Detmar Meurers | Department of Linguistics, University of Tübingen
We consider the opportunities presented by big educational learner corpora for Second Language Acquisition (SLA). In particular, we focus on the EF Cambridge Open Language Database (EFCAMDAT), an open access database of student writings submitted to Englishtown, the online school of EF Education First. EFCAMDAT stands out for its size (33 million words, 85 thousand learners) and a range of 128 writing tasks covering all CEFR levels with data from learners from varying nationalities. We discuss methodological issues arising from analyzing big data resources generated in educational contexts and argue that Natural Language Processing (NLP) is essential for the automated processing of such datasets. As a study case, we follow the developmental trajectory of relative clauses, a construction that necessitates deeper syntactic analysis. We consider specific issues that can affect the developmental trajectory, including task effects, formulaic language and national language effects.
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Alexopoulou, Theodora, Marije Michel, Akira Murakami & Detmar Meurers
2017. Task Effects on Linguistic Complexity and Accuracy: A Large‐Scale Learner Corpus Analysis Employing Natural Language Processing Techniques. Language Learning 67:S1 ► pp. 180 ff.
Meurers, Detmar & Markus Dickinson
2017. Evidence and Interpretation in Language Learning Research: Opportunities for Collaboration With Computational Linguistics. Language Learning 67:S1 ► pp. 66 ff.
2016. Modeling Systematicity and Individuality in Nonlinear Second Language Development: The Case of English Grammatical Morphemes. Language Learning 66:4 ► pp. 834 ff.
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