Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.601102
Title: Investigating characteristics of language production in the written and spoken production of English and Chinese
Author: Qu, Qingqing
Awarding Body: University of Bristol
Current Institution: University of Bristol
Date of Award: 2013
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Abstract:
In recent years, a growing number of studies have been conducted to investigate the cognitive processes and mechanisms underlying language production. However, some fundamental issues still remain unsolved or even untouched, both in written and spoken production. The work reported in this thesis investigated a range of fundamental issues, in both the spoken and the written modalities, using both chronometric and electrophysiological techniques. To be specific, Chapter 1 provided relevant theory background. Chapter 2 focused on whether phonology constrains written word production. Results from a picture-word interference task showed that phonologically related distractor words (orthographically unrelated) facilitated the written naming of pictures. Results from a Stroop-like task showed that homophones of colour characters facilitated the written naming of colours. These findings constitute clear evidence that phonological codes constrain written word production. Chapter 3 compared the role of phonology in the written production of single and multiple words within a picture-word interference task. Results showed that the involvement of phonology was indeed more pronounced in the written production of multiple than of single words, as might be theoretically predicted due to greater demand on short-term memory for the production of multiple words. Chapter 4 investigated how activation flows between lexical selection and orthographic encoding in written word production using the written picture-colour priming task. Results showed that the task-irrelevant object name influenced written responses of colour naming, suggesting that orthographic encoding was not restricted to the selected target node but also extended to other co-activated nontarget nodes. This indicates that activation from lexical selection to orthographic encoding flows in a cascaded manner. Chapter 5 and Chapter 6 focused on the properties of orthographic representations underlying written production. Chapter 5 aimed to explore whether logo grapheme is a representational unit in the written production of Chinese. The results from the implicit priming paradigm showed that the logographeme-based preparation effect was not reliably replicated across a series of experiments. We propose that due to its specific characteristics, the [p paradigm might not be appropriate for exploring the psychological reality of logo graphemes. Chapter 6 investigated whether syllable is a representational unit in the written production of English. In constrast to previous findings in languages with clear syllable boundaries, results of the copying task showed that the temporal features of the written execution of English was not modulated by syllabic structure, suggesting that syllables may not play an important role in English writing, at least not as important as in languages with clear syllable boundaries. All studies above concerned written production while Chapter 7 and 8 focused on spoken production. Chapter 7 explored whether Mandarin Chinese speakers process phonemes when they produce words using ERPs. Whereas naming latencies were unaffected by phoneme overlap in the production of adjective-noun phrases, ERP responses were modulated from 200 ms after picture onset. The ERP findings therefore provided support for the claim that phonemic segments constitute processing units of phonological encoding even for speakers of languages that do not encode such units orthographically. Chapter 8 explored the universality of the principle of cascaded processing by testing Chinese spoken production. [n contrast to most previous findings in alphabetic languages, no picture-picture priming effect was observed for Chinese speakers, which raises a possibility that the principle of cascaded processing may be not applied to Chinese spoken production. Finally, Chapter 9 provides a general summary of this thesis and future directions.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.601102  DOI: Not available
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