Investigating EFL Learners’ Production of Pre-Fortis Clipping in English at University Level

Investigating EFL Learners’ Production of Pre-Fortis Clipping in English at University Level

Section: Article
Published
Jan 1, 2026
Pages
1269-1250

Abstract





It is well known that vowels are shorter before voiceless consonants than voiced ones in English, as in many other languages. The main objective of this study is to examine EFL learners' capacity to produce shorter vowels before a fortis consonant and longer vowels before a lenis consonant. Twenty EFL learners were requested to produce the English vowels / i:, ɑ:, ɔ:, u:, ʒ:, ɪ , æ, ʊ/ and Arabic vowels / i: , a:, u: ,i , a , u /, once before the voiceless stop /t/ and once before the voiced stop /d/. The duration of each vowel was measured for each speaker. For this purpose, the quantitative approach is adopted. The recordings were analyzed using the Praat program. The results revealed that vowels preceding /t/ were shorter than those preceding /d/, confirming the presence of pre-fortis clipping in English and Arabic. The results were compared to those of the native speakers’ mother tongue performance.





References

  1.  Adi, Y., Keshet, J., & Goldrick, M. (2015). Vowel duration measurement using deep neural networks. In Proceedings of the 16th Annual Conference of the International Speech Communication Association (INTERSPEECH 2015), 3419-3423.
  2.  Algethami, G. (2023). English pre-fortis clipping by L2 Saudi speakers. Humanities and Social Sciences Communications, 10(1), 1-6.‏
  3.  Allen, G. D. (1978). Vowel duration measurement: A reliability study. The Journal of the Acoustical Society of America, 63(4), 1176–1185. doi:10.1121/1.381826
  4.  Ashby, M., & Maidment, J. (2005). Introducing Phonetic Science. Cambridge: Cambridge University Press.
  5.  Boersma, P., & Weenink, D. (2021). Praat: doing phonetics by computer [computer program](2011). Version, 5(3), 74.‏
  6.  Carley, P., & Mees, I. M. (2019). American English Phonetics and Pronunciation Practice. Routledge
  7.  Carley, P., Mees, I. M., & Collins, B. (2018). English phonetics and pronunciation practice. Abingdon: Routledge
  8.  Chen, M (1970) Vowel length variation as a function of the voicing of the consonant environment. Phonetica 22(3):129-159.
  9.  Cho, H. (2016). Variation in vowel duration depending on voicing in American, British, and New Zealand English. 8(3), 11-20.‏
  10.  Christensen, L. B., Johnson, R. B., & Turner, L. A. (2020). Research methods, design, and analysis. Boston, MA: Pearson.
  11.  Chung, J. (2019). Production and perception of English vowel length depending on the following consonant voicing by Korean learners of English. Proceedings of SICSS, 2019, 16.‏
  12.  Colman, A. M. (2009). A Dictionary of Psychology (3rd ed.). Oxford University Press.
  13.  Creswell, J. W. (2003). Research design: Qualitative, quantitative, and mixed methods approaches (2nd ed.). Thousand Oaks, CA: SAGE Publications.
  14.  Crystal, T. H., & House, A. S. (1988). The duration of American-English stop consonants: An overview. Journal of Phonetics, 16(3), 285-294.‏
  15.  Dörnyei, Z. (2007). Research methods in applied linguistics: Quantitative, qualitative, and mixed methodologies. Oxford: Oxford University Press.
  16.  Esposito, A. (2002). On vowel height and consonantal voicing effect: Data from Italian. Phonetica, 59(4), 197-231.
  17.  Faraj, S. A. (1987). Vowel length in standard English and modern standard Arabic with implications for teaching pronunciation.
  18.  Fejlová, D. (2014). Pre-fortis shortening in fluent read speech: A comparison of Czech and native speakers of English. AUC PHILOLOGICA, 2014(1), 91-100.‏
  19.  Flege, J. E. & Port, R. F. (1981). Cross-language phonetic interference: Arabic to English, Language and Speech, 24, 125-146.
  20.  Hrychová, H. (2015). Pre-fortis shortening in Czech English.‏
  21.  Kasim, Z.R. (2021). The Effect of Voiceless-Voiced Consonants on Vowel Duration in Arabic.
  22.  Le, N. V. A. (2023). Pre-Fortis Clipping Pattern: A Cross Linguistic Examination Of L2 English Production And Perception By Asian Learners Of English. (No Title).‏
  23.  Lehiste, I. & Peterson, G. E., (1960). Duration of syllable nuclei in English. The Journal of the Acoustical Society of America, 32(6), 693–703. doi:10.1121/1.1908183
  24.  Lehmann, W. P., & Heffner, R. M. S. (1943). Notes on the length of vowels. American Speech, 18(4), 208-215.
  25.  Luce, P. A., & Charles-Luce, J. (1985). Contextual effects on vowel duration, closure duration, and the consonant/vowel ratio in speech production. Journal of the Acoustical Society of America, 78(6), 1949-1957.
  26.  Mack, M. (1982). Voicing-dependent vowel duration in English and French: Monolingual and bilingual production. Journal of the Acoustical Society of America, 71(1), 173-178.
  27.  Maddieson, I. (1997). Phonetic universals. In W. Hardcastle & J. Laver (Eds.), The Handbook of Phonetic Sciences (pp. 619-639). Blackwell Publishers.
  28.  Mitleb, F. (1984). Vowel length contrast in Arabic and English: a spectrographic test, Journal of Phonetics, 12, 229-235.
  29.  Munro, M. J., Flege, J. E., & MacKay, I. R. (1996). The effects of age of second language learning on the production of English vowels. Applied psycholinguistics, 17(3), 313-334.‏
  30.  Munro, M. J. (1993). Productions of English vowels by native speakers of Arabic: Acoustic measurements and accentedness ratings. Language and Speech, 36(1), 39-66.
  31.  Oh, E. J. (2006). Differences in vowel duration due to the underlying voicing of the following coda stop in Russian and English: Native and non-native values. Speech Sciences, 13(3), 19-33.‏
  32.  Peterson, G. E., & Lehiste, I. (1960). Duration of syllable nuclei in English. Journal of the Acoustical Society of America, 32(4), 693-703.
  33.  Port, R. F., Al-Ani, S., & Maeda, S. (1980) Temporal compensation and universal phonetics, Phonetica, 3, 235-252.
  34.  Ramsaran, S. (Ed.). (1990). Studies in the Pronunciation of English: A Commemorative Volume in Honour of A.C. Gimson. Routledge.
  35.  Roach, P. (2009) English Phonetics and Phonology: A Practical Course. 4th Edition, Cambridge University Press, Cambridge.
  36.  Sharf, D. J. (1962). Duration of post-stress intervocalic stops and preceding vowels. Language and Speech, 5(1), 26-30.
  37.  Umeda, N. (1975). Vowel duration in American English. Journal of the Acoustical Society of America, 58(2), 434-445.
  38.  Van Santen, J. P. H. (1992). Contextual effects on vowel duration. Speech Communication, 11(6), 513-546.
  39.  Wiik, K. (1965). Finnish and English vowels. Turku: Turun Yliopisto.
  40.  Yoneyama, K., & Kitahara, M. (2014). Voicing Effect on Vowel Duration: Corpus Analyses of Japanese Infants and Adults, and Production Data of English Learners (< Feature Articles> Data-Driven Phonetic Analysis Using Large-Scale Corpora). Journal of the Phonetic Society of Japan, 18(1), 30-39.‏
  41.  Zhou, W. (2010), The Production of L2 Vowels by Chinese EFL Learners: An Acoustic Perspective on Pre-fortis Clipping.

Identifiers

Statistics

How to Cite

صبيحة حنا عزو, & زياد راكان قاسم. (2026). Investigating EFL Learners’ Production of Pre-Fortis Clipping in English at University Level: Investigating EFL Learners’ Production of Pre-Fortis Clipping in English at University Level. Journal of Education for the Humanities, 6(21), 1269–1250. Retrieved from https://jeh.uomosul.edu.iq/index.php/jeh/article/view/61415
Copyright and Licensing