Diving Deep Into the Relationship Between Speech Fluency and Second Language Proficiency: A Meta‐Analysis
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Abundant research has indicated fluency features as meaningful predictors of second language proficiency. However, the extent to which different fluency dimensions and features can predict proficiency remains underexplored. This meta‐analysis employed a multilevel modeling approach to synthesize fluency–proficiency relationships from 71 empirical studies from 1959–2023. Additionally, we examined several moderator variables, including task type, learning context, age, and proficiency measure. The correlations found were strongly positive for speed ( r = .55), moderately positive for productivity ( r = .38), moderately negative for breakdown ( r = −.33), and weakly negative for repair ( r = −.11). Moderator analyses revealed that task, learning context, and proficiency measure influence fluency–proficiency relationships in the repair, productivity, and speed dimensions, respectively. Post hoc analyses also suggested that the operationalization of breakdown features might make a difference in fluency–proficiency relationships. This study has both theoretical and methodological implications for second language fluency research.
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L2 speech fluency research generally points to higher fluency for higher proficiency level participants.
“results generally pointing to higher fluency for higher proficiency level participants (e.g., Kormos & Dénes, 2004;Tavakoli et al., 2020; for a meta-analysis, see Yan et al., 2025).”
From The impact of L1 speaking style, task mode, and L2 proficiency on L2 fluency: A within-subject study of monologic and dialogic speech (2025) · cites this paper as Yan et al., 2025
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Using uh and um in spontaneous speaking
Clark, H. (2002) · Cognition · doi:10.1016/s0010-0277(02)00017-3 · Cited by 1,235 · see citing works
Exploring measures and perceptions of fluency in the speech of second language learners
Kormos, J., & Dénes (2004) · System · doi:10.1016/j.system.2004.01.001 · Cited by 679 · see citing works
Fluency in Second Language Testing: Insights From Different Disciplines
De Jong, N. H. (2018) · Language Assessment Quarterly · doi:10.1080/15434303.2018.1477780 · Cited by 139 · see citing works
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Research works printed but not linked: 63
- Berman, R., & Verhoeven, L. (2002). Cross-linguistic perspectives on the development of text-production abilities: Speech and writing. Written Language & Literacy, 5(1), 1-43. https://doi.org/10.1075/wll.5.1.02ber 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 · DOI
- Bosker, H. R., Quené, H., Sanders, T., & De Jong, N. H. (2014). Native 'um's elicit prediction of low-frequency referents, but non-native 'um's do not. Journal of Memory and Language, 75, 104-116. http://doi.org/10.1016/j.jml.2014.05.004 · DOI
- Chambers, F. (1997). What do we mean by fluency? System, 25(4), 535-544. https://doi.org/10.1016/S0346-251X(97)00046-8 · DOI
- Chen, H. C. (2011). An acoustic analysis of intra-sentential pause patterns by Taiwanese learners of English. Hong Kong Journal of Applied Linguistics, 13(1), 77-94. 1085 Language Learning 75:4, December 2025, pp. 1051-1090 14679922, 2025, 4, · DOI
- Cheng, L. (2014). Effects of pragmatic task features, English proficiency, and learning setting on Chinese ESL/EFL spoken performance of requests. [Doctoral dissertation, Purdue University]. Purdue e-Pubs. https://docs.lib.purdue.edu/dissertations/AAI3668776
- Cucchiarini, C., Strik, H., & Boves, L. (2002). Quantitative assessment of second language learners' fluency: Comparisons between read and spontaneous speech. The Journal of the Acoustical Society of America, 111(6), 2862-2873. https://doi.org/10.1121/1.1471894 · DOI
- De Jong, N. H., & Bosker, H. R. (2013). Choosing a threshold for silent pauses to measure second language fluency. In R. Eklund (Ed.), Proceedings of the 6th Workshop on Disfluency in Spontaneous Speech (DiSS) (pp. 17-20).
- 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 · DOI
- 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 · DOI
- Dewaele, J. M., Housen, A., & Wei, L. (Eds.), (2003). Bilingualism: Beyond basic principles. Multilingual Matters. https://doi.org/10.21832/9781853596315 · DOI
- Dimova, S., Yan, X., & Ginther, A. (2020). Local language testing: Design, implementation, and development. Routledge. https://doi.org/10.4324/9780429492242 · DOI
- Dimova, S., Yan, X., & Ginther, A. (2022). Local tests, local contexts. Language Testing, 39(3), 341-354. https://doi.org/10.1177/02655322221092392 · DOI
- Eren, Ö., Kılıç, M., & Bada, E. (2022). Fluency in L2: read and spontaneous speech pausing patterns of Turkish, Swahili, Hausa and Arabic Speakers of English. Journal of Psycholinguistic Research, 51(2), 237-253. https://doi.org/10.1007/s10936-021-09822-y · DOI
- 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 · DOI · Paper page
- 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 Language Learning 75:4, December 2025, pp. 1051-1090 1086 14679922, 2025, 4, · DOI
- Götz, S. (2013). Fluency in native and nonnative English speech. John Benjamins. https://doi.org/10.1075/scl. · DOI
- Higgins, J. P., & Thompson, S. G. (2002). Quantifying heterogeneity in a meta-analysis. Statistics in Medicine, 21(11), 1539-1558. https://doi.org/10.1002/sim.1186 · DOI · Paper page
- Hox, J. J., Moerbeek, M., & van de Schoot, R. (2018). Multilevel analysis: Techniques and applications (3rd ed.). Routledge. https://doi.org/10.4324/9781315650982 · DOI
- Hsieh, C. N., & Wang, Y. (2019). Speaking proficiency of young language students: A discourse-analytic study. Language Testing, 36(1), 27-50. https://doi.org/10.1177/0265532217734240 · DOI
- Iwashita, N., Brown, A., McNamara, T., & O'Hagan, S. (2008). Assessed levels of second language speaking proficiency: How distinct? Applied Linguistics, 29(1), 24-49. https://doi.org/10.1093/applin/amm017 · DOI
- Jackson, D. O., & Suethanapornkul, S. (2013). The cognition hypothesis: A synthesis and meta-analysis of research on second language task complexity. Language Learning, 63(2), 330-367. https://doi.org/10.1111/lang.12008 · DOI
- Kahng, J. (2014). Exploring utterance and cognitive fluency of L1 and L2 English speakers: Temporal measures and stimulated recall. Language Learning, 64(4), 809-854. https://doi.org/10.1111/lang.12084 · DOI · Paper page
- Kahng, J. (2018). The effect of pause location on perceived fluency. Applied Psycholinguistics, 39(3), 569-591. https://doi.org/10.1017/S0142716417000534 · DOI · Paper page
- 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 · DOI · Paper page
- Kowal, S., O'Connell, D. C., & Sabin, E. J. (1975). Development of temporal patterning and vocal hesitations in spontaneous narratives. Journal of Psycholinguistic Research, 4(3), 195-207. https://doi.org/10.1007/BF01066950 · DOI
- Lei, Y. (2021). Investigating oral performance on controlled versus spontaneous speaking tasks: Implications for second language pedagogy and assessment [Doctoral dissertation, University of Illinois Urbana-Champaign]. IDEALS [institutional repository]. https://www.ideals.illinois.edu/items/121080
- Lei, Y., & Yan, X. (2022). An exploratory study of strategy use on elicited imitation tasks. Frontiers in Psychology, 13, Article 917168. https://doi.org/10.3389/fpsyg.2022.917168 1087 Language Learning 75:4, December 2025, pp. 1051-1090 14679922, 2025, 4, · DOI
- Lennon, P. (1990). Investigating fluency in EFL: A quantitative approach. Language Learning, 40(3), 387-417. https://doi.org/10.1111/j.1467-1770.1990.tb00669.x · DOI
- Levelt, W. J. M. (1989). Speaking: From intention to articulation. MIT Press.
- Lundell, F. F., Bartning, I., Engel, H., Gudmundson, A., Hancock, V., & Lindqvist, C. (2014). Beyond advanced stages in high-level spoken L2 French. Journal of French Language Studies, 24(2), 255-280. https://doi.org/10.1017/S0959269513000057 · DOI
- Maclay, H., & Osgood, C. E. (1959). Hesitation phenomena in spontaneous English speech. Word, 15(1), 19-44. https://doi.org/10.1080/00437956.1959.11659682 · DOI
- Malone, M. E., Rifkin, B., Christian, D., & Johnson, D. E. (2003, January 23-25). Attaining high levels of proficiency: Challenges for language education in the United States [Paper presentation]. Conference on Global Challenges and US Higher Education, Duke University, Durham, NC, United States.
- Nip, I. S., & Green, J. R. (2013). Increases in cognitive and linguistic processing primarily account for increases in speaking rate with age. Child Development, 84(4), 1324-1337. https://doi.org/10.1111/cdev.12052 · DOI
- Nippold, M. A., Frantz-Kaspar, M. W., & Vigeland, L. M. (2017). Spoken language production in young adults: Examining syntactic complexity. Journal of Speech, Language, and Hearing Research, 60(5), 1339-1347. https://doi.org/10.1044/2016_JSLHR-L-16-0124 · DOI
- Orwin, R. G. (1983). A fail-safe N for effect size in meta-analysis. Journal of Educational Statistics, 8(2), 157-159. https://doi.org/10.3102/10769986008002157 · DOI
- Park, H. I., Solon, M., Dehghan-Chaleshtori, M., & Ghanbar, H. (2022). Proficiency reporting practices in research on second language acquisition: Have we made any progress? Language Learning, 72(1), 198-236. https://doi.org/10.1111/lang.12475 · DOI
- Plonsky, L., & Derrick, D. J. (2016). A meta-analysis of reliability coefficients in second language research. The Modern Language Journal, 100(2), 538-553. https://doi.org/10.1111/modl.12335 · DOI
- Plonsky, L., & Oswald, F. L. (2014). How big is "big"? Interpreting effect sizes in L2 research. Language Learning, 64(4), 878-912. https://doi.org/10.1111/lang.12079 · DOI · Paper page
- Révész, A. (2014). Towards a fuller assessment of cognitive models of task-based learning: Investigating task-generated cognitive demands and processes. Applied Linguistics, 35(1), 87-92. https://doi.org/10.1093/applin/amt039 · DOI
- Robinson, P. (2001). Task complexity, task difficulty, and task production: Exploring interactions in a componential framework. Applied Linguistics, 22(1), 27-57. https://doi.org/10.1093/applin/22.1.27 · DOI · Paper page
- Rosenthal, R. (1979). The file drawer problem and tolerance for null results. Psychological Bulletin, 86(3), 638-641. https://doi.org/10.1037/0033-2909.86.3.638 · DOI · Paper page
- Segalowitz, N. (2010). Cognitive bases of second language fluency. Routledge. https://doi.org/10.4324/9780203851357 · DOI · Paper page
- Segalowitz, N., & Freed, B. F. (2004). Context, contact, and cognition in oral fluency acquisition: Learning Spanish in at home and study abroad contexts. Studies in Language Learning 75:4, December 2025, pp. 1051-1090 1088 14679922, 2025, 4, Second Language Acquisition, 26(2), 173-199. https://doi.org/10.1017/S0272263104262027 · DOI
- Segalowitz, N., & Hulstijn, J. (2005). Automaticity in second language learning. In J. F. Kroll & A. M. B. De Groot (Eds.), Handbook of bilingualism: Psycholinguistic approaches (pp.371-388). Oxford University Press.
- Skehan, P. (1998). A cognitive approach to language learning. Oxford University Press. https://doi.org/10.1177/003368829802900209 · DOI
- Skehan, P. (2003). Task-based instruction. Language Teaching, 36(1), 1-14. https://doi.org/10.1017/S026144480200188X · DOI
- Skehan, P., & Foster, P. (2008). Complexity, accuracy, fluency and lexis in task-based performance: A meta-analysis of the Ealing research. In S. Van Daele, A. Housen, F. Kuiken, M. Pierrard, & I. Vedder (Eds.), Complexity, accuracy, and fluency in second language use, learning, & teaching (pp. 207-226). Brussels: Contactforum.
- Spolsky, B. (1989). Communicative competence, language proficiency, and beyond. Applied Linguistics, 10(2), 138-156. https://doi.org/10.1093/applin/10.2.138 · DOI
- Sturm, J. A., & Seery, C. H. (2007). Speech and articulatory rates of school-age children in conversation and narrative contexts. Language, Speech, and Hearing Services in Schools, 38, 47-59. https://doi.org/10.1044/0161-1461(2007/005) · DOI
- 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 · DOI
- 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 · DOI
- Tavakoli, P. (2016). Fluency in monologic and dialogic task performance: Challenges in defining and measuring L2 fluency. International Review of Applied Linguistics in Language Teaching, 54(2), 133-150. https://doi.org/10.1515/iral-2016-9994 · DOI · Paper page
- Tavakoli, P., & Hunter, A. M. (2018). Is fluency being 'neglected' in the classroom? Teacher understanding of fluency and related classroom practices. Language Teaching Research, 22(3), 330-349. https://doi.org/10.1177/1362168817708462 · DOI · Paper page
- 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 · DOI · Paper page
- Tullock, B., & Ortega, L. (2017). Fluency and multilingualism in study abroad: Lessons from a scoping review. System, 71, 7-21. https://doi.org/10.1016/j.system.2017.09.019 · DOI
- Viechtbauer, W. (2010). Conducting meta-analyses in R with the metafor package. Journal of Statistical Software, 36(3), 1-48. https://doi.org/10.18637/jss.v036.i03 · DOI · Paper page
- Wright, C. (2020). Effects of task type on L2 Mandarin fluency development. Journal of Second Language Studies, 3(2), 157-179. https://doi.org/10.1075/jsls.00010. · DOI
- wri · DOI
- Yan, X., Kim, H. R., & Kim, J. Y. (2021). Dimensionality of speech fluency: Examining the relationships among complexity, accuracy, and fluency (CAF) 1089 Language Learning 75:4, December 2025, pp. 1051-1090 14679922, 2025, 4, features of speaking performances on the Aptis test. Language Testing, 38(4), 485-510. https://doi.org/10.1177/0265532220951508 · DOI
- Yan, X., Lei, Y., & Shih, C. (2020). A corpus-driven, curriculum-based Chinese elicited imitation test in US universities. Foreign Language Annals, 53(4), 704-732. https://doi.org/10.1111/flan.12492 · DOI
- Yan, X., Lei, Y., & Shih, C. (2024). Are textbooks authentic from a developmental perspective? A corpus analysis of word use in Chinese textbooks in US universities. Applied Linguistics, 45(5), 849-872. https://doi.org/10.1093/applin/amad073 · DOI
- Yan, X., Maeda, Y., Lv, J., & Ginther, A. (2016). Elicited imitation as a measure of second language proficiency: A narrative review and meta-analysis. Language Testing, 33(4), 497-528. https://doi.org/10.1177/0265532215594643 · DOI
- Youn, S. J. (2015). Validity argument for assessing L2 pragmatics in interaction using mixed methods. Language Testing, 32(2), 199-225. https://doi.org/10.1177/0265532214557113 · DOI
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Peltonen, P., Götz, S., & Lintunen, P. (2025) · Studies in Second Language Acquisition · doi:10.1017/s0272263125101289 · Cited by 1 · see citing works
“…research exploring how different aspects of fluency levels develop as the learners ’ proficiency level increases, results generally pointing to higher fluency for higher proficiency level participants (e.g., Kormos & Dénes, 2004; Tavakoli et al., 2020; for a meta-analysis, see Yan et al., 2025).”
- Authors
- Yan, X., Lei, Y., & Pan, Y.
- Affiliations
- University of Illinois Urbana-Champaign (US)
- Western Kentucky University (US)
- Corresponding author
- Yan, Xun
- ORCID
- Venue
- Language Learning
- Publisher
- Wiley
- Published
- 2025-01-12
- Volume
- 75
- Issue
- 4
- Pages
- 1051-1090
- ISSN
- 0023-8333 (ISSN-L)
- 1467-9922
- OpenAlex
- W4406306914
- Cited by
- 13
- References
- 3
- Citations by year
- 2026: 7 · 2025: 6
- FWCI
- 46.43
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Language Learning (publishedVersion, cc-by-nc-nd)
- 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 fluency, second language proficiency, speech rate, productivity, breakdown, repair, task type, learning context, age of onset
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