Meta-analysis in second language acquisition research
A critical appraisal
Meta-analysis has become increasingly popular in second language acquisition research (SLA) and has provided valuable summative information about a number of key areas. There are, however, dangers. This article examines a number of key issues that need to be considered in conducting a meta-analysis – inclusiveness, the heterogeneity of language learners, the definition of the independent and dependent variables, the need to consider alternative explanations of observed effects, the importance of examining the quality of the studies included in the analysis, and the apples and oranges problem. These issues are illustrated in a discussion of number of SLA meta-analyses (e.g. Norris and Ortega, 2000; Plonsky, 2011; Qureshi, 2016; Spada and Tomita, 2010). The article concludes by suggesting a number of factors that need to be considered in deciding whether to conduct a meta-analysis and when carrying one out. I argue the need for systematic reviews but suggest that these can often best present their findings in narrative form rather than statistically. I also suggest that a preliminary narrative account of the findings of s systematic review can indicate whether a meta-analysis is appropriate.
Keywords: SLA, meta-analysis, limitations, narrative accounts
Published online: 27 August 2018
Bialystok, E., & Hakuta, K.
Borenstein, M., Hedges, L., Higgins, J., & Rothstein, H.
Glass, S., & Smith, M.
Goo, J., Granena, G., Novella, M., & Yilmaz, M.
(2009) Implicit and explicit instruction in L2 learning: Norris and Ortega (2000) revisited. Paper presented at the Second Language Research Forum. East Lansing, MI.
Jeon, E., & Kaya, T.
Johnson, J., & Newport, E.
Khan, S., Kunz, R., Kleijnen, M., & Antes, G.
Li, S., Shitani, N., & Ellis, R.
Lyster, R., & Saito, K.
Mackey, A., & Goo, J.
Norris, J., & Ortega, L.
Oswald, L., & Plonsky, L.
Personal website downloaded on 31/7/17 from https://lukeplonsky.wordpress.com/bibliographies/meta-analysis/
Plonsky, L., & Oswald, F.
Shintani, N., Li, S., & Ellis, R.
Smith, M., & Glass, G.
Smith, M., Glass, G., & Miller, T.
Spada, N., & Lightbown, P.
Spada, N., & Tomita, Y.
The International Research Foundation for English language Education
Meta-analyses in language research: A selected bibliography. Downloaded from http://www.google.com.au/url?sa=tandrct=jandq=andesrc=sandsource=webandcd=1andved=0ahUKEwjL17itvLLVAhUEFJQKHRYvAkgQFggrMAAandurl=http%3A%2F%2Fwww.tirfonline.org%2Fwp-content%2Fuploads%2F2016%2F05%2FMeta-Analysis_SelectedReferences_2May2016.docandusg=AFQjCNGMewkGA_bUsuJ2eq_Vh6xRMJTtVw (31 July, 2017).
Cited by 2 other publications
Bardovi-Harlig, Kathleen & Llorenç Comajoan-Colomé
Yapp, Deborah June, Rick de Graaff & Huub van den Bergh
This list is based on CrossRef data as of 25 may 2021. Please note that it may not be complete. Sources presented here have been supplied by the respective publishers. Any errors therein should be reported to them.