While L2 instruction is generally considered to enhance, further advance or accelerate the acquisition of a second language (Loewen & Sato, 2017), the effectiveness of L2 instruction may differ relative to learners' educational background. Adult learners with no or disrupted formal education may not benefit from L2 instruction in the same way as more highly educated learners (Deygers & Vanbuel, 2021). Unfortunately, the effectiveness of L2 courses for learners with diverging educational backgrounds remains largely unexamined. To date, SLA research has been limited in terms of target population (Andringa & Godfroid, 2020) and study design (Plonsky 2013). Due to known problems of sampling bias, hardly any large-scale studies have examined L2 gains in adult L2 learners with diverging educational profiles. The few studies that have, have been cross-sectional in nature. Thus, in order to advance the understanding of instructed SLA in a wider sample of adult learners what is needed are large-scale, longitudinal, within-subject studies (Webb & Chang, 2015).
In this study, we will examine what adult learners of Dutch as an L2 with diverging educational backgrounds gain from L2 instruction over a period of three months. Data are collected in February/March and May/June 2022 in a sample of 1500 learners in 150 classrooms by means of a listening and reading comprehension test (authors, forthcoming), the Peabody Picture Vocabulary Test in Dutch (Schlichting, 2005). A background questionnaire was administered to collect demographic data. We analyze the data by means of growth curve models. This will allow us to take into account salient differences between individual learners, such as both prior L2 skills and L2 gains over time (Steele, 2014). Based on the limited research available on lower-educated learners, we expect to find lower gains in these learners than in their higher-educated peers. This study will be the first SLA study to examine educational effectiveness in a large sample of adult L2 learners with diverging educational backgrounds longitudinally.
References
Andringa, S., & Godfroid, A. (2020). Sampling Bias and the problem of generalizability in applied linguistics. Annual Review of Applied Linguistics, 40, 134-142.
Deygers, B., & Vanbuel, M. (2021). Gauging the impact of literacy and educational background on receptive vocabulary test scores. Language Testing (Online First), 1-21.
Loewen, S., & Sato, M. (2017). The Routledge Handbook of Instructed Second Language Acquisition. New York: Routledge.
Plonsky, L. (2013). "Study quality in SLA. An Assessment of Designs, Analyses, and Reporting Practices in Quantitative L2 Research." Studies in Second Language Acquisition, 35, 655-687.
Schlichting, L. (2005). Peabody Picture Vocabulary Test-III-NL. Nederlandse versie. Handleiding. Amsterdam: Harcourt Test Publishers.
Steele, F. (2014). Multilevel Modelling of Repeated MeasuresData. LEMMA VLE Module 15, 1-64. (
http://www.bristol.ac.uk/cmm/learning/course.html).
Webb, S., & Chang, A. C-S. (2015). How does prior word knowledge affect vocabulary learning progress in an extensive reading program? Studies in Second Language Acquisition, 37, 651 – 675.