New Theoretical and Practical Horizons in Data‐drivenLearning: Introduction to the Special Issue

This paper introduces readers to the TESOL Quarterly special topic issue: Assessing the effectiveness of corpus‐based approaches to English language teaching. The authors open by briefly defining and outlining data‐driven learning (DDL) research on second language (English) teaching. This is followed by an extended discussion of four themes, which pertain to recent developments and future directions in DDL. These themes include: (1) selecting corpora for corpus‐based language teaching; (2) pushing the boundaries of DDL; (3) preparing language educators for corpus‐based language teaching; and (4) reflecting on theory and methods. Throughout the piece, readers are also introduced to those contributions within the special issue, which include a diverse range of pieces that focus on aspects of theory, research, and pedagogy.