Chapter published in:
Critical Reflections on Data in Second Language Acquisition
Edited by Aarnes Gudmestad and Amanda Edmonds
[Language Learning & Language Teaching 51] 2018
► pp. 63–88

Data analysis and sampling

Methodological issues concerning proficiency in SLA research

| University of Nevada, , Reno
This chapter addresses the construct of second-language (L2) proficiency as it pertains to L2 data analysis. In L2 studies, a common practice is to group participants into proficiency categories (i.e., groups such as ‘intermediate’ or ‘advanced’; a practice known as dichotomization). Nevertheless, I argue that, for theoretical and empirical reasons, proficiency should be analyzed as a true continuous variable. Theoretically, we conceptualize adult L2 acquisition as a continuous process driven by basic learning mechanisms that may be constrained by underlying principles. Empirically, I present evidence illustrating how creating categorical groups by carving up a continuous dependent measure is statistically inappropriate. Finally, I address the importance of sampling practices and why it is preferable to include participants from a broad proficiency spectrum.
Keywords: L2 proficiency, dichotomization, data analysis, quantitative research methods
Published online: 10 September 2018
https://doi.org/10.1075/lllt.51.04lea
References

References

Abutalebi, J., Cappa, S. F., & Perani, D.
(2001) The bilingual brain as revealed by functional neuroimaging. Bilingualism: Language and Cognition, 4(2), 179–190.CrossrefGoogle Scholar
Alderson, J. C.
(2005) Diagnosing foreign language proficiency: The interface between learning and assessment. London: Continuum.Google Scholar
AlFallay, I.
(2004) The role of some selected psychological and personality traits of the rater in the accuracy of self-and peer-assessment. System, 32(3), 407–425.CrossrefGoogle Scholar
Altman, D. G., & Royston, P.
(2006) The cost of dichotomising continuous variables. BMJ, 332(7549), 1080.CrossrefGoogle Scholar
Alvesson, M., & Sandberg, J.
(2011) Generating research questions through problematization. Academy of Management Review, 36(2), 247–271.CrossrefGoogle Scholar
American Council on the Teaching of Foreign Languages
(2012) ACTFL proficiency guidelines. Retrieved from: https://​www​.actfl​.org​/publications​/guidelines​-and​-manuals​/actfl​-proficiency​-guidelines​-2012
Baayen, R. H.
(2008) Analyzing linguistic data: A practical introduction to statistics using R. Cambridge: Cambridge University Press.CrossrefGoogle Scholar
Bachman, L. F.
(1990) Constructing measures and measuring constructs. In B. Harley, P. Allen, J. Cummins, & M. Swain (Eds.), The development of second language proficiency (pp.26–49). Cambridge: Cambridge University Press.CrossrefGoogle Scholar
Baddeley, A.
(2007) Working memory, thought, and action. Oxford: Oxford University Press.CrossrefGoogle Scholar
Benati, A.
(Ed.) (2011) Issues in second language proficiency. London: Continuum.Google Scholar
Bijvoet, E., & Fraurud, K.
(2012) Studying high-level (L1–L2) development and use among young people in multilingual Stockholm: The role of perceptions of ambient sociolinguistic variation. Studies in Second Language Acquisition 34, 291–319.CrossrefGoogle Scholar
Birdsong, D.
(2014) Dominance and age in bilingualism. Applied Linguistics, 35(4), 374–392.CrossrefGoogle Scholar
Blanche, P., & Merino, B. J.
(1989) Self-assessment of foreign-language skills: Implications for teachers and researchers. Language Learning, 39(3), 313–338.CrossrefGoogle Scholar
Bowden, H. W.
(2016) Assessing second-language oral proficiency for research: The Spanish elicited imitation task. Studies in Second Language Acquisition, 38(4), 647–675.Google Scholar
Canale, M., & Swain, M.
(1980) Theoretical bases of communicative approaches to second language teaching and testing. Applied Linguistics 1, 1–47.CrossrefGoogle Scholar
Cattell, R. B.
(1960) The multiple abstract variance analysis equations and solutions: for nature-nurture research on continuous variables. Psychological Review, 67(6), 353–372.CrossrefGoogle Scholar
Cohen, J.
(1983) The cost of dichotomization. Applied Psychological Measurement, 7, 247–253.CrossrefGoogle Scholar
Cook, V.
(1999) Going beyond the native speaker in language teaching. TESOL Quarterly, 33(2), 185–209.CrossrefGoogle Scholar
Council of Europe
(2001) A Common European Framework of Reference for Languages: Learning, Teaching, Assessment. Cambridge: Cambridge University Press.Google Scholar
Cummins, J.
(1980) Psychological assessment of immigrant children: Logic or intuition? Journal of Multilingual and Multicultural Development 1, 97–111.CrossrefGoogle Scholar
(1984) Bilingualism and special education: Issues in assessment and pedagogy. Clevedon: Multilingual Matters.Google Scholar
(2008) BICS and CALP: Empirical and theoretical status of the distinction. In B. Street & N. H. Hornberger (Eds.), Encyclopedia of language and education, Volume 2: Literacy (2nd ed., pp.–71–83). New York, NY: Springer Science.CrossrefGoogle Scholar
Cunnings, I.
(2012) An overview of mixed-effects statistical models for second language researchers. Second Language Research, 28(3), 369–382.CrossrefGoogle Scholar
Davis, J. M.
(2015) Sampling and what it means. In J. D. Brown & C. Coombe (Eds.), The Cambridge guide to research in language teaching and learning (pp.198–205). Cambridge: Cambridge University Press.Google Scholar
de Bot, K., Lowie, W., & Verspoor, M.
(2007) A dynamic systems theory approach to second language acquisition. Bilingualism: Language and Cognition, 10(1), 7–21.CrossrefGoogle Scholar
DeCat, C., & Serratrice, L.
under review). Predicting language proficiency in bilingual children. Retrieved on June 20, 2017 from https://​osf​.io​/wkgv7/
DeCoster, J., Iselin, A. M. R., & Gallucci, M.
(2009) A conceptual and empirical examination of justifications for dichotomization. Psychological Methods, 14(4), 349.CrossrefGoogle Scholar
DeKeyser, R. M.
(2005) What makes learning second-language grammar difficult? A review of issues. Language Learning, 55(1), 1–25.CrossrefGoogle Scholar
DeVellis, R. F.
(2003) Scale development: Theory and applications. Thousand Oaks, CA: Sage.Google Scholar
Dussias, P. E., Kroff, J. R. V., Tamargo, R. E. G., & Gerfen, C.
(2013) When gender and looking go hand in hand. Studies in Second Language Acquisition, 35(2), 353–387.CrossrefGoogle Scholar
Ellis, N. C.
(2002) Frequency effects in language acquisition: A review with implications for theories of implicit and explicit language acquisition. Studies in Second Language Acquisition, 24, 143–188.Google Scholar
Feldt, L.
(1961) The use of extreme groups to test for the presence of relationship. Psychometrika, 26(3), 307–316.CrossrefGoogle Scholar
Flege, J. E., & Liu, S.
(2001) The effect of experience on adult’s acquisition of a second language. Studies in Second Language Acquisition, 23(4), 527–552.Google Scholar
Flege, J. E., Yeni-Komshian, G. H., & Liu, S.
(1999) Age constraints on second-language acquisition. Journal of Memory and Language, 41(1), 78–104.CrossrefGoogle Scholar
Gabriel, C., & Kireva, E.
(2014) Prosodic transfer in learner and contact varieties: Speech rhythm and intonation of Buenos Aires Spanish and L2 Castilian Spanish produced by Italian native speakers. Studies in Second Language Acquisition, 36(2), 257–281.CrossrefGoogle Scholar
Gries, S. T.
(2013) Statistics for linguistics with R: A practical introduction. Berlin: Walter de Gruyter.CrossrefGoogle Scholar
Grosjean, F.
(1998) Studying bilinguals: Methodological and conceptual issues. Bilingualism: Language and Cognition, 1(2), 131–149.CrossrefGoogle Scholar
Hakuta, K.
(1976) A case study of a Japanese child learning English. Language Learning, 26, 321–351.CrossrefGoogle Scholar
Hoover, M. L., & Dwivedi, V. D.
(1998) Syntactic processing by skilled bilinguals. Language Learning, 48(1), 1–29.CrossrefGoogle Scholar
Hopp, H.
(2006) Syntactic features and reanalysis in near-native processing. Second Language Research, 22(3), 369–397.CrossrefGoogle Scholar
(2013) Grammatical gender in adult L2 acquisition: Relations between lexical and syntactic variability. Second Language Research, 29(1), 33–56.CrossrefGoogle Scholar
Hughes, A.
(2003) Testing for language teachers (2nd ed.). Cambridge: Cambridge University Press.Google Scholar
Hulstijn, J. H.
(2011) Language proficiency in native and nonnative speakers: An agenda for research and suggestions for second-language assessment. Language Assessment Quarterly, 8(3), 229–249.CrossrefGoogle Scholar
(2012) The construct of language proficiency in the study of bilingualism from a cognitive perspective. Bilingualism: Language and Cognition, 15(2), 422–433.CrossrefGoogle Scholar
Jackson, C.
(2008) Proficiency level and the interaction of lexical and morphosyntactic information during L2 sentence processing. Language Learning, 58(4), 875–909.CrossrefGoogle Scholar
Jegerski, J.
(2016) Number attraction effects in near-native Spanish sentence comprehension. Studies in Second Language Acquisition, 38(1), 5–33.Google Scholar
Jiang, N.
(2004) Morphological insensitivity in second language processing. Applied Psycholinguistics, 25(4), 603–634.CrossrefGoogle Scholar
Just, M. A., Carpenter, P. A., & Woolley, J. D.
(1982) Paradigms and processes in reading comprehension. Journal of experimental psychology: General, 111(2), 228–238.CrossrefGoogle Scholar
Kramsch, C., & Whiteside, A.
(2007) Three fundamental concepts in second language acquisition and their relevance in multilingual contexts. The Modern Language Journal, 91, 907–922.CrossrefGoogle Scholar
Kunce, J. T., Cook, D. W., & Miller, D. E.
(1975) Random variables and correlational overkill. Educational and Psychological Measurement, 35(3), 529–534.CrossrefGoogle Scholar
Larsen-Freeman, D.
(2009) Adjusting expectations: The study of complexity, accuracy, and fluency in second language acquisition. Applied Linguistics, 30(4), 579–589.CrossrefGoogle Scholar
Larson-Hall, J.
(2015) A guide to doing statistics in second language research using SPSS and R. New York, NY: Routledge.Google Scholar
Larson-Hall, J., & Plonsky, L.
(2015) Reporting and interpreting quantitative research findings: What gets reported and recommendations for the field. Language Learning, 65(1), 127–159.CrossrefGoogle Scholar
Leal Méndez, T., Farmer, T. A., & Slabakova, R.
(2014) A same-system view of L2 processing: Evidence from long-distance syntactic dependencies in L2 Spanish. In W. Orman & M. J. Valleau (Eds.), Proceedings from the annual 38th Boston University Conference of Language Development (Vol. 2, pp.266–278). Somerville, MA: Cascadilla Press.Google Scholar
Leal, T., Slabakova, R., & Farmer, T.
(2017) The fine-tuning of linguistic expectations over the course of L2 learning. Studies in Second Language Acquisition. Crossref.Google Scholar
Leal, T., & Slabakova, R.
(in press). The relationship between L2 instruction, exposure, and the L2 acquisition of a syntax-discourse property in L2 Spanish. Submitted to a special issue of Language Teaching Research. Crossref
Levshina, N.
(2015) How to do linguistics with R: Data exploration and statistical analysis. Amsterdam: John Benjamins.CrossrefGoogle Scholar
Lim, J. H., & Christianson, K.
(2013) Second language sentence processing in reading for comprehension and translation. Bilingualism: Language and Cognition, 16(3), 518–537.CrossrefGoogle Scholar
Lindeman, R. H., Merenda, P. F., & Gold, R. Z.
(1980) Introduction to bivariate and multivariate analysis. London: Foresman.Google Scholar
Linck, J. A., & Cunnings, I.
(2015) The utility and application of mixed-effects models in second language research. Language Learning, 65(1), 185–207.CrossrefGoogle Scholar
Luk, G., & Bialystok, E.
(2013) Bilingualism is not a categorical variable: Interaction between language proficiency and usage. Journal of Cognitive Psychology, 25(5), 605–621.CrossrefGoogle Scholar
MacCallum, R. C., Zhang, S., Preacher, K. J., & Rucker, D. D.
(2002) On the practice of dichotomization of quantitative variables. Psychological Methods, 7, 19–40.CrossrefGoogle Scholar
MacIntyre, P. D., Noels, K. A., & Clément, R.
(1997) Biases in self-ratings of second language proficiency: The role of language anxiety. Language Learning, 47(2), 265–287.CrossrefGoogle Scholar
MacWhinney, B.
(2004) A multiple process solution to the logical problem of language acquisition. Journal of Child Language, 31(4), 883–914.CrossrefGoogle Scholar
Marian, V., Blumenfeld, H. K., & Kaushanskaya, M.
(2007) The Language Experience and Proficiency Questionnaire (LEAP-Q): Assessing language profiles in bilinguals and multilinguals. Journal of Speech, Language, and Hearing Research, 50(4), 940–967.CrossrefGoogle Scholar
McNamara, T. F.
(1996) Measuring second language performance. London: Longman.Google Scholar
Montrul, S. A.
(2008) Incomplete acquisition in bilingualism: Re-examining the age factor. Amsterdam: John Benjamins.CrossrefGoogle Scholar
Mougeon, F., & Rehner, K.
(2009) From grade school to university: The variable use of on/nous by university FSL students. Canadian Modern Language Review, 66, 269–298.CrossrefGoogle Scholar
Moyer, A.
(1999) Ultimate attainment in L2 phonology. Studies in Second Language Acquisition, 21(1), 81–108.CrossrefGoogle Scholar
Norris, J. M.
(2015) Statistical significance testing in second language research: Basic problems and suggestions for reform. Language Learning, 65(S1), 97–126.CrossrefGoogle Scholar
Norris, J. M., & Ortega, L.
(2013) Assessing learner knowledge. In S. Gass & A. Mackey (Eds.), The Routledge handbook of second language acquisition (pp.573–589). New York: Routledge.Google Scholar
Oller, J. W.
(1978) The language factor in the evaluation of bilingual education. In J. E. Alatis (Ed.), Georgetown University round table on languages and linguistics (pp.410–422). Washington, DC: Georgetown University Press.Google Scholar
Perry, F.
(2011) Research in applied linguistics: Becoming a discerning consumer (2nd ed.). Mahwah, NJ: Lawrence Erlbaum Associates.Google Scholar
Peters, C. C., & Van Voorhis, W. R.
(1940) Statistical procedures and their mathematical bases. New York, NY: McGraw-Hill.CrossrefGoogle Scholar
Pliatsikas, C., & Marinis, T.
(2013) Processing empty categories in a second language: When naturalistic exposure fills the (intermediate) gap. Bilingualism: Language and Cognition, 16(1), 167–182.CrossrefGoogle Scholar
Plonsky, L.
(2013) Study quality in SLA. Studies in Second Language Acquisition, 35, 655–687.CrossrefGoogle Scholar
(2015) Statistical power, p-values, descriptive statistics, and effect sizes: A “back-to-basics” approach to advancing quantitative methods in L2 research. In L. Plonsky (Ed.), Advancing quantitative methods in second language research (pp.23–45). New York, NY: Routledge.Google Scholar
Rampton, B.
(1990) Displacing the ‘native speaker’: Expertise, affiliation and inheritance. ELT Journal, 44(2), 97–101.CrossrefGoogle Scholar
Reichle, R., & Birdsong, D.
(2014) Processing focus structure in L1 and L2 French. Studies in Second Language Acquisition, 36(3), 535–564.CrossrefGoogle Scholar
Rossi, S., Gugler M. F., Friederici, A. D., & Hahne, A.
(2006) The impact of proficiency on syntactic second-language processing of German and Italian: Evidence from event-related potentials. Journal of Cognitive Neuroscience 18, 2030–2048.CrossrefGoogle Scholar
Rothman, J.
(2008) Why all counter-evidence to the Critical Period Hypothesis in second language acquisition is not equal or problematic. Language and Linguistics Compass, 2(6), 1063–1088.CrossrefGoogle Scholar
Scarcella, R.
(2003) Academic English: A conceptual framework. Los Angeles, CA: University of California Language Minority Research Institute.Google Scholar
Shentu, Y., & Xie, M.
(2010) A note on dichotomization of continuous response variable in the presence of contamination and model misspecification. Statistics in Medicine, 29(21), 2200–2214.CrossrefGoogle Scholar
Skehan, P.
(2009) Modelling second language performance: Integrating complexity, accuracy, fluency, and lexis. Applied Linguistics, 30(4), 510–532.CrossrefGoogle Scholar
Skutnabb-Kangas, T., & P. Toukomaa
(1976) Teaching migrant children and learning the language of the host country in the context of the socio-cultural situation of the migrant family. Helsinki: The Finnish National UNESCO.Google Scholar
Slabakova, R.
(2015) The effect of construction frequency and native transfer on second language knowledge of the syntax-discourse interface. Applied Psycholinguistics, 36(3), 671–699.CrossrefGoogle Scholar
Steinhauer, K., White, E. J., & Drury, J. E.
(2009) Temporal dynamics of late second language acquisition: Evidence from event-related brain potentials. Second Language Research, 25(1), 13–41.CrossrefGoogle Scholar
Tanner, D., McLaughlin, J., Herschensohn, J., & Osterhout, L.
(2013) Individual differences reveal stages of L2 grammatical acquisition: ERP evidence. Bilingualism: Language and Cognition, 16(2), 367–382.CrossrefGoogle Scholar
Thomas, M.
(1994) Assessment of L2 proficiency in second language acquisition research. Language Learning, 44, 307–336.CrossrefGoogle Scholar
(2006) Research synthesis and historiography: The case of assessment in second language proficiency. In J. M. Norris & L. Ortega (Eds.), Synthesizing research on language learning and teaching, (pp.279–298). Amsterdam: John Benjamins.CrossrefGoogle Scholar
Tokowicz, N., & MacWhinney, B.
(2005) Implicit and explicit measures of sensitivity to violations in second language grammar: An event-related potential investigation. Studies in Second Language Acquisition, 27(2), 173–204.CrossrefGoogle Scholar
Treffers-Daller, J., & Silva-Corvalán, C.
(Eds.) (2015) Language dominance in bilinguals: Issues of measurement and operationalization. Cambridge: Cambridge University Press.Google Scholar
Tremblay, A.
(2011) Proficiency assessment standards in second language acquisition research. Studies in Second Language Acquisition, 33(3), 339–372.CrossrefGoogle Scholar
Valdés, G.
(2004) Between support and marginalisation: The development of academic language in linguistic minority children. International Journal of Bilingual Education and Bilingualism, 7(2–3), 102–132.CrossrefGoogle Scholar
Velicer, W. F., & Fava, J. L.
(1998) Effects of variable and subject sampling on factor pattern recovery. Psychological Methods, 3(2), 231–251.CrossrefGoogle Scholar
Verhoeven, L., & de Jong, J. H.
(Eds.) (1992) The construct of language proficiency: Applications of psychological models to language assessment. Amsterdam: John Benjamins.CrossrefGoogle Scholar
Whelan, R.
(2008) Effective analysis of reaction time data. The Psychological Record, 58(3), 475–482.Google Scholar
White, L.
(2000) Second language acquisition: From initial state to final state. In J. Archibald (Ed.), Second language acquisition and linguistic theory (pp.130–155). Oxford: Blackwell.Google Scholar
(2003) Second language acquisition and universal grammar. Cambridge: Cambridge University Press.CrossrefGoogle Scholar
Wolfe-Quintero, K., Inagaki, S., & Kim, H. Y.
(1998) Second language development in writing: Measures of fluency, accuracy, & complexity. National Foreign Language Resource Center.Google Scholar
Wu, S. L., & Ortega, L.
(2013) Measuring global oral proficiency in SLA research: A new elicited imitation test of L2 Chinese. Foreign Language Annals, 46(4), 680–704.CrossrefGoogle Scholar
Zhang, R.
(2015) Measuring university-level L2 learners’ implicit and explicit linguistic knowledge. Studies in Second Language Acquisition, 37(3), 457–486.CrossrefGoogle Scholar
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