Daniel O. Jackson is a Professor in the English Department at Kanda University of International Studies, Japan. His publications include Language Teacher Noticing in Tasks (Multilingual Matters, 2021) and Task-Based Language Teaching (Cambridge, 2022).

Chika Takahashi is a Professor in the Faculty of Law and Letters at Ehime University, Japan. Her publications include Motivation to Learn Multiple Languages in Japan: A Longitudinal Perspective (Multilingual Matters, 2023).