1.   Full name: Trần Thùy An                  2. Gender: female

3. Date of birth: 25/9/1986                     4. Place of birth: Nam Dinh

5. Admission decision number: 1745/QĐ-XHNV dated 13/07/2017 of  the President  of the University of Social Sciences and Humanities

6. Changes in academic process: Change of scientific supervisor of doctoral thesis according to Decision 2100/QD-XHNVdated 24/05/2019; extended the training period from 13/7/2020 to 13/7/2022

7. Official thesis title: Repair in Vietnamese conversational

8. Major: Vietnamese language  9. Code: 62.22.01.02

10. Supervisors:Assoc. Prof. Dr. Vu Thi Thanh Huong

11. Summary of the new findings of the thesis:

In order to clarify the structural and functional features of the repair in Vietnamese conversational, the thesis used ten audio and video recorded natural Vietnamese conversations (each conversation has a length of less than one hour). Audio and video recordings are meticulously taped. The transcripts are carefully re-read, combined with listening and reviewing the audio and video recordings of the conversations to identify the repair in Vietnamese conversation. Surveying and analyzing 400 repairs contained in the research documents, the thesis obtained the following results:

- The repair is occurs regularly in Vietnamese conversation whenever trouble sources arise regarding to issues of speaking, listening and understanding. Vietnamese conversation repairs are divided into two main types: self - initiated repair (with 242/400, accounting for 60.5%) and other - initiated repair (with 158/400, accounting for 39.5%). It suggests that self - initiated repair is a common and preferred activity in Vietnamese conversation.

- Regarding to structure: The structure of Vietnamese repair usually includes three parts, including: trouble source; repair initiation and repair itself. In addition to the above three parts, the structure has an additional fourth part (It's the repair completion in the self initiated - other repair, the structure has an additional fourth part, the repair completion). Each of these parts includes many elements or is implemented in different ways is performed in different ways in a particular type of repair (these are: self initiated - self repair; self initiated - other repair; other initiated - self repair and other initiated - other  repair)

- Regarding to function: In addition to the main function of repair, which is to fix problems that may be related to speaking, listening and understanding, repair in Vietnamese conversation (including self - initiated repair and other - initiated repair) also perform a number of pragmatic functions. Those pragmatic functions are: expressing the avoidance of the speaker; showing a change in the speaker's attitude or manifesting jokes or humor; expressing the dissent; surprise and showing the attitude adjustment of interactive participants

- Repair in Vietnamese conversations not only have similarities but also have specific features with repair in other languages.

12. Practical applicability, if any:

The study of repair in Vietnamese conversational will provide a theoretical basis for receiving speech and decoding the utterances of the interlocutor for the participants in the communication so that the interaction can take place efficiently and without interruption.

The thesis also has practical significance in language teaching (teaching mother tongue and teaching foreign languages). The detailed analysis and description of the structure and function of repair in Vietnamese conversational will provide teachers and learners with appropriate strategies when a "trouble source" arises correction, clarification. That contributes to the process of imparting and receiving knowledge most effectively.

13. Further research direction, if any:

- Functions of repair: Basically, most of the repair are made with the function of explaining and clarifying to ensure that the conversational interaction process is not interrupted by  trouble sources arising in the process of speaking, listening and understanding. However, in addition to the function of explaining, clarifying and editing, it is also performed with many other pragmatic functions. We will come back to study more about the pragmatic functions of repair in future.

- The impact of social factors on the use of repair in Vietnamese conversation.

14. Thesis-related publications:

1. Tran Thuy An (2022), "Initiation of repairs within the other initiated - self repair exchange in Vietnamese conversation", Language (6), pp. 58-70.

2. Vu Thi Thanh Huong, Tran Thuy An (2018), "Teacher-initiated and student-repaired exchanges in primary classroom discourse (Survey of grades 1 - 2 in J'rai areas in Gia Lai province", Language (12), pp. 27-41.

3. Tran Thuy An (2019), "The repair itself in the other-initiated, self-repair in Vietnamese conversation", Proceedings of the 2019 conference on Vietnamese language in the context of exchange, integration and development, Dan Tri Publishing House, pp. 12-20.

4. Sidnell. J, Tran Thuy An , Vu Thi Thanh Huong(2020), “On the division of intersubjective labor in interaction: A preliminary study of other-initiated repair in Vietnamese conversation”, Journal of the Southeast Asian Linguistics Society (6), pp. 65-84.

5. Tran Thuy An (2022), "The self initiated - self repair (after the trouble - source turn)", Language (1), tr. 69-80.

6. Tran Thuy An (2022), "The other-initiated, other-repair in Vietnamese conversation", Proceedings of the 2022 National Conference on Linguistics Issues, Social sciences Publishing House, pp. 11-26