N. J. Enfield is Professor of Linguistics at The University of Sydney, and director of the Sydney Social Sciences and Humanities Advanced Research Centre (SSSHARC). Among his more recent books are Relationship Thinking : Agency, Enchrony, and Human Sociality (2013), Natural Causes of Language (2014), The Utility of Meaning (2015), and The Cambridge Handbook of Linguistic Anthropology (Cambridge, 2014, co-edited with Paul Kockelman and Jack Sidnell).
Jack Sidnell is Professor in the Department of Anthropology at the University of Toronto. He is the author of Conversation Analysis : An Introduction (2010), the editor of Conversation Analysis : Comparative Perspectives (Cambridge, 2009) and co-editor of Conversational Repair and Human Understanding (Cambridge, 2013), The Handbook of Conversation Analysis (2012), and The Cambridge Handbook of Linguistic Anthropology (Cambridge, 2014).