Main Article Content
Abstract
Vocabulary knowledge is fundamental to second and foreign language acquisition. However, developing both vocabulary breadth and depth remains a challenge in an English as a Foreign Language (EFL) context. This study examines how vocabulary is conceptualized and taught, explores the theoretical and pedagogical foundations of vocabulary journals, and evaluates their impact on learners’ vocabulary acquisition and language development. Using a systematic literature review guided by PRISMA principles, this study synthesizes findings from selected empirical and theoretical studies. The data were analyzed thematically to identify recurring patterns, theoretical alignments, and pedagogical implications. The findings indicate that vocabulary is a multidimensional construct involving both breadth and depth of knowledge. Vocabulary journals are grounded in key theoretical frameworks, including cognitive processing theories, the involvement load hypothesis, the noticing hypothesis, dual coding theory, and self-regulated learning. The results show that vocabulary journals enhance vocabulary acquisition by promoting deeper cognitive engagement, repeated exposure, and learner autonomy. They also contribute to the development of reading, writing, speaking, and listening skills. However, variations in journal design and implementation lead to inconsistencies in outcomes, which can affect the overall effectiveness of vocabulary journals in enhancing language skills. This study emphasizes the necessity of effective design and integration of vocabulary journals and calls for further research on their long-term impact.
Keywords
Article Details

This work is licensed under a Creative Commons Attribution 4.0 International License.
In submitting the manuscript to the FOSTER: Journal of English Language Teaching, the authors certify that:
- They are authorized by their co-authors to enter into these arrangements.
- The work described has not been formally published before, except in the form of an abstract or as part of a published lecture, review, thesis, or overlay journal.
- That it is not under consideration for publication elsewhere,
- The publication has been approved by the author(s) and by responsible authorities – tacitly or explicitly – of the institutes where the work has been carried out.
- They secure the right to reproduce any material that has already been published or copyrighted elsewhere.
- They agree to the following license and copyright agreement.
License and Copyright Agreement
Authors who publish with FOSTER: Journal of English Language Teaching agree to the following terms:
- Authors retain copyright and grant the FOSTER: Journal of English Language Teaching right of first publication with the work simultaneously licensed under Creative Commons Attribution License (CC BY 4.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors can enter into separate, additional contractual arrangements for the non-exclusive distribution of the FOSTER: Journal of English Language Teaching published version of the work (e.g., post it to an institutional repository or edit it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) before and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
References
- Abbasi, B. H., Haddad Narafshan, M., & Seifadini, P. (2024). An Exploration of Breadth and Depth of EFL Learners’ Vocabulary Strategy Use Using Structural Equation Modeling. Journal of Language and Translation, 14(1), 149–163. https://doi.org/10.30495/TTLT.2024.709397
- Aghdam, S. S., Mohammadi, R. R., Asadollahfam, H., & Yousefi, M. H. (2025). Enhancing Vocabulary Acquisition in Second Language Learners through Self-Regulation, Spaced Repetition, and Cognitive Load Management Strategies. Language, Literature and Education: Research Updates Vol. 9, 21–38. https://doi.org/10.9734/bpi/lleru/v9/6355
- Al-Khasawneh, F. (2019). The Impact of Vocabulary Size on the Receptive Skills of Saudi EFL Learners. Journal of Language and Education, 5(3), 24–34. https://doi.org/10.17323/jle.2019.8822
- Alzahrani, S., & Alhomyani, M. (2023). The Effectiveness of Explicit Vocabulary Instruction on Productive Vocabulary Learning in Writing Among Intermediate School Learners in Saudi Arabia. Sino-US English Teaching, 20(8), 289–310. https://doi.org/10.17265/1539-8072/2023.08.001
- Amirzai, G. A. (2021). Assessing the Effects of Teaching Vocabulary in Developing Receptive Skills: A Review Article. Journal of World Englishes and Educational Practices (JWEEP), 3(3), 15–21. https://doi.org/10.32996/jweep
- Anam, K. (2017). the Impact of Vocabulary Depth and Breadth To the. International Journal of Language Education, 3(2), 49–57. https://files.eric.ed.gov/fulltext/EJ1244391.pdf
- Andari, I. A. M. Y. (2023). Factors Influence the Acquisition of Vocabulary By Young Learners. Kumarottama: Jurnal Pendidikan Anak Usia Dini, 2(2), 153–166. https://doi.org/10.53977/kumarottama.v2i2.833
- Astan, C., & Tamah, S. M. (2015). The Correlation between Vocabulary Size and the Reading Comprehension of the English Education Department Students. Magister Scientiae, 38, 123–131. https://doi.org/10.33508/MGS.V0I38.788
- Aswadi, D. (2024). Optimizing Language Learning with Relevant and Contextual Vocabulary Selection in Education. Journal on Education, 7(1), 8615–8625.
- Benjamin, A., & Crow, J. T. (2017). Vocabulary at the core. Routledge.
- Bisson, M. J., van Heuven, W. J. B., Conklin, K., & Tunney, R. J. (2014). The Role of Repeated Exposure to Multimodal Input in Incidental Acquisition of Foreign Language Vocabulary. Language Learning, 64(4), 855–877. https://doi.org/10.1111/lang.12085
- Bombo, A., Gde, I., Agus Pramerta, P., Gede, D., & Kumara, A. G. (2022). Students’ Vocabulary and Reading Comprehension: Is It Correlated? Academic Journal on English Studies, 2(2), 87–92.
- Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101. https://doi.org/is http://dx.doi.org/10.1191/1478088706qp063oa
- Brown, D., & Lee, K. (2020). Transformative impact of online language learning platforms. International Journal Education Technology, 13, 45–62.
- Chao, A. (2016, November). Vocabulary Notebooks: A Graduated Approach towards Learner Autonomy. ITBE Link, 44(2). https://www.itbe.org/v_newsletters/article_60866277.htm
- Chen, H. (2023). A lexical network approach to second language development. Humanities and Social Sciences Communications 2023 10:1, 10(1), 735-. https://doi.org/10.1057/s41599-023-02151-6
- Collins, E. B. (2017). Examination of the Effectiveness of Vocabulary Journal in Science [Eastern Illnois University]. https://www.eiu.edu/researchinaction/pdf/Betsy_Collins_Paper.pdf
- Crespo, K., Weisleder, A., Pérez, C., Sanabria, A. S., Peña, &, Cabrera Pérez, R., Pratt, A. S., Sanabria, A. M., & Peña, E. D. (2025). When Words Shift: Age and Language of Elicitation Influence Syntagmatic-Paradigmatic Shifts in Bilingual Children. Behavioral Sciences 2025, Vol. 15, Page 1632, 15(12), 1632. https://doi.org/10.3390/bs15121632
- Dagnaw, A. T. (2023). Revisiting the role of breadth and depth of vocabulary knowledge in reading comprehension. Cogent Education, 10(1), 2217345. https://doi.org/10.1080/2331186X.2023.2217345
- Dujardin, E., Auphan, P., Bailloud, N., Ecalle, J., & Magnan, A. (2022). Tools and Teaching Strategies for Vocabulary Assessment and Instruction : A Review. Social Education Research, 3(1), 34–66. https://doi.org/https://doi.org/10.37256/ser.3120221044
- Ebadi, M. R. (2025). Technology-mediated teaching vocabulary: exploring EFL learners’ depth and breadth of lexical knowledge. Computer Assisted Language Learning, 38(5–6), 1198–1222. https://doi.org/10.1080/09588221.2023.2271530
- Efklides, A., & Schwartz, B. L. (2024). Revisiting the Metacognitive and Affective Model of Self-Regulated Learning: Origins, Development, and Future Directions. Educational Psychology Review 2024 36:2, 36(2), 1–36. https://doi.org/10.1007/S10648-024-09896-9
- Ellis, N. C. (1998). Emergentism, Connectionism, and Language Learning. Language Learning, 48(4), 631–664. https://doi.org/10.1111/0023-8333.00063
- Ellis, N. C., & Wulff, S. (2020). Usage-Based Approaches to L2 Acquisition. In Theories in Second Language Acquisition. Routledge. https://doi.org/10.4324/9780429503986-4
- Erniwati, E., Arid, M., Maghfira, M., & Manurung, G. N. (2024). KIM Vocabulary Building Strategy : Implementation and Implications for Vocabulary Teaching. Exposure : Jurnal Pendidikan Bahasa Inggris, 13(2), 545–553.
- Erniwati, E., Mertosono, S. R., & Aryani, T. (2019). Using Vocabulary Journal to Enhance Vocabulary Mastery of Grade Seven Students of SMPN 18 Palu. INTERAKTIF: Jurnal Ilmiah Pendidikan, Sosial, Budaya, Dan Sejarah, 17(10), 10–29. https://osf.io/yh463/
- Feng, X., & Liu, J. (2023). The developmental trajectories of L2 lexical-semantic networks. Humanities and Social Sciences Communications 2023 10:1, 10(1), 128-. https://doi.org/10.1057/s41599-023-01621-1
- Godfroid, A., Boers, F., & Housen, A. (2013). An Eye for Words: Gauging the Role of Attention in Incidental L2 Vocabulary Acquisition by Means of Eye-Tracking. Studies in Second Language Acquisition, 35(3), 483–517. https://doi.org/10.1017/S0272263113000119
- Gonzalez-Torres, P. F., & Solano, L. M. (2024). Video Listening Journals and Enhanced EFL Listening Skills. Journal of University Teaching and Learning Practice, 21(1), 1–18. https://doi.org/10.53761/stbpjr54
- Gordon, K. R., & Lowry, S. L. (2024). Fostering retention of word learning: The number of training sessions children retrieve words positively relates to post-training retention. Journal of Child Language, 51(3), 710. https://doi.org/10.1017/S0305000923000752
- Haddad, R. H. (2016). Developing Learner Autonomy in Vocabulary Learning in Classroom: How and Why can it be Fostered? Procedia - Social and Behavioral Sciences, 232, 784–791. https://doi.org/10.1016/J.SBSPRO.2016.10.106
- Hamada, A. (2011). Lexical Inferencing and the Acquisition of Vocabulary Depth : Focusing on Strategy Use and Contextual Information. ARELE: Annual Review of English Language Education in Japan, 22(0), 313–328. https://doi.org/10.20581/ARELE.22.0_313
- Hanifia, F. N. (2013). The Use of Vocabulary Journal in Enriching Students’ Vocabulary Mastery and the Students’ Attitudes Toward Its Use. The Journal of English and Education, 1(1), 81–88. http://repository.radenintan.ac.id/10790/1/A THESIS.pdf
- Harselina, H., Idayani, A., & Sailun, B. (2024). Students ’ Difficulties with Vocabulary Mastery in English Language Education at the University Level. J-SHMIC: Journal of English for Academic, 11(2), 120–134.
- Heidari, K. (2024). The Contribution of Willingness to Communicate to L2 Learners’ Depth of Vocabulary Knowledge: An Empirical Study. Journal of Psycholinguistic Research 2024 53:3, 53(3), 35-. https://doi.org/10.1007/s10936-024-10062-z
- Herrera, E. M. (2022). Improving reading comprehension and vocabulary through explicit vocabulary instructions. Research, Society and Development, 11(15), https://doi.org/10.33448/rsd-v11i15.37206
- Hidayad, F., Despita, D., Novia, F., & Purwanto, M. B. (2024). Language Learning Approaches: A Study Meta-Analysis of Vocabulary Mastery in EFL Learners. International Journal of Digital Learning on Languages and Arts, 1(1), 27–33. https://doi.org/10.23887/ijodlla.v1i1.60465
- Hulstijn, J. H., & Laufer, B. (2001). Some Empirical Evidence for the Involvement Load Hypothesis in Vocabulary Acquisition. Language Learning, 51(3), 539–558. https://doi.org/10.1111/0023-8333.00164
- Keating, G. D. (2008). Task effectiveness and word learning in a second language: The involvement load hypothesis on trial. Language Teaching Research, 12(3), 365–386. https://doi.org/10.1177/1362168808089922
- Kim, J. T. (2020). The Gap between Receptive and Productive Vocabulary and Vocabulary Learning Strategies. English Language & Linguistics Research, 26(1), 109–128. https://doi.org/10.17960/ELL.2020.26.1.006
- Krashen, S. (1985). The Input Hypothesis: Issues and Implications. Longman.
- Larson, L., Dixon, T., & Townsend, D. (2013). How Can Teachers Increase Classroom Use of Academic Vocabulary?. Voices from the Middle, 20(4), 16–21.
- Laufer, B., & Hulstijn, J. (2001). Incidental vocabulary acquisition in a second language: The construct of task-induced involvement. Applied Linguistics, 22(1), 1–26. https://doi.org/https://doi.org/10.1093/applin/22.1.1
- Li, J., & Chen, H. (2025). Lexical-semantic and morphological co-development in L2 Chinese: a complex network approach. Lingua, 325, 104004. https://doi.org/10.1016/j.lingua.2025.104004
- Lightbown, P. M., & Spada, N. (2013). How Languages are Learned (4th ed.). Oxford University Press.
- Lo, S. (2024). Vocabulary learning through viewing dual-subtitled videos: Immediate repetition versus spaced repetition as an enhancement strategy. ReCALL, 36(2), 152–167. https://doi.org/10.1017/S0958344024000053
- Luu, N. H. V. (2025). Investigating the Effects of Frequency Levels on Vocabulary Gains Through Explicit Teaching. VNU Journal of Foreign Studies, 41(6), 186–202. https://doi.org/10.63023/2525-2445/jfs.ulis.5525
- Malmström, H., Pecorari, D., & Warnby, M. (2025). Teachers’ receptive and productive vocabulary sizes in English-medium instruction. Journal of Multilingual and Multicultural Development, 46(7), 1905–1923. https://doi.org/10.1080/01434632.2023.2260781
- Martin-Sanchez, C. (2019). An Investigation of the Effects of Implicit vs. Explicit Vocabulary Instruction on the Word Knowledge of First-Grade Students in an Urban Elementary School. University of West Georgia.
- Masrul, M., & Wicaksono, B. H. (2023). The Impact of Explicit Instruction on Teaching Vocabulary to Fourth-Grade Students. Seltics Journal: Scope of English Language Teaching Literature and Linguistics, 6(2), 98–114. https://doi.org/10.46918/seltics.v6i2.2048
- Mayer, R. E. (2021). Multimedia learning (3rd ed.). Cambridge University Press.
- Mayer, R. E. (2024). The Past, Present, and Future of the Cognitive Theory of Multimedia Learning. Educational Psychology Review 2024 36:1, 36(1), 8-. https://doi.org/10.1007/s10648-023-09842-1
- Nashruddin, N., Alam, F. A., Alam, Z., & Niskarlina, N. (2022). The Application of Visual-Pictures Sequence to Increase Students’ Writing Ability. Ethical Lingua: Journal of Language Teaching and Literature, 9(1), 53–60. https://doi.org/10.30605/25409190.349
- Nation, I. S. P. (2013). Learning Vocabulary in Another Language (2nd ed.). Cambridge University Press. https://doi.org/https://doi. org/10.1017/CBO9781139524759
- Nation, I. S. P. (2024). Re-Thinking the Principles of (Vocabulary) Learning and Their Applications. Languages 2024, Vol. 9, Page 160, 9(5), 160. https://doi.org/10.3390/languages9050160
- Nation, I. S. P. . (2022). Learning vocabulary in another language (3rd ed.). Cambridge University Press. https://books.google.com/books/about/Learning_Vocabulary_in_Another_Language.html?id=iNduEAAAQBAJ
- Nie, K., Fu, J., Rehman, H., & Zaigham, G. H. K. (2022). An Empirical Study of the Effects of Incidental Vocabulary Learning Through Listening to Songs. Frontiers in Psychology, 13, 891146. https://doi.org/10.3389/FPSYG.2022.891146/BIBTEX
- Nikijuluw, R. C. G. V. (2020). Vocabulary Journal Strategy: One way to help students’ vocabulary. Jurnal Tahuri, 17(1), 1–7. https://doi.org/http://dx.doi.org/10.30598/tahurivol17issue1page1-7
- Nugraha, S. V., Irawan, L. A., Haerazi, & Frank, T. O. (2022). Segmental Aspects of Pronunciation Errors Produced by ELE Students in Classroom Settings. Journal of Language and Literature Studies, 2(2), 88–98. https://doi.org/10.36312/jolls.v2i2.759
- Nurdini, H., & Marlina, L. (2017). Vocabulary Journal as a Learning Tool for Students in Learning Vocabulary Through Reading at Junior High School. Journal of English Language Teaching, 6(1), 272–285. http://ejournal.unp.ac.id/index.php/jelt
- O’Callaghan, C. M., & Antonacci, P. A. (2012). Promoting Literacy Development: 50 Research-Based Strategies for K-8 Learners. SAGE Publications Inc. https://books.google.com/books/about/Promoting_Literacy_Development.html?id=jurirSaUHMgC
- Paivio, A. (2014). Intelligence, dual coding theory, and the brain. Intelligence, 47, 141–158. https://doi.org/10.1016/j.intell.2014.09.002
- Pan, D. J., Nakayama, M., McBride, C., Cheah, Z. R. E., Zheng, M., & Yeung, C. C. L. (2023). Cognitive-linguistic skills and vocabulary knowledge breadth and depth in children’s L1 Chinese and L2 English. Applied Psycholinguistics, 44(1), 77–99. https://doi.org/10.1017/S0142716422000480
- Pan, R. (2023). The Role of Receptive/Orthographic Vocabulary, Productive/Orthographic Vocabulary, Productive/Phonological Vocabulary and Depth of Vocabulary in Predicting Reading-to-Write Performance. Journal of Psycholinguistic Research 2023 52:6, 52(6), 3039–3062. https://doi.org/10.1007/s10936-023-10027-8
- Pérez-Serrano, M., Nogueroles-López, M., & Duñabeitia, J. A. (2022). Effects of semantic clustering and repetition on incidental vocabulary learning. Frontiers in Psychology, 13, 997951. https://doi.org/10.3389/fpsyg.2022.997951
- Peters, E., & Webb, S. (2018). Incidental Vocabulary Acquisition through Viewing L2 Television and Factors that Affect Learning. Studies in Second Language Acquisition, 40(3), 551–577. https://doi.org/10.1017/S0272263117000407
- Purwati, D. (2022). The Influence of Vocabulary Journal towards Students’ Vocabulary Mastery. English Education: Jurnal Tadris Bahasa Inggris, 15(2), 206–218. https://doi.org/10.24042/ee-jtbi.v15i2.14520
- Reynolds, B. L. (2025). Informal and Incidental Second Language Vocabulary Learning. Education Sciences 2025, Vol. 15, Page 1606, 15(12), 1606. https://doi.org/10.3390/educsci15121606
- Rosyada-AS, A., & Apoko, T. W. (2023). Investigating English Vocabulary Difficulties and Its Learning Strategies of Lower Secondary School Students. Journal of Languages and Language Teaching, 11(3), 489. https://doi.org/10.33394/jollt.v11i3.8404
- Roverud, E., Bradlow, A. R., & Kidd, G. (2020). Examining the sentence superiority effect for sentences presented and reported in forwards or backwards order. Applied Psycholinguistics, 41(2), 381. https://doi.org/10.1017/S014271642000003X
- Ruswandi, R., Aprilianti, Z. V. T., & Utami, U. F. (2024). Investigating EFL Learners’ Autonomous Use of Vocabulary Learning Strategies Outside of School: English. Voices of English Language Education Society, 8(2). https://doi.org/10.29408/veles.v8i2.26832
- Salam, U., & Nurnisa, N. (2021). Students’ Difficulties in Learning Vocabularies. English Community Journal, 5(1), 46–53. https://doi.org/10.32502/ECJ.V5I1.3327
- Salfarani, A. N., Kamil, A. B., & Ambarwati, E. K. (2024). Implementing Vocabulary Journal Strategy in Intensive Reading Activities for EFL Vocational Students. Innovative: Journal Of Social Science Research, 4(5), 936–945. https://doi.org/10.31004/INNOVATIVE.V4I5.13180
- Salsabila, S., & Santoso, D. (2024). Strategies to Optimise Long-term Memory in Learning Vocabulary. TRANSFORM : Journal of English Language Teaching and Learning, 13(3), 150–158. https://doi.org/10.24114/tj.v13i3.67207
- Schmidt, R. W. (1990). The Role of Consciousness in Second Language Learning1. Applied Linguistics, 11(2), 129–158. https://doi.org/10.1093/applin/11.2.129
- Schmitt, N. (1997). Vocabulary learning strategies. In N. Schmitt & M. McCarthy (Eds.), Vocabulary: description, acquisition and pedagogy (pp. 199–227). Cambridge University Press.
- Schmitt, N. (2010). Researching vocabulary: A vocabulary research manual. Palgrave Macmillan.
- Schmitt, N. (2014). Size and Depth of Vocabulary Knowledge: What the Research Shows. Language Learning, 64(4), 913–951. https://doi.org/10.1111/LANG.12077
- Shahiwala, S., Rahul, D. R., & Baker, J. R. (2024). Incidental vocabulary learning: A scientometric review. Research Methods in Applied Linguistics, 3(3), 100160. https://doi.org/10.1016/j.rmal.2024.100160
- Shimamoto, T. (2005). Exploring Lexical Network Systems of Japanese EFL Learners Through Depth and Breadth of Word Knowledge. ARELE: Annual Review of English Language Education in Japan, 16(0), 121–130. https://doi.org/10.20581/ARELE.16.0_121
- Sonbul, S., Salam El-Dakhs, D. A., & Al-Otaibi, H. (2020). Productive versus receptive L2 knowledge of polysemous phrasal verbs: A comparison of determining factors. System, 95, 102361. https://doi.org/10.1016/j.system.2020.102361
- Strong, B. (2023). Retrieval, repetition, and retention: unveiling vocabulary acquisition strategies for ESL learners. Arts & Humanities Open Access Journal, 5(3), 185–190. https://doi.org/10.15406/ahoaj.2023.05.00206
- Sun, D., Chen, Z., & Zhu, S. (2023). What affects second language vocabulary learning? Evidence from multivariate analysis. Frontiers in Education, 8, 1210640. https://doi.org/10.3389/feduc.2023.1210640
- Sun, T., & Nam, H. (2023). Variations in Vocabulary Depth Among Second Language Learners with Comparable Vocabulary Breadths: An Empirical Investigation. Journal of Psycholinguistic Research 2023 52:6, 52(6), 2473–2498. https://doi.org/10.1007/s10936-023-10009-w
- Surmanov, S., & Azimova, M. (2020). Analysis of Difficulties in Vocabulary Acquisition. Journal of Legal Studies and Research, 6(1), 144–153. www.thelawbrigade.com
- Tapia, J. L., Rosa, E., Rocabado, F., Vergara-Martínez, M., & Perea, M. (2022). Does narrator variability facilitate incidental word learning in the classroom? Memory and Cognition, 50(2), 278–295. https://doi.org/10.3758/s13421-021-01228-4
- Teng, M. F. (2023). Understanding Incidental Vocabulary Learning in Practice: An Interview with Stuart Webb. Asian Journal of English Language Teaching, 32(1), 155–166.
- Teng, M. F., Mizumoto, A., & Takeuchi, O. (2024). Understanding growth mindset, self-regulated vocabulary learning, and vocabulary knowledge. System, 122, 103255. https://doi.org/10.1016/j.system.2024.103255
- Teng, M. F., Wang, C., & Zhang, L. J. (2022). Assessing self-regulatory writing strategies and their predictive effects on young EFL learners’ writing performance. Assessing Writing, 51, 100573. https://doi.org/10.1016/j.asw.2021.100573
- Thornbury, S. (2002). How to Teach Vocabulary. Pearson and Longman.
- Ting, J. C. ., & Li, K. . (2019). Using Vocabulary Journals to Improve Vocabulary Learning Among Primary School Pupils in Malaysia. Journal of English Education, 4(2), 108–120.
- Tong, X., & Tong, S. X. (2022). How vocabulary breadth and depth influence bilingual reading comprehension: Direct and indirect pathways. Learning and Individual Differences, 100, 102227. https://doi.org/10.1016/j.lindif.2022.102227
- Torres, H. G. P., & Mera, F. D. C. G. (2025). Enhancing English Language Learning: Implicit and Explicit Vocabulary Strategies. Ciencia Latina Revista Científica Multidisciplinar, 9(5), 15595–15612. https://doi.org/10.37811/cl_rcm.v9i5.20793
- Tu, J. (2024). Semantic network model in Chinese vocabulary generation and evolution. Applied Mathematics and Nonlinear Sciences, 9(1). https://doi.org/10.2478/amns-2024-1415
- Turnuk, T. (2018). The Effects of Implementing Vocabulary Journals into Main Course Classes on Student Success at a Private University. JET (Journal of English Teaching), 4(3), 183. https://doi.org/10.33541/jet.v4i3.855
- Vaughn, S., & Fletcher, J. (2021). Explicit Instruction as the Essential Tool for Executing the Science of Reading. The Reading League Journal, 2(2), 4. https://pmc.ncbi.nlm.nih.gov/articles/PMC9004595/
- Viera, R. T. (2017). Vocabulary knowledge in the production of written texts: a case study on EFL language learners. Revista Tecnológica ESPOL-RTE, 30(3), 89–105.
- Wang, T., & Zhang, H. (2025). Reciprocal effects of vocabulary breadth, vocabulary depth, and reading comprehension: a cross-lagged panel analysis in Chinese-speaking EFL learners. Humanities and Social Sciences Communications 2025 12:1, 12(1), 410-. https://doi.org/10.1057/s41599-025-04694-2
- Wang, Z. (2023). The Application of Semantic Field Theory in Vocabulary Learning. Frontiers in Humanities and Social Sciences, 3(3), 29–40. https://doi.org/10.54691/fhss.v3i3.4461
- Webb, S. (2020). The Routledge Handbook of Vocabulary Studies. The Routledge Handbook of Vocabulary Studies, 1–598. https://doi.org/10.4324/9780429291586
- Webb, S., & Nation, I. S. P. (2017). How vocabulary is learned. Oxford University Press.
- Widjaja, M., & Apriliyanti, D. L. (2022). Enhancing English Speaking Skills for Elementary Learners Through Role Play: Challenges and Opportunities. PROJECT (Professional Journal of English Education), 5(5), 926–933.
- Yilmaz, S., & Kavanoz, S. (2025). Measuring the effect of receptive and productive vocabulary size on foreign language skills. Porta Linguarum. An International Journal of Foreign Language Teaching and Learning, 2025(44), 29–45. https://doi.org/10.30827/portalin.vi44.31870
- Zano, K. (2022). Breadth and Depth-Vocabulary Knowledge and Reading Comprehension in an English First Additional Language Context. JOLLT Journal of Languages and Language Teaching, 10(2), 223–233. https://doi.org/10.33394/jollt.v10i2.4827
- Zeng, Y., Kuo, L. J., Chen, L., Lin, J. A., & Shen, H. (2025). Vocabulary Instruction for English Learners: A Systematic Review Connecting Theories, Research, and Practices. Education Sciences, 15(3). https://doi.org/10.3390/educsci15030262
- Zimmerman, B. J. (1990). Self-Regulated Learning and Academic Achievement: An Overview. Educational Psychologist, 25(1), 3–17. https://doi.org/10.1207/s15326985ep2501_2
- Zimmerman, B. J. (2002). Becoming a self-regulated learner: An overview. Theory into Practice, 41(2), 64–70. https://doi.org/10.1207/s15430421tip4102_2
- Zuhairi, A., & Mistar, J. (2023). Vocabulary Learning Strategies and Vocabulary Mastery by Indonesian EFL Learners. World Journal of English Language, 13(8), 453. https://doi.org/10.5430/wjel.v13n8p453