Makoto Hayashi is Professor in Teaching Japanese as a Foreign Language at Nagoya University, Japan. His research interests revolve around the issue of how we can re-conceptualize what we think of as grammar by exploring the mutual bearing of linguistic structures and the organizations of social interaction. He has published books and numerous journal articles on such topics as self-initiated/other-initiated repair, anticipatory completion, question-answer sequences, multimodal practices, and epistemics. He also co-authored one of the first textbooks of CA written in Japanese called Kaiwa Bunseki Nyûmon (“An Introduction to Conversation Analysis”; with Shuya Kushida and Takeshi Hiramoto, 2017). Makoto serves as an editorial board member for Research on Language and Social Interaction and Interactional Linguistics, as well as for John Benjamins’ monograph series, Studies in Language and Social Interaction.

Leelo Keevallik is a professor in language and culture at Linköping University. She is an interactional linguist focusing on grammar, prosody, and non-lexical vocalizations. Her current research interests are in the field of multimodal interaction analysis, primarily the interface between syntax and the body but also the intersubjective temporalities. She has carried out fieldwork on Estonian dialects, language contact in Sweden, dance classes, pilates instruction, and manual work in a sheep stable.

Arnulf Deppermann is head of the Pragmatics department at The Institute for the German Language (IDS Mannheim, Germany) and professor for German linguistics at the University of Mannheim. He has studied a great variety of topics and phenomena in the fields of Conversation Analysis, Interactional Linguistics and multimodal interaction analysis. His current research focus is on how referential practices and action formation changes over interactional histories. Recently he has worked on theater rehearsals, psychotherapy, and driving lessons. Theoretically, he is interested in issues of action ascription and in the relationship between social interaction and cognitive processes. Other work includes research on understanding and intersubjectivity in interaction, grammar and semantics in interaction, narrative and identity, and the coordination of talk and embodiment in multimodal interaction.  

Jack Sidnell is Professor in the Department of Anthropology at the University of Toronto. His research focuses on the intersection of language structure, social interaction, and reflexive reanalysis, especially in Vietnamese. He is the co-author of The Concept of Action (Cambridge) and Consequences of Language (MIT), both with NJ. Enfield, and is the editor of Conversation Analysis: Comparative Perspectives (2009) and co-editor of Conversational Repair and Human Understanding (2013), The Handbook of Conversation Analysis (2012), and The Cambridge Handbook of Linguistic Anthropology (2014).