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Vol. 25 No. 2 (2022)

Investigating the Lexical Demands of English-as-an-Additional-Language and General-Audience Podcasts and Their Potential for Incidental Vocabulary Learning

January 31, 2022


This study investigated the lexical demands of English-as-an-additional-language (EAL) and general-audience podcasts and their potential for incidental vocabulary learning. Two corpora (i.e., one EAL and one general-audience) comprising 1,188,512 tokens were analyzed to determine the necessary vocabulary knowledge to reach 90% and 95% coverage. The results indicated that 2,000 and 3,000 word families plus proper nouns (PN), marginal words (MW), transparent compounds (TC), and acronyms (AC) covered 90% and 95% of words in podcasts, respectively. The results also showed that EAL and general-audience podcasts required 1,000 and 2,000 words families to reach 90% coverage, respectively. Regarding 95% coverage, knowledge of 2,000 (EAL) and 3,000 (general-audience) word families was required. The results also demonstrated almost 60% of word families from the 2,000-word level were encountered 15+ times in each corpus, suggesting podcasts may hold relatively great potential for learning such words incidentally. Furthermore, our findings indicated that there was some potential for incidentally learning words from the 3,000-word level in both corpora, while general-audience podcasts may hold greater potential in this regard. Implications for using podcasts in language pedagogy are also discussed.


  1. Alm, A. (2013). Extensive listening 2.0 with foreign language podcasts. Innovation in Language Learning and Teaching, 7(3), 266–280.
  2. Anthony, L. (2021). AntWordProfiler (Version 1.5.1) [Computer Software]. Tokyo, Japan: Waseda University.
  3. Bauer, L., & Nation, I. S. P. (1993). Word families. International Journal of Lexicography, 6(4), 253–279.
  4. Bonk, W. J. (2000). Second language lexical knowledge and listening comprehension. International Journal of Listening, 14(1), 14–31.
  5. Brown, D., Stewart, J., Stoeckel, T., & Mclean, S. (2021). The coming paradigm shift in the use of lexical units. Studies in Second Language Acquisition, 43, 950–953.
  6. Brown, R., Waring, R., & Donkaewbua, S. (2008). Incidental vocabulary acquisition from reading, reading-while-listening, and listening to stories. Reading in a Foreign Language, 20(2), 136–163.
  7. Cervetti, G., & Wright, T. (2020). The Role of Knowledge in Understanding and Learning From Text. In E. Birr Moje, P. Afflerbach, P. Enciso, & N. Lesaux (Eds.), Handbook of Reading Research (pp. 237–260). Routledge.
  8. Chang, A., & Millett, S. (2013). The effect of extensive listening on developing L2 listening fluency: some hard evidence. ELT Journal, 68(1), 31–40.
  9. Chen, C., & Truscott, J. (2010). The effects of repetition and L1 lexicalization on incidental vocabulary acquisition. Applied Linguistics, 31(5), 693–713.
  10. Dang, T. N. Y., & Webb, S. (2014). The lexical profile of academic spoken English. English for Specific Purposes, 33(1), 66–76.
  11. Dang, T. N. Y., & Webb, S. (2016). Evaluating lists of high-frequency words. ITL-International Journal of Applied Linguistics, 167(2), 132–158.
  12. Dang, T. N. Y., Webb, S., & Coxhead, A. (2020). Evaluating lists of high-frequency words: Teachers’ and learners’ perspectives. Language Teaching Research, 26(4), 617−641.
  13. Douglas, S. R. (2013). The lexical breadth of undergraduate novice level writing competency. Canadian Journal of Applied Linguistics, 16(1), 152–170.
  14. Douglas, S. R. (2016). The relationship between lexical frequency profiling measures and rater judgements of spoken and written general English language proficiency on the CELPIP-General Test. TESL Canada Journal, 32, 43–64.
  15. Durbahn, M., Rodgers, M., & Peters, E. (2020). The relationship between vocabulary and viewing comprehension. System, 88, 102–166.
  16. Feng, Y., & Webb, S. (2019). Learning vocabulary through reading, listening, and viewing. Studies in Second Language Acquisition, 42(3), 499–523.
  17. Freimuth, H. (2020). Are academic English words learned incidentally? A Canadian case study. BC TEAL Journal, 5(1), 32–43.
  18. Graham, S. (2006). Listening comprehension: The learners’ perspective. System, 34(2), 165–182.
  19. Heilesen, S. (2010). What is the academic efficacy of podcasting? Computers & Education, 55(3), 1063–1068.
  20. Horst, M. (2010). How well does teacher talk support incidental vocabulary acquisition? Reading in a Foreign Language, 22(1), 161–180.
  21. Hu, M., & Nation, I. S. P. (2000). Unknown vocabulary density and reading comprehension. Reading in a Foreign Language, 13(1), 403–430.
  22. _rfl131hsuehchao.pdf
  23. Jin, Z., & Webb, S. (2020). Incidental vocabulary learning through listening to teacher talk. The Modern Language Journal, 104(3), 550–566.
  24. Kaneko, M. (2015). Vocabulary size required for the TOEFL iBT Listening Section. The Language Teacher, 39(1), 9–14.
  25. Laufer, B. (1989). What percentage of text lexis is essential for comprehension? In C. Lauren & M. Nordman (Eds.), Special language: From humans thinking to thinking machines (pp. 316–323). Multilingual Matters
  26. Laufer, B. (2021). LEMMAS, FLEMMAS, WORD FAMILIES, AND COMMON SENSE. Studies in Second Language Acquisition, 43(5), 965–968.
  27. Laufer, B., & Hulstijn, J. (2001). Incidental vocabulary acquisition in a second language: The construct of task-induced involvement. Applied Linguistics, 22(1), 1–26.
  28. Laufer, B., & Sim, D. (1985). An attempt to measure the threshold of competence for reading comprehension. Foreign Language Annals, 18(5), 405–411.
  29. Lu, J. (2007). Podcasting: A fresh solution for old problems. Wireless Ready Symposium E-Proceedings. [Online]. pp. 83–95.
  30. Macmillan. (n.d.). Podcast. In Macmillan Dictionary. Retrieved February 17, 2021, from
  31. Matthews, J. (2018). Vocabulary for listening: Emerging evidence for high and midfrequency vocabulary knowledge. System, 72, 23–36.
  32. McBride, K. (2009). Podcasts and second language learning: Promoting listening comprehension and intercultural competence. In L. Abraham & L. Williams (Eds.), Electronic Discourse in Language Learning and Language Teaching (pp. 153–168). John Benjamins.
  33. McLean, S. (2017). Evidence for the adoption of the flemma as an appropriate word counting unit. Applied Linguistics, 39(6), 823–845.
  34. Meier, A. (2015). L2 incidental vocabulary acquisition through extensive listening to podcasts. Studies in Applied Linguistics & TESOL, 15, 72–84.
  35. Nation, I. S. P. (2001). How many high frequency words are there in English? Language, Learning and Literature: Studies Presented to Hakan Ringbom. Abo Akademi University, Abo: English Department Publications, 4, 167–181.
  36. Nation, I. S. P. (2004). A study of the most frequent word families in the British National Corpus. In P. Bogaards & B. Laufer, Vocabulary in a Second Language (pp. 3–13). John Benjamins.
  37. Nation, I. S. P. (2006). How large a vocabulary is needed for reading and listening? The Canadian Modern Language Review, 63(1), 59–82.
  38. Nation, I. S. P. (2012). The BNC/COCA word family lists.
  39. Nation, I. S. P. (2016). Making and Using Word Lists for Language Learning and Testing. John Benjamins.
  40. Nation, I. S. P. (2017). The BNC/COCA level 6 word family lists (Version 1.0.0) [Data file].
  41. Nguyen, C. D. (2020). Lexical features of reading passages in English-language textbooks for Vietnamese high-school students: Do they foster both content and vocabulary gain? RELC Journal, 52(3), 509–522.
  42. Nurmukhamedov, U. (2017). Lexical coverage of TED Talks: Implications for vocabulary instruction. TESOL Journal, 8(4), 768–790.
  43. Nurmukhamedov, U. & Sadler, R. (2011). Podcasts in four categories: Applications to language learning. In M. Abdous & B. Bacer (Eds.), Academic Podcasting and Mobile Assisted Language Learning: Applications and Outcomes (pp. 176–195). IGI Global. https://10.4018/978-1-60960-141-6.ch011
  44. Nurmukhamedov, U., & Sharakhimov, S. (2021). Corpus-based vocabulary analysis of English podcasts. RELC Journal, Online Advance Publication.
  45. Pavia, N., Webb, S., & Faez, F. (2019). Incidental vocabulary learning through listening to songs. Studies in Second Language Acquisition, 41(4), 745–768.
  46. Pellicer-Sánchez, A., & Schmitt, N. (2010). Incidental vocabulary acquisition from an authentic novel: Do things fall apart? Reading in a Foreign Language, 22(1), 31–55.
  47. Peters, E., & Webb, S. (2018). Incidental vocabulary acquisition through watching a single episode of L2 television. Studies in Second Language Acquisition, 40(3), 1−27.
  48. Phung, D. H., & Ha, H. T. (2022). Vocabulary demands of the IELTS listening test: An in-depth analysis. SAGE Open, 12, 1−13.
  49. Pulido, D. (2004). The relationship between text comprehension and second language incidental vocabulary acquisition: A matter of topic familiarity? Language Learning, 54(3), 469–523.
  50. Putman, S., & Kingsley, T. (2009). The atoms family: Using podcasts to enhance the development of science vocabulary. The Reading Teacher, 63(2), 100–108.
  51. Qian, D. (2002). Investigating the relationship between vocabulary knowledge and academic reading performance: An assessment perspective. Language Learning, 52(3), 513–36.
  52. Rodgers, M. P. H. & Heidt, J. (2020). Levelling up comprehensible input and vocabulary learning: The lexical profile of video games. In Werner, V. & Tegge, F. (Eds.), Pop culture in language education. Routledge.
  53. Rodgers, M. P. H., & Webb, S. (2011). Narrow viewing: The vocabulary in related television programs. TESOL Quarterly, 45(4), 689–717.
  54. Rodgers, M. P. H., & Webb, S. (2016). Listening to lectures. In K. Hyland & P. Shaw (Eds.), The Routledge Handbook of English for Academic Purposes (pp. 165–176). Routledge.
  55. Rodgers, M. P. H., & Webb, S. (2020). Incidental vocabulary learning through viewing television. International Journal of Applied Linguistics, 171(2), 191−220.
  56. Schmitt, N., & Schmitt, D. (2014). A reassessment of frequency and vocabulary size in L2 vocabulary teaching. Language Teaching, 47(4), 484–503.
  57. Schmitt, N., Jiang, X., & Grabe, W. (2011). The percentage of words known in a text and reading comprehension. The Modern Language Journal, 95(1), 26–43.
  58. Snoder, P., & Laufer, B. (2022). EFL Learners' Receptive Knowledge of Derived Words: The Case of Swedish Adolescents. TESOL Quarterly, Advance Online Publication.
  59. Tegge, F. (2017). The lexical coverage of popular songs in English language teaching. System, 67, 87–98.
  60. Tegge, F. & Coxhead, A. (2021). Exploring the vocabulary of rap lyrics. In V. Werner & F. Tegge (Eds.), Pop culture in language education: Theory, research, practice (pp. 71–84). Routledge.
  61. van Zeeland, H. (2018). Vocabulary in listening. In W. Renandya & G. Hu (Eds.), The TESOL Encyclopedia of English Language Teaching (pp. 1–6). Wiley.
  62. van Zeeland, H., & Schmitt, N. (2013a). Incidental vocabulary acquisition through L2 listening: A dimensions approach. System, 41(3), 609–624.
  63. van Zeeland, H., & Schmitt, N. (2013b). Lexical coverage in L1 and L2 listening comprehension: The same or different from reading comprehension? Applied Linguistics, 34(4), 457–479.
  64. Vidal, K. (2011). A comparison of the effects of reading and listening on incidental vocabulary acquisition. Language Learning, 61(1), 219–258.
  65. Vilkaitė-Lozdienė, L. & Schmitt, N. (2020). Frequency as a guide for vocabulary usefulness: High-, mid-, and low-frequency words. In S. Webb (Eds.), The Routledge Handbook of Vocabulary Studies (pp. 81–95). Routledge.
  66. Webb, S. (2007). The effects of repetition on vocabulary knowledge. Applied Linguistics, 28(1), 46–65.
  67. Webb, S. (2010). A corpus-driven study of the potential for vocabulary learning through watching movies. International Journal of Corpus Linguistics, 15(4), 497–519.
  68. Webb, S. (2020). Incidental vocabulary learning. In S. Webb (Eds.) The Routledge Handbook of Vocabulary Studies (pp.225–239). Routledge.
  69. Webb, S. (2021). Research investigating lexical coverage and lexical profiling: What we know, what we don’t know, and what needs to be examined. Reading in a Foreign Language, 33(2), 287–302.
  70. Webb, S., & Macalister, J. (2013). Is text written for children useful for L2 extensive reading? TESOL Quarterly, 47(2), 300−322.
  71. Webb, S., & Nation, I.S.P. (2017). How Vocabulary is Learned. Oxford: Oxford University Press.
  72. Webb, S., & Paribakht, T. (2015). What is the relationship between the lexical profile of test items and performance on a standardized English proficiency test? English for Specific Purposes, 38, 34–43.
  73. Webb, S., & Rodgers, M. P. H. (2009a). The Lexical coverage of movies. Applied Linguistics, 30(3), 407–427.
  74. Webb, S., & Rodgers, M. P. H. (2009b). Vocabulary demands of television programs. Language Learning, 59(2), 335–366.
  75. Winn, R. (2021). 2021 Podcast Stats & Facts (New Research from Apr 2021).
  76. Wood, D. (2010). Formulaic Language and Second Language Speech Fluency: Background, Evidence and Classroom Applications. Continuum.
  77. Wray, A. (2008). Formulaic Language: Pushing the Boundaries. Oxford University Press.
  78. Yeh, C. (2014). An investigation of a podcast learning project for extensive listening. Language Education in Asia, 4(2), 135–149.
  79. Zahar, R., Cobb, T., & Spada, N. (2001). Acquiring vocabulary through reading: Effects of frequency and contextual richness. The Canadian Modern Language Review, 57(4), 541–572.