Olcay Sert is Professor of English Language Education at Mälardalen University, Sweden. He is the editor of the journal Classroom Discourse, and the author of Social Interaction and L2 Classroom Discourse (2015), which was shortlisted for BAAL Book Prize 2016 and was a finalist for the American Association for Applied Linguistics first book award 2017. He co-edited, with Silvia Kunitz and Numa Markee, Classroom-based Conversation Analytic Research: Theoretical and Applied Perspectives on Pedagogy (2021).Hansun Zhang Waring is Professor of Linguistics and Education at Teachers College, Columbia University, USA, and founder of The Language and Social Interaction Working Group (LANSI). As an applied linguist and conversation analyst, Dr. Waring is the author of over 60 journal articles and book chapters in addition to 7 books on social interaction across a variety of contexts, including Theorizing Pedagogical Interaction:Insights from Conversation Analysis (2016), Discourse Analysis: The Questions Discourse Analysts Ask and How they Answer them (2018), and Communicating with the Public: Conversation Analytic Studies (2020; co-edited with E. Reddington).