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Cited by 10EFL/ESL Teaching and LearningSecond Language Acquisition and LearningPhonetics and Phonology Research

The moderating role of L2 proficiency in the predictive power of L1 fluency on L2 utterance fluency

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Suzuki, Shungo, Kormos, Judit·2025·Language Testing
DOI 10.1177/02655322241241851
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Abstract

The current study examined the extent to which first language (L1) utterance fluency measures can predict second language (L2) fluency and how L2 proficiency moderates the relationship between L1 and L2 fluency. A total of 104 Japanese-speaking learners of English completed different argumentative speech tasks in their L1 and L2. Their speaking performance was analysed using measures of speed, breakdown, and repair fluency. L2 proficiency was operationalised as cognitive fluency. Two factor scores of cognitive fluency—linguistic resources and processing speed—were computed based on performance in a set of linguistic knowledge tests capturing vocabulary knowledge, morphosyntactic processing, and articulatory skills. A series of generalised linear mixed-effects models revealed small-to-moderate effect sizes for the predictive power of L1 utterance fluency measures on their L2 counterparts. Moderator effects of L2 proficiency were found only in speed fluency measures. The relationship between L1 and L2 speed fluency was weaker for L2 learners with wider L2 linguistic resources. Conversely, for those with faster L2 processing speed, the L1-L2 link tended to be stronger. These findings indicate that the L1-L2 fluency link is subject to the complex interplay of phonological differences between learners’ L1 and L2 and their L2 proficiency, offering implications for diagnostic speaking assessment.

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References 50 · Cited by 10

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  1. Bates D., Mächler M., Bolker B., Walker S. (2015). Fitting linear mixed-effects models using lme4. Journal of Statistical Software, 67(1), 1–48. https://doi.org/10.18637/jss.v067.i01 · DOI · Paper page
  2. Bosker H. R., Pinget A.-F., Quené H., Sanders T., de Jong N. H. (2013). What makes speech sound fluent? The contributions of pauses, speed and repairs. Language Testing, 30(2), 159–175. https://doi.org/10.1177/0265532212455394 a [...] collinearity with other UF measures (see b [...] ). Following prior research (e.g., · DOI
  3. Bradlow A. R., Kim M., Blasingame M. (2017). Language-independent talker-specificity in first-language and second-language speech production by bilingual talkers: L1 speaking rate predicts L2 speaking rate. The Journal of the Acoustical Society of America, 141(2), 886–899. https://doi.org/10.1121/1.4976044 a [...] the association between L1 and L2 UF (e.g., b [...] UF link is cross-linguistically robust c [...] robust in speaking rate measures d [...] the strength of the L1-L2 UF association. e [...] well as their cross-linguistic robustness f [...] as articulation rate and speech rate (see · DOI
  4. Coupé C. (2018). Modeling linguistic variables with regression models: Addressing non-Gaussian distributions, non-independent observations, and non-linear predictors with random effects and generalized additive models for location, scale, and shape. Frontiers in Psychology, 9, 1–21. https://doi.org/10.3389/fpsyg.2018.00513 · DOI
  5. de Bot K. (1992). A bilingual production model: Levelt’s speaking model adapted. Applied Linguistics, 13, 1–24. https://doi.org/10.1093/applin/13.1.1 · DOI
  6. De Jong N. H. (2016). Predicting pauses in L1 and L2 speech: The effects of utterance boundaries and word frequency. International Review of Applied Linguistics in Language Teaching, 54(2), 113–132. https://doi.org/10.1515/iral-2016-9993 a [...] language systems within individuals b [...] and location (mid- vs. end-clause pauses) c [...] frequently than in the middle of utterances d [...] end-clause pauses are supposed to reflect · DOI
  7. De Jong N. H., Groenhout R., Schoonen R., Hulstijn J. H. (2015). Second language fluency: Speaking style or proficiency? Correcting measures of second language fluency for first language behavior. Applied Psycholinguistics, 36(2), 223–243. https://doi.org/10.1017/S0142716413000210 a [...] the association between L1 and L2 UF (e.g., b [...] has been found to be either moderate c [...] De Jong et al. (2015) d [...] correlations between L1 and L2 speech e [...] measures tend to be moderate to strong f [...] are L1 and L2 mid-clause pause duration g [...] frequency and self-correction frequency h [...] a strong effect size was reported in i [...] through obtaining vocabulary size estimates j [...] in speed and breakdown fluency (e.g., k [...] the L1-L2 UF link in filled pause frequency l [...] ) and self-repetition frequency m [...] between the measures in L1 and L2 speech n [...] behaviour on its L2 counterpart o [...] starts, compared with previous studies (see p [...] valid assessment of L2 oral proficiency q [...] In addition, following previous studies · DOI
  8. De Jong N. H., Mora J. C. (2019). Does having good articulatory skills lead to more fluent speech in first and second languages? Studies in Second Language Acquisition, 41(1), 227–239. https://doi.org/10.1017/S0272263117000389 a [...] the association between L1 and L2 UF (e.g., d [...] De Jong & Mora (2019) e [...] measures tend to be moderate to strong g [...] through obtaining vocabulary size estimates h [...] between the measures in L1 and L2 speech · DOI
  9. De Jong N. H., Steinel M. P., Florijn A., Schoonen R., Hulstijn J. H. (2013). Linguistic skills and speaking fluency in a second language. Applied Psycholinguistics, 34(5), 893–916. https://doi.org/10.1017/S0142716412000069 a [...] linguistic knowledge and competence b [...] of cognitive fluency to UF performance c [...] assumptions and empirical studies of CF d [...] retrieval speed (picture naming task; e [...] the high predictive power to UF performance · DOI
  10. Derwing T. M., Munro M. J., Thomson R. I., Rossiter M. J. (2009). The relationship between L1 fluency and L2 fluency development. Studies in Second Language Acquisition, 31(4), 533–557. https://doi.org/10.1017/S0272263109990015 a [...] fluency can be moderated by L2 proficiency b [...] Derwing et al. (2009) c [...] languages, such as Slavic languages e [...] as through examining longitudinal changes f [...] between L1 and L2 fluency measures. g [...] and L2 proficiency in the L1-L2 UF link h [...] decrease as a function of L2 proficiency · DOI · Paper page
  11. Dörnyei Z., Kormos J. (1998). Problem-solving mechanisms in L2 communication: A psycholinguistic perspective. Studies in Second Language Acquisition, 20(3), 349–385. https://doi.org/10.1017/S0272263198003039 · DOI
  12. Duran-Karaoz Z., Tavakoli P. (2020). Predicting L2 fluency from L1 fluency behavior. Studies in Second Language Acquisition, 42(4), 671–695. https://doi.org/10.1017/S0272263119000755 a [...] Duran-Karaoz & Tavakoli (2020) b [...] the sake of the validity of classification c [...] ), and Turkish d [...] ), using standardised test scores e [...] the L1-L2 UF link in filled pause frequency f [...] In addition, following previous studies · DOI · Paper page
  13. Foster P., Tonkyn A., Wigglesworth G. (2000). Measuring spoken language: A unit for all reasons. Applied Linguistics, 21(3), 354–375. https://doi.org/10.1093/applin/21.3.354 a [...] within the analysis of speech units; cf. b [...] for the subsequent unit of ideas (cf. · DOI
  14. Fraundorf S. H., Watson D. G. (2014). Alice’s adventures in um-derland: Psycholinguistic sources of variation in disfluency production. Language, Cognition and Neuroscience, 29(9), 1083–1096. https://doi.org/10.1080/01690965.2013.832785 · DOI
  15. Gagné N., French L. M., Hummel K. M. (2022). Investigating the contribution of L1 fluency, L2 initial fluency, working memory and phonological memory to L2 fluency development. Language Teaching Research. https://doi.org/10.1177/13621688221076418 · DOI
  16. Gao J., Sun P. P. (2024). How does learners’ L2 utterance fluency relate to their L1? A meta-analysis. International Journal of Applied Linguistics, 34(1), 276–291. https://doi.org/10.1111/ijal.12493 a [...] speaking tasks, than in closed ones (cf. b [...] Gao & Sun (2024) c [...] ), using standardised test scores d [...] ). Meanwhile, e [...] of L2 speech-specific competence (cf. · DOI · Paper page
  17. Gilbert A. C., Cousineau-Perusse M., Titone D. (2020). L2 exposure modulates the scope of planning during first and second language production. Bilingualism: Language and Cognition, 23(5), 1093–1105. https://doi.org/10.1017/S1366728920000115 a [...] starting to speak (i.e., scope of planning; b [...] plan their utterances before speaking (see · DOI
  18. Ginther A., Dimova S., Yang R. (2010). Conceptual and empirical relationships between temporal measures of fluency and oral English proficiency with implications for automated scoring. Language Testing, 27(3), 379–399. https://doi.org/10.1177/0265532210364407 · DOI
  19. Godfroid A., Loewen S., Jung S., Park J. H., Gass S., Ellis R. (2015). Timed and untimed grammaticality judgments measure distinct types of knowledge: Evidence from eye-movement patterns. Studies in Second Language Acquisition, 37(2), 269–297. https://doi.org/10.1017/S0272263114000850 a [...] (timed grammaticality judgement test; b [...] (timed grammaticality judgement test; · DOI
  20. Huensch A., Tracy-Ventura N. (2017). Understanding second language fluency behavior: The effects of individual differences in first language fluency, cross-linguistic differences, and proficiency over time. Applied Psycholinguistics, 38(4), 755–785. https://doi.org/10.1017/S0142716416000424 a [...] has been found to be either moderate b [...] Huensch & Tracy-Ventura (2017) c [...] measures tend to be moderate to strong d [...] are L1 and L2 mid-clause pause duration e [...] frequency and self-correction frequency f [...] L1 and L2, and learners’ L2 proficiency g [...] as through examining longitudinal changes h [...] moderate-to-strong effect sizes. Similarly, i [...] learners’ L2 proficiency (for a review, see j [...] or fluency-related processing skills k [...] in speed and breakdown fluency (e.g., l [...] ) and self-repetition frequency m [...] between the measures in L1 and L2 speech n [...] behaviour on its L2 counterpart o [...] starts, compared with previous studies (see p [...] of their L1. This finding is in line with q [...] and L2 proficiency in the L1-L2 UF link · DOI
  21. Kahng J. (2020). Explaining second language utterance fluency: Contribution of cognitive fluency and first language utterance fluency. Applied Psycholinguistics, 41(2), 457–480. https://doi.org/10.1017/S0142716420000065 a [...] linguistic knowledge and competence b [...] of cognitive fluency to UF performance c [...] the high predictive power to UF performance · DOI · Paper page
  22. Kormos J. (1999). Monitoring and self-repair in L2. Language Learning, 49(2), 303–342. https://doi.org/10.1111/0023-8333.00090 · DOI · Paper page
  23. Laufer B., Nation P. (1999). A vocabulary-size test of controlled productive ability. Language Testing, 16(1), 33–51. https://doi.org/10.1177/026553229901600103 · DOI
  24. Lee J. H. (2018). The effects of short-term study abroad on L2 anxiety, international posture, and L2 willingness to communicate. Journal of Multilingual and Multicultural Development, 39(8), 703–714. https://doi.org/10.1080/01434632.2018.1435666 · DOI
  25. Levelt W. J. M. (1989). Speaking: From intention to articulation. MIT Press. a [...] formulation, and articulation b [...] of the unit of conceptual planning
  26. Nakano M., Owada K., Ueda N., Oya M., Tsutsui E., Kondo Y., Yoshida S. (2011). Toward the development of standard skill description in language learning based on CEFR. JACET-KANTO Journal, 8, 48–59.
  27. Pallotti G. (2009). CAF: Defining, refining and differentiating constructs. Applied Linguistics, 30(4), 590–601. https://doi.org/10.1093/applin/amp045 · DOI
  28. Pavlenko A. (2009). Conceptual representation in the bilingual lexicon and second language vocabulary learning. In Pavlenko A. (Ed.), The bilingual mental lexicon: Interdisciplinary approaches (pp. 125–160). Multilingual Matters.
  29. Pellegrino F., Coupé C., Marsico E. (2011). Across-language perspective on speech information rate. Language, 87(3), 539–558. https://doi.org/10.1353/lan.2011.0057 a [...] language) and syllable complexity b [...] ). According to c [...] complexity and information density (cf. d [...] ratio, varying syllable length; cf. · DOI
  30. Peltonen P., Lintunen P. (2022). Multilingual speakers’ L1, L2, and L3 fluency across languages: A study of Finnish, Swedish, and English. Nordand, 17(1), 48–63. https://doi.org/10.1826 b [...] Peltonen & Lintunen (2022)
  31. Pérez Castillejo S., Urzua-Parra K. (2023). Predicting L2-Spanish fluency from L1-English fluency and L2 proficiency: A conceptual replication. Studies in Second Language Acquisition, 45(4), 1090–1103. https://doi.org/10.1017/S0272263122000535 a [...] Pérez Castillejo & Urzua-Parra (2023) b [...] or fluency-related processing skills · DOI · Paper page
  32. Plonsky L., Ghanbar H. (2018). Multiple regression in L2 Research: A methodological synthesis and guide to interpreting R2 values. The Modern Language Journal, 102(4), 713–731. https://doi.org/10.1111/modl.12509 · DOI
  33. Segalowitz N. (2010). Cognitive bases of second language fluency. Routledge. a [...] ). Following b [...] variance in assessment (see c [...] to fluency in L2 speech production d [...] assumptions and empirical studies of CF e [...] efficiency of speech production (cf. f [...] of fluency (i.e., perceived fluency; g [...] ) and L2 speech production models
  34. Segalowitz N. (2016). Second language fluency and its underlying cognitive and social determinants. International Review of Applied Linguistics in Language Teaching, 54(2), 79–95. https://doi.org/10.1515/iral-2016-9991 · DOI
  35. Slobin D. I. (1996). From “thought and language” to “thinking for speaking.” In Gumperz J. J., Levinson S. C. (Eds.), Rethinking linguistic relativity (pp. 70–96). Cambridge University Press.
  36. Suzuki S., Kormos J. (2020). Linguistic dimensions of comprehensibility and perceived fluency: An investigation of complexity, accuracy, and fluency in second language argumentative speech. Studies in Second Language Acquisition, 42(1), 143–167. https://doi.org/10.1017/S0272263119000421 · DOI
  37. Suzuki S., Kormos J. (2023). The multidimensionality of second language oral fluency: Interfacing cognitive fluency and utterance fluency. Studies in Second Language Acquisition, 45(1), 38–64. https://doi.org/10.1017/S0272263121000899 a [...] aspects (disfluency features) of fluency b [...] and manipulating linguistic knowledge; c [...] of cognitive fluency to UF performance d [...] from the results of our precursor study e [...] Our precursor study f [...] processing related to speech production g [...] details of score estimation procedures, see h [...] UF measures, which were adopted from i [...] for any of the tasks (for details, see j [...] the high predictive power to UF performance · DOI
  38. Suzuki S., Kormos J., Uchihara T. (2021). The relationship between utterance and perceived fluency: A meta-analysis of correlational studies. The Modern Language Journal, 105(2), 435–463. https://doi.org/10.1111/modl.12706 b [...] pauses was defined as 250 ms (see also · DOI
  39. Suzuki S., Révész A. (2023). Measuring speaking and writing fluency: A methodological synthesis focusing on automaticity. In Suzuki Y. (Ed.), Practice and automatization in second language research: Theory, methods, and pedagogical implications (pp. 247–266). Routledge. a [...] are considered to be language-specific b [...] collinearity with other UF measures (see
  40. Suzuki Y., Sunada M. (2018). Automatization in second language sentence processing: Relationship between elicited imitation and maze tasks. Bilingualism: Language and Cognition, 21(1), 32–46. https://doi.org/10.1017/S1366728916000857 a [...] ), syntactic encoding accuracy (Maze task; b [...] ), syntactic encoding speed (Maze task; · DOI
  41. Tavakoli P., Nakatsuhara F., Hunter A.-M. (2020). Aspects of fluency across assessed levels of speaking proficiency. The Modern Language Journal, 104(1), 169–191. https://doi.org/10.1111/modl.12620 a [...] a robust indicator of L2 oral proficiency b [...] mean duration of syllables · DOI · Paper page
  42. Tavakoli P., Skehan P. (2005). Strategic planning, task structure, and performance testing. In Ellis R. (Ed.), Planning and task performance in a second language (pp. 239–273). John Benjamins. a [...] aspects (disfluency features) of fluency b [...] breakdown fluency, and repair fluency
  43. Tavakoli P., Wright C. (2020). Second language speech fluency: From research to practice. Cambridge University Press.
  44. Tian Y., Maruyama T., Ginzburg J. (2017). Self addressed questions and filled pauses: A cross-linguistic investigation. Journal of Psycholinguistic Research, 46(4), 905–922. https://doi.org/10.1007/s10936-016-9468-5 a [...] have different norms for temporal features b [...] norm of temporal features in speech (e.g., · DOI
  45. Towell R., Dewaele J.-M. (2005). The role of psycholinguistic factors in the development of fluency. In Dewaele J.-M. (Ed.), Focus on French as a foreign language: Multidisciplinary approaches (pp. 210–239). Multilingual Matters.
  46. Vance T. J. (2008). The sounds of Japanese. Cambridge University Press. a [...] mora-timed language is Japanese b [...] at the position of onset of the syllable c [...] ratio, varying syllable length; cf.
  47. Williams S. A., Korko M. (2019). Pause behavior within reformulations and the proficiency level of second language learners of English. Applied Psycholinguistics, 40(3), 723–742. https://doi.org/10.1017/S0142716418000802 a [...] role in L1 and L2 speech production (see b [...] ), and false starts · DOI

Authors
Suzuki, S., & Kormos, J.
Affiliations
  • Waseda University (JP)
  • Lancaster University (GB)
Corresponding author
Suzuki, Shungo
ORCID
Venue
Language Testing
Publisher
SAGE Publications
Published
2024-04-16
Volume
42
Issue
1
Pages
73-99
ISSN
  • 0265-5322 (ISSN-L)
  • 1477-0946
DOI
10.1177/02655322241241851
OpenAlex
W4394887827
Cited by
10
References
50
Citations by year
2026: 5 · 2025: 3 · 2024: 2
FWCI
15.77
Type
journal article
Language
en
Open access
Licence
Locations
  • Language Testing (publishedVersion, cc-by-nc)
  • Lancaster EPrints (Lancaster University) (submittedVersion)
Funders
Japan Society for the Promotion of Science (Grant-in-Aid for Early-Career Scientists (22K13181)
Topics
  • Social Sciences › Arts and Humanities › Language and Linguistics › EFL/ESL Teaching and Learning
  • Social Sciences › Psychology › Developmental and Educational Psychology › Second Language Acquisition and Learning
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Phonetics and Phonology Research
Keywords
second language proficiency, processing fluency, language resources, processing speed, argumentative speech, phonological differences, speaking assessment

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