Editorial: Introduction to the special issue on conducting research syntheses on individual differences in SLA

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Kata Csizér
Ágnes Albert
Katalin Piniel


As systematic research syntheses and meta-analytic studies are becoming more prominent in the social sciences, especially in the fields of psychology and ed-ucation, it appears that applied linguists have also started to follow suit (In’nami et al., 2019). One of the main reasons for this is that abundant knowledge has accumulated through the years about second and foreign lan-guage (L2) learning and teaching, making the time ripe to systematically syn-thesize the research findings in order to draw further conclusions and identify paths future studies could take. This is also true for the subfield of individual differences (IDs) research within applied linguistics, where proliferation in the number of studies focusing on individual learner differences with respect to a large variety of issues has been witnessed in the past decades. Hence, we saw it timely to compile a special issue on research synthesis in the subfield of IDs in L2 learning. We formulated the following aims to guide our venture: First of all, we intend to inform scholars of the nature and utility of research syntheses in our field. Second, we hope that the articles included in the special issue would serve as examples for researchers wishing to embark on conducting similar studies. Our third and not negligible aim was to see what tendencies regarding particular individual differences can be outlined based on previous research results. In order for the readers to make the most of these articles, in this editorial introduction we would like to articulate how we see the role of research synthesis in general and meta-analysis in particular in our field. To this end, we will offer relevant definitions and a short discussion on their utility. We will then move on to outline very generic guidelines for conducting sys-tematic research syntheses, and, finally, we will summarize the studies includ-ed in the volume and their contribution to the field of research on IDs.


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How to Cite
Csizér, K., Albert, Ágnes, & Piniel, K. (2022). Editorial: Introduction to the special issue on conducting research syntheses on individual differences in SLA. Studies in Second Language Learning and Teaching, 12(2), 157-171. https://doi.org/10.14746/ssllt.2022.12.2.1
Author Biographies

Kata Csizér, Eötvös Loránd University, Budapest, Hungary

Kata Csizér is Associate Professor at Eötvös Loránd University, Budapest. Her main research interests are the social psychological aspects of L2 learning and teaching as well as foreign language motivation. She has published over 100 academic papers and has co-authored several books, including the recent Palgrave Macmillan Handbook of Motivation for Language Learning with Martin Lamb, Alastair Henry, and Stephen Ryan.

ORCID ID: https://orcid.org/0000-0003-1755-8142

Contact details: Department of English Applied Linguistics, School of English and American Studies, Eötvös Loránd University, Rákóczi út 5, 1088 Budapest, Hungary (wein.kata@btk.elte.hu)

Ágnes Albert, Eötvös Loránd University, Budapest, Hungary

Ágnes Albert is Assistant Professor at the Department of English Applied Linguistics at Eötvös University, Budapest and holds a PhD in Language Pedagogy. Her research interests include task-based language learning and individual differences with a focus on learner creativity and positive emotions related to foreign language learning. Currently, she is a member of a research team investigating the motivation, autonomy, and positive and negative emotions of secondary school learners about their English classes.

ORCID ID: https://orcid.org/0000-0001-8339-7119

Contact details: Department of English Applied Linguistics, School of English and American Studies, Eötvös Loránd University, Rákóczi út 5, 1088 Budapest, Hungary (albert.agnes@btk.elte.hu)

Katalin Piniel, Eötvös Loránd University, Budapest, Hungary

Katalin Piniel, PhD, works at the Department of English Applied Linguistics, School of English and American Studies, Eötvös Loránd University, Budapest, Hungary. She is particularly interested in conducting research on the dynamic interrelationship of individual differences in foreign language learning.

ORCID ID: https://orcid.org/0000-0001-9225-3301

Contact details: Department of English Applied Linguistics, School of English and American Studies, Eötvös Loránd University, Rákóczi út 5, 1088 Budapest, Hungary (brozik-piniel.katalin@btk.elte.hu)


  1. Al-Hoorie, A. H. (2018). The L2 motivational self system: A meta-analysis. Studies in Second Language Learning and Teaching, 8, 721-754. https://doi.org/10.14746/ssllt.2018.8.4.2
  2. Boo, Z., Dörnyei, Z., & Ryan, S. (2015). L2 motivation research 2005-2014: Under-standing a publication surge and a changing landscape. System, 55, 145-157.
  3. Borenstein, M., Hedges L. V., Higgins, J. P. T., & Rothstein, H. R. (2005). Comprehensive meta-analysis (version 2.2.027) [computer software].
  4. Botes, E., Dewaele, J.-M., & Greiff, S. (2020). The Foreign Language Classroom Anxie-ty Scale and academic achievement: An overview of the prevailing literature and a meta-analysis. Journal for the Psychology of Language Learning, 2, 26-56.
  5. Card, N. A. (2012). Applied meta-analysis for social science research. The Guilford Press.
  6. Cho, K. (2015). Meta-analysis of factor analyses: Comparison of univariate and multivariate approaches using correlation matrices and factor loadings [Unpublished doctoral dissertation]. The Florida State University.
  7. Chong, S. W., & Plonsky, L. (2021a). A primer on qualitative research synthesis in TESOL. TESOL Quarterly, 55(3), 1024-1034.
  8. Chong, S. W., & Plonsky, L. (2021b, June 15). A typology of secondary research in applied linguistics. https://doi.org/10.31219/osfi.o/msjrh
  9. Donker, A. S., de Boer, H., & Kostons, D. (2014). Effectiveness of learning strategy instruction on academic performance: A meta-analysis. Educational Research Review, 11, 1-26.
  10. Dörnyei, Z. (2007). Research methods in applied linguistics: Quantitative, qualitative and mixed methodologies. Oxford University Press.
  11. Duval, S., & Tweedie, R. (2000). Trim and fill: A simple funnel-plot-based method of testing and adjusting for publication bias in meta-analysis. Biometrics, 56, 455-463. https://doi.org/10.1111/j.0006-341x.2000.00455.x
  12. Elahi Shirvan, M., Khajavy, G. H., MacIntyre, P. D., & Taherian, T. (2019). A meta-analysis of L2 willingness to communicate and its three high-evidence correlates. Journal of Psycholinguistic Research, 48, 1241-1267. https://doi.org/ 10.1007/s10936-019-09656-9
  13. Granena, G., & Yilmaz, Y. (2019). Language aptitude profiles and the effectiveness of implicit and explicit corrective feedback. In R. P. Leow (Ed.), The Routledge handbook of second language research in classroom learning (pp. 440-453). Taylor & Francis.
  14. Gurzynski-Weiss, L., & Plonsky, L. (2017). Look who’s interacting: A scoping review of research involving non-teacher/non-peer interlocutors. In L. Gurzynski-Weiss (Ed.), Expanding individual difference research in the in-teraction approach: Investigating learners, instructors, and other interlocutors (pp. 305-324). John Benjamins.
  15. Henry, A., Sundqvist, P., & Thorsen, C., (2019). Motivational practice: Insights from the classroom. Studentlitteratur.
  16. Illés, É. (2020). Understanding context in language use and teaching. Routledge.
  17. In’nami, Y., Koizumi, R., & Tomita, Y. (2019). Meta-analysis in applied linguistics. In J. McKinley & H. Rose (Eds.), The Routledge handbook of research methods in applied linguistics (pp. 240-252). Routledge.
  18. Jahedizadeh, S., & Al-Hoorie, A. (2021). Directed motivational currents: A systematic review. Studies in Second Language Learning and Teaching, 11, 517-541. https://doi.org/10.14746/ssllt.2021.11.4.3
  19. Jin, S., & Lee, H. (2022). Willingness to communicate and its high-evidence factors: A meta-analytic structural equation modeling approach. Journal of Language and Social Psychology. https://doi.org/10.25384/SAGE.c.5950697.v1&nbsp
  20. Larsen-Hall, J., & Plonsky, L. (2015). Reporting and interpreting quantitative research findings: What gets reported and recommendations for the field. Language Learning, 65, 127-159. https://doi.org/10.1111/lang.12115
  21. Li, S. (2015). The associations between language aptitude and second language grammar acquisition: A meta-analytic review of five decades of research. Applied Linguistics, 36, 385-408.
  22. Li, S., Shintani, N., & Ellis, R. (2012). Doing meta-analysis in SLA: Practice, choice, and standards. Contemporary Foreign Language Studies, 384(12), 1-17.
  23. Li, S., & Wang, H. (2018). Traditional literature review and research synthesis. In A. Phakiti, P. De Costa, L. Plonsky & S. Starfield (Eds.), The Palgrave handbook of applied linguistics research methodology (pp. 123-144). Palgrave MacMillan.
  24. Li, S., & Zhou, H. (2021). The methodology of the research on language aptitude: A systematic review. Annual Review of Applied Linguistics, 41, 25-54. https:// doi.org/10.1017/S0267190520000136
  25. Lipsey, M. W., & Wilson, D. B. (2001). Practical meta-analysis. Sage Publications.
  26. Mahmoodi, M. H., & Yousefi, M. (2021). Second language motivation research 2010-2019: A synthetic exploration. The Language Learning Journal, 1-24. https://doi.org/10.1080/09571736.2020.1869809
  27. Masgoret, A.-M., & Gardner, R. C. (2003). Attitudes, motivation, and second language learning: A meta-analysis of studies conducted by Gardner and associates. Language Learning, 53, 123-163.
  28. Maykut, P., & Morehouse, R. (2002). Beginning qualitative research: A philosophical and practical guide. Routledge.
  29. Mendoza, A., & Phung, H. (2019). Motivation to learn languages other than English: A critical research synthesis. Foreign Language Annals, 52, 120-140.
  30. Miles, M. B., Huberman, A. M., & Saldaña, J. (2018). Qualitative data analysis: A methods sourcebook. Sage Publications.
  31. Norris, J. M., & Ortega, L. (2006). The value and practice of research synthesis for language learning and teaching. In J. M. Norris & L. Ortega (Eds.), Synthesizing research on language learning and teaching (pp. 3-50). John Benjamins.
  32. Oswald, F. L., & Plonsky, L. (2010). Meta-analysis in second language research: Choices and challenges. Annual Review of Applied Linguistics, 30, 85-110.
  33. Page, M. J., McKenzie, J. E., Bossuyt, P. M. et al. (2021). The PRISMA 2020 statement: An updated guideline for reporting systematic reviews. Systematic Reviews 10(89), 1-11. https://doi.org/10.1186/s13643-021-01626-4
  34. Plonsky, L. (2011). The effectiveness of second language strategy instruction: A meta-analysis. Language Learning, 61, 993-1038.
  35. Plonsky, L., & Oswald, F. L. (2012). How to do a meta-analysis. In A. Mackey & S. M. Gass (Eds.), Research methods in second language acquisition: A practical guide (pp. 275-295). Basil Blackwell.
  36. 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
  37. Qureshi, M. A. (2016). A meta-analysis: Age and second language grammar acquisition. System, 60, 147-160. https://doi.org/10.1016/j.system.2016.06.001.
  38. Teimouri, Y., Goetze, J., & Plonsky, L. (2019). Second language anxiety and achievement: A meta-analysis. Studies in Second Language Acquisition, 41(2), 363-387. https://doi.org/10.1017/S0272263118000311
  39. Yousefi, M., & Mahmoodi, M. H. (2022). The L2 motivational self-system: A meta-analysis approach. International Journal of Applied Linguistics https://doi.org/10.1111/ijal.12416
  40. Zhang, X. (2019). Foreign language anxiety and foreign language performance: A meta-analysis. Modern Language Journal, 103, 763-781.