國立虎尾科技大學 |

Development of Fluency, Complexity, and Accuracy in Second Language Oral Proficiency : = A Longitudinal Study of Two International Teaching Assistants in the U.S.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Development of Fluency, Complexity, and Accuracy in Second Language Oral Proficiency :/
其他題名:	A Longitudinal Study of Two International Teaching Assistants in the U.S.
作者:	Zhang, Qiusi.
面頁冊數:	1 online resource (129 pages)
附註:	Source: Dissertations Abstracts International, Volume: 85-05, Section: B.
Contained By:	Dissertations Abstracts International85-05B.
標題:	Study abroad. -
電子資源:	click for full text (PQDT)
ISBN:	9798380725545

Development of Fluency, Complexity, and Accuracy in Second Language Oral Proficiency : = A Longitudinal Study of Two International Teaching Assistants in the U.S.
Zhang, Qiusi.

Development of Fluency, Complexity, and Accuracy in Second Language Oral Proficiency :A Longitudinal Study of Two International Teaching Assistants in the U.S. - 1 online resource (129 pages)

Source: Dissertations Abstracts International, Volume: 85-05, Section: B.

Thesis (Ph.D.)--Purdue University, 2023.

Includes bibliographical references

This longitudinal case study investigated the developmental trajectories of two participants enrolled in an ITA oral communication course at Purdue University. The course provides language support to the ITA population who play a crucial role in higher education programs in the U.S. (Gorsuch, 2016). Over four months (i.e., one semester), I collected speech data from participants' responses to different tasks across 14 weeks and surveyed their weekly practice and goals. The multi-dimensional construct of L2 oral proficiency was assessed by eight large- and fine-grained variables representing various subdimensions of fluency, complexity, and accuracy (CAF, Skehan, 1998), including speed fluency (Articulation Rate & Mean Length of Run), breakdown fluency (Mid-unit Silent Pause Duration & Filled Pause Rate), repair fluency (Repair Rate), syntactic complexity (Mean Length of AS-unit), lexical diversity (vocd-D), and accuracy (Error Rate). Dynamic Systems Theory (DST) methods were employed to visualize trends over time (Lowess trend lines, moving min-max graphs), and correlation analyses (Kendall's Tau for small sample size and moving correlations) were performed to examine both general and local interactions between CAF dimensions and subdimensions.Results showed noticeable improvement in the L2 oral proficiency of both participants, though the extent of progress varied. Andy, an intermediate learner, improved in breakdown/ repair fluency and accuracy, but not in speed and syntactic/lexical complexity. Zach, an intermediate-toadvanced learner, demonstrated progress in almost all CAF subdimensions except for repair fluency. Several noteworthy findings emerged from the study. First, both participants made noticeable gains in accuracy, which can be attributed to formal instruction. Second, the participants exhibited stabilization or regression in speed instead of progress, which may be a strategic allocation of attention and linguistic resources towards more important aspects such as smoothness (represented by mean length of run, (Lennon, 1990)) and accuracy. Thirdly, gains in complexity were observed only in the more advanced learner, suggesting a potential sequence of acquisition. Improving syntactic and lexical complexity may require a certain level of oral proficiency mastery, and both may be compromised in productions by lower-level students like Andy, whose lexical diversity even decreased over time. Fourthly, observed gains aligned well with semester goals and weekly practices, highlighting the importance of goal setting and practices in language learning. Lastly, more significant correlations between CAF subdimensions were observed in Andy, supporting the limited attentional capacity hypothesis (Skehan, 2014). Additionally, dynamics relationships between CAF were observed for the participants, both in strength and direction. Interestingly, Andy's shift in the relationship between accuracy and speed fluency from competitive to supportive, indicating development.The study is the first attempt to investigate the development of all CAF dimensions from a DST perspective within the context of an ITA program. As an exploratory endeavor, it offers valuable and detailed insights into the L2 speech learning process of two learners within a particular, local setting. These findings have implications for larger-scale group studies in the field of L2 acquisition, as well as for classroom teaching, assessment, and program evaluation within ITA support programs.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798380725545Subjects--Topical Terms:

1339629
Study abroad.
Index Terms--Genre/Form:

554714
Electronic books.

Development of Fluency, Complexity, and Accuracy in Second Language Oral Proficiency : = A Longitudinal Study of Two International Teaching Assistants in the U.S.
LDR:04944ntm a22004097 4500 001 1143658
005 20240517104623.5
006 m o d
007 cr mn ---uuuuu
008 250605s2023 xx obm 000 0 eng d
020 $a 9798380725545
035 $a (MiAaPQ)AAI30685496
035 $a (MiAaPQ)Purdue23737599
035 $a AAI30685496
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Zhang, Qiusi. $3 1468412
245 1 0 $a Development of Fluency, Complexity, and Accuracy in Second Language Oral Proficiency : $b A Longitudinal Study of Two International Teaching Assistants in the U.S.
264 0 $c 2023
300 $a 1 online resource (129 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 85-05, Section: B.
500 $a Advisor: Ginther, April.
502 $a Thesis (Ph.D.)--Purdue University, 2023.
504 $a Includes bibliographical references
520 $a This longitudinal case study investigated the developmental trajectories of two participants enrolled in an ITA oral communication course at Purdue University. The course provides language support to the ITA population who play a crucial role in higher education programs in the U.S. (Gorsuch, 2016). Over four months (i.e., one semester), I collected speech data from participants' responses to different tasks across 14 weeks and surveyed their weekly practice and goals. The multi-dimensional construct of L2 oral proficiency was assessed by eight large- and fine-grained variables representing various subdimensions of fluency, complexity, and accuracy (CAF, Skehan, 1998), including speed fluency (Articulation Rate & Mean Length of Run), breakdown fluency (Mid-unit Silent Pause Duration & Filled Pause Rate), repair fluency (Repair Rate), syntactic complexity (Mean Length of AS-unit), lexical diversity (vocd-D), and accuracy (Error Rate). Dynamic Systems Theory (DST) methods were employed to visualize trends over time (Lowess trend lines, moving min-max graphs), and correlation analyses (Kendall's Tau for small sample size and moving correlations) were performed to examine both general and local interactions between CAF dimensions and subdimensions.Results showed noticeable improvement in the L2 oral proficiency of both participants, though the extent of progress varied. Andy, an intermediate learner, improved in breakdown/ repair fluency and accuracy, but not in speed and syntactic/lexical complexity. Zach, an intermediate-toadvanced learner, demonstrated progress in almost all CAF subdimensions except for repair fluency. Several noteworthy findings emerged from the study. First, both participants made noticeable gains in accuracy, which can be attributed to formal instruction. Second, the participants exhibited stabilization or regression in speed instead of progress, which may be a strategic allocation of attention and linguistic resources towards more important aspects such as smoothness (represented by mean length of run, (Lennon, 1990)) and accuracy. Thirdly, gains in complexity were observed only in the more advanced learner, suggesting a potential sequence of acquisition. Improving syntactic and lexical complexity may require a certain level of oral proficiency mastery, and both may be compromised in productions by lower-level students like Andy, whose lexical diversity even decreased over time. Fourthly, observed gains aligned well with semester goals and weekly practices, highlighting the importance of goal setting and practices in language learning. Lastly, more significant correlations between CAF subdimensions were observed in Andy, supporting the limited attentional capacity hypothesis (Skehan, 2014). Additionally, dynamics relationships between CAF were observed for the participants, both in strength and direction. Interestingly, Andy's shift in the relationship between accuracy and speed fluency from competitive to supportive, indicating development.The study is the first attempt to investigate the development of all CAF dimensions from a DST perspective within the context of an ITA program. As an exploratory endeavor, it offers valuable and detailed insights into the L2 speech learning process of two learners within a particular, local setting. These findings have implications for larger-scale group studies in the field of L2 acquisition, as well as for classroom teaching, assessment, and program evaluation within ITA support programs.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Study abroad. $3 1339629
650 4 $a Goal setting. $3 1468413
650 4 $a Higher education. $3 1148448
650 4 $a Language acquisition. $3 554986
650 4 $a Writing. $3 561099
650 4 $a Memory. $3 555749
650 4 $a Verbal communication. $3 1466370
650 4 $a Speaking. $3 1466441
650 4 $a System theory. $3 566168
650 4 $a Skills. $3 1207328
650 4 $a Classrooms. $3 859839
650 4 $a Second language learning. $3 1465858
650 4 $a Teaching assistants. $3 1468414
650 4 $a Linguistics. $3 557829
650 4 $a Speech. $3 566021
650 4 $a Graduate students. $3 784838
650 4 $a Bilingual education. $3 1148431
650 4 $a Communication. $3 556422
650 4 $a Education. $3 555912
650 4 $a Foreign language instruction. $3 1241370
650 4 $a Language. $3 571568
650 4 $a Systems science. $3 1148479
655 7 $a Electronic books. $2 local $3 554714
690 $a 0290
690 $a 0745
690 $a 0282
690 $a 0459
690 $a 0515
690 $a 0444
690 $a 0679
690 $a 0790
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Purdue University. $3 1184550
773 0 $t Dissertations Abstracts International $g 85-05B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30685496 $z click for full text (PQDT)