal hearing participants could detect lexical tone mispronunciations, but none were sensitive to the novel compound tone sandhi mispronunciations; and (2) even detecting lexical tone mispronunciations was a challenge for the children with CIs. Taken together, the findings of this thesis suggest that contextual tones are not later acquired by normal hearing children, and acquiring typical contextual tones is possible for children with hearing impairment as long as they receive CIs early.

History

Table of Contents

Chapter One. Thesis introduction -- Chapter Two. Phonetic enhancement of Mandarin vowels and tones : infant-directed speech and Lombard speech -- Chapter Three. Acoustic realization of Mandarin neutral tone and tone sandhi in infant-directed speech and Lombard speech -- Chapter Four. Acquisition of speech syllables in tonal languages : acoustic evidence from neutral tone in Mandarin Chinese -- Chapter Five. The acquisition of phonological alterations : the case of the Mandarin tone sandhi process -- Chapter Six. The acquisition of Mandarin tonal processes by children with cochlear implants -- Chapter Seven. The representation of allophonic variants of tone sandhi in the developing lexicon -- Chapter Eight. Children with cochlear implants' representation of allophonic variants of tone sandhi -- Chapter Nine. Thesis discussion.

Notes

"Department of Linguistics, ARC Centre of Excellence in Cognition and its Disorders, Faculty of Human Sciences, Macquarie University, Sydney, Australia" -- title page. Includes bibliographical references Thesis by publication.

Awarding Institution

Macquarie University

Degree Type

Thesis PhD

Degree

PhD, Macquarie University, Faculty of Human Sciences, Department of Linguistics

Department, Centre or School

Department of Linguistics

Year of Award

2018

Principal Supervisor

Katherine Demuth

Additional Supervisor 1

Nan Xu Rattanasone

Additional Supervisor 2

Ivan Yuen

Rights

Copyright Ping Tang 2018. Copyright disclaimer: http://mq.edu.au/library/copyright

Language

English

Jurisdiction

China

Extent

1 online resource (xii, 437 pages) diagrams, graphs, tables

Former Identifiers

mq:71815 http://hdl.handle.net/1959.14/1278390