The Effect of Input Flooding and Meaning-Focused Reading on Incidental Grammar Acquisition among Iranian EFL Learners

Authors
1 Department of Foreign Languages and Linguistics, Shiraz University, Shiraz, Iran
2 Gulf University for Science and Technology
Abstract
Second language (L2) learners often struggle with the acquisition of the present perfect tense. However, input flooding and meaning-focused reading have shown some promise in helping L2 learners acquire an L2 more easily. In light of this, we designed an experiment to investigate whether input flooding and meaning-focused reading activities could help L2 learners comprehend and produce the present perfect tense. To this end, three intact classes from a high school were selected, and they were randomly assigned to three conditions: an input flooding-only condition, a meaning-focused reading plus input flooding condition, and a control condition. The results of the statistical analyses using one-way between-group ANOVAs indicated that incidental exposure through input flooding and meaning-focused reading activities enhanced both the target form’s comprehension and production. The results further demonstrated that meaning-focused reading activities combined with input flooding yielded a more facilitative role in enhancing both the comprehension and production of the feature than input flooding-only did. These findings suggest that incorporating implicit procedures, including input flooding together with meaning-focused reading activities, has the potential to not only help L2 learners comprehend the present perfect tense but also produce this linguistic form. Consistent with the Form Meaning Use (FMU) Model and the noticing hypothesis, our findings encourage the inclusion of structured exposure in language programs by language teachers and curriculum developers to hone L2 learners’ grammatical competence.

Keywords

Subjects


Aka, N. (2020). Incidental learning of a grammatical feature from reading by Japanese learners of English as a foreign language. System, 91, 1-14.
Ary, D., Jacobs, L.C, Sorensen, C.K., & Walker, D. (2019). Introduction to research in education. (10th ed.). Wadsworth/Cengage Learning.
Bardovi-Harlig, K. (2000). Tense and aspect in second language acquisition: Form, meaning and use. Blackwell.
Boers, F. (2018). Intentional versus incidental learning. In J. I. Liontas (Ed.), The TESOL encyclopedia of English language teaching (pp. 1-6). John Wiley & Sons, Inc.
Boers, F. (2021). Evaluating second language vocabulary and grammar instruction: A synthesis of the research on teaching words, phrases, and patterns. Routledge.
Bordag, D., Kirschenbaum, A., Opitz, A., Roganhn, M., & Tschirner, E. (2016). Incidental acquisition of grammatical features during reading in L1 and L2. Studies in Second Language Acquisition, 38, 445-483.
Ellis, N.C. (2002). Frequency effects in language processing: A review with implications for theories of implicit and explicit language acquisition. Studies in Second Language Acquisition, 24(2), 143-188.
Ellis, N. C. & Bogart, P. (2007). Speech and language technology in education: The perspective from SLA research and practice. In Proceedings of the SlaTE Workshop on Speech and Language Technology in Education ISCA Tutorial and Research Workshop, Farmington, Pennsylvania USA, October 1-3, 2007.
Ellis, R. (1997). SLA research and language teaching. Oxford University Press.
Gass, S. M., & Mackey, A. (2002). Frequency effects and second language acquisition: A complex picture?. Studies in Second Language Acquisition, 24(2), 249-260.
Gass, S. (1999).Incidental vocabulary learning: Discussion. Studies in Second Language Acquisition, 21(3), 19-333.
Ghavamnia, M., Eslami-Rasekh, A., & Vahid Dastjerdi, H. (2018). The effects of input-enhanced instruction on Iranian EFL learners’ production of appropriate and accurate suggestions. The Language Learning Journal, 46, 114–131.
Han, Z., Park, E. S., & Combs, C. (2008). Textual enhancement of input: Issues and possibilities. Applied Linguistics, 29, 597-618.
Hernández, T. (2008). The effect of explicit instruction and input flood on students' use of Spanish discourse markers on a simulated oral proficiency interview. Hispania, 665-675.
Hulstijn, J. (2003). Incidental and intentional learning. In C. J. Doughty & M. H. Long (eds.), The Handbook of second language acquisition (pp. 349–382). Blackwell.
Kargar Behbahani, H. K., & Khademi, A. (2022). The concurrent contribution of input flooding, visual input enhancement, and consciousness-raising tasks to noticing and intake of present perfect tense. MEXTESOL Journal, 46(4), n4.
Larsen-Freeman, D. (2015). Research into practice: Grammar learning and teaching. Language Teaching, 48(2), 263-280.
Laufer, B. (2006). Comparing focus on form and focus on forms in second language vocabulary learning. The Canadian Modern Language Review, 63(1), 149-166.
Lee, S. K., & Huang, H. T. (2008). Visual input enhancement and grammar learning: A meta-analytic review. Studies in Second Language Acquisition, 30(3), 307-331.
Lee, J. F. (2002). The incidental acquisition of Spanish: Future tense morphology through reading in a second language. Studies in Second Language Acquisition, 24, 55- 80.
Li, S. (2012). The effects of input-based practice on pragmatic development of requests in L2 Chinese. Language Learning, 62, 403–438.
Loewen, S., Crowther, D., Isbell, D. R., Kim, K. M., Maloney, J., Miller, Z. F., & Rawal, H. (2019). Mobile-assisted language learning: A Duolingo case study. ReCALL, 31(3), 293- 311.
Mahvelati, E. H., & Mukundan, J. (2012). The effects of input flood and consciousness-raising approach on collocation knowledge development of language learners. International Journal of Applied Linguistics and English Literature, 1(6), 182-192.
Norris, J. & Ortega, L (2001). Does type of instruction make a difference? Substantive findings from a meta-analytic review. Language Learning 51(s1), 157-213.
Oosthuizen, J. (2005). Meaning-focused vs form-focused L2 instruction: Implications for writing educational materials for South African learners of English. Stellenbosch Papers in Linguistics, 36, 59-84.
Pallant, J. (2020). SPSS survival manual: A step by step guide to data analysis using IBM SPSS (7th ed.). Routledge.
Rashtchi, M., & Mohammad Yousefi, L. (2017). Reading input flooding versus listening input flooding: Can they boost speaking skill?. Journal of Language and Cultural Education, 5(1), 39-58.
Rebuschat, P., & Williams, J. (2012). Implicit and explicit knowledge in second language acquisition. Applied Psycholinguistics, 33, 1–28.
Reinders, H., & Ellis, R. (2009). The effects of two types of input to intake and the acquisition of implicit and explicit knowledge. In R. Ellis, S. Loewen, C. Elder, R. Erlam, J. Phlip, & H. Reinders (Eds.), Implicit and explicit knowledge in second language learning, testing and teaching (pp.281-302). Multilingual Matters.
Rikhtegar, O., & Gholami, J. (2015). The effect of pre-verses post-presentation input flooding via reading on the young EFL learners’ acquisition of simple past tense. English Language Teaching, 8(3), 80-88.
Ryu, H., & Choi, S. (2024). Metalinguistic explanations and their impact on incidental grammar acquisition: An eye-movement study. Language Teaching Research, 13621688241286668.
Seiba, Z. (2001). Classroom instruction and second language acquisition: The effect of explicit form-focused instruction on L2 learners’ linguistic competence. A doctoral dissertation presented to the University of Mississippi.
Schmidt, R. (1990). The role of consciousness in second language learning. Applied Linguistics 11, 129-158.
Schmidt, R. (1993). Consciousness, learning and interlanguage pragmatics. In Kasper, G., & S. Blum-Kulka (Eds.), Interlanguage pragmatics (pp. 21–42). Oxford University Press.
Schmidt, R. (2001). Attention. In Robinson, P. (Ed.), Cognition and second language instruction (pp. 3–32). Cambridge University Press.
Sharwood-Smith, M. (1993). Input enhancement in instructed SLA: Theoretical bases. Studies in Second Language Acquisition, 15(2), 165—179.
Song, J., & Sardegna, V.G. (2014). EFL learners’ incidental acquisition of English prepositions through enhanced extensive reading instruction. RELC Journal, 45, 67-84.
Susoy, Z., & Zarfsaz, E. (2024). The Effects of Input Flooding vs. Visual Input Enhancement Techniques on EFL Learners’ Grammar Uptake. International Journal of Turkish Education Sciences, 12(3), 1169-1195.
Szcześniak, K. (2024). The noticing hypothesis and formulaic language. Learnability of non-salient language forms. Acta Psychologica, 248, 104372.
Szudarski, P., & Carter, R. (2016). The role of input flood and input enhancement in EFL learners' acquisition of collocations. International Journal of Applied Linguistics, 26(2), 245-265.
Tadayonifar, M., Elgort, I., & Siyanova-Chanturia, A. (2025). Contextual learning and retention of phrasal verbs: The effects of definition placement and typographic enhancement. Studies in Second Language Acquisition, 1-24.
Tagarelli, K. M., Ruiz, S., Vega, J. L. M., & Rebuschat, P. (2016). Variability in second language learning: The roles of individual differences, learning conditions, and linguistic complexity. Studies in Second Language Acquisition, 38(2), 293-316.
Takahashi, S. (2001). The role of input enhancement in developing interlanguage pragmatic competence. In Rose, K., & G. Kasper (Eds.), Pragmatics in language teaching (pp. 171–199). Cambridge University Press.
Takimoto, M. (2009). Exploring the effects of input-based treatment and test on the development of learners’ pragmatic proficiency. Journal of Pragmatics, 41, 1029–1946.
Takimoto, M. (2014). Evaluating the effects of input-based approaches to the teaching of pragmalinguistics and sociopragmatics in second language pragmatics: A case of English request hedges. The IAFOR Journal of Language Learning, 1, 1–16.
Taylor, D. B., Mraz, M., Nichols, W. D., Rickelman, R. J. & Wood, K. D. (2009). Using explicit instruction to promote vocabulary learning for struggling readers. Reading & Writing Quarterly, 25(2-3), 205-220.
Udry, I., & Berthele, R. (2025). A Case Study of Online and Paper Bilingual Dictionaries and their Impact on Vocabulary Learning through Meaning-Focused Reading. International Journal of Lexicography, ecaf004.
VanPatten, B. (2014). Input processing in adult second language acquisition. In B. VanPatten, &, Williams, J. (Ed.), Theories in second language acquisition (pp. 115–135). Lawrence Erlbaum Associates.
Ward, D. F., & Lo, Y. Y. (2023). Incidental development of implicit and explicit grammar knowledge from reading: The case of lower-intermediate learners of English. System, 116, 103094.

Williams, J. (2005). Learning without awareness. Studies in Second Language Acquisition, 27, 269–304.

Williams, J. N. (2009). Implicit learning in second language acquisition. In W. Ritchie, & T. K. Bhatia (Eds.), The new handbook of second language acquisition (pp. 319–344). Emerald Group Publishing.
Wong, W. (2005). Input enhancement: From theory and research to the classroom. McGraw Hill.
Ying, Y. & Hendricks, A. (2004). Collocation awareness in the writing process. Reflections of English Language Teaching, 3, 51-78.

Articles in Press, Accepted Manuscript
Available Online from 16 September 2025