Joan Kelly Hall is Professor Emeritus of Applied Linguistics at the Pennsylvania State University. Her research draws on conversation analysis and interactional linguistics to document the specialized interactional practices and actions of teaching-and-learning found in instructional settings.

Yingliang He is a PhD candidate in the Department of Applied Linguistics at the Pennsylvania State University. His research uses conversation analysis to investigate academic discourse. He has also conducted work in cognitive linguistics on cross-cultural and cross-linguistic conceptual metaphors.

Su Yin Khor is Professor of Writing and Rhetoric and Director of the Writing Program at College of the Atlantic. Her research focuses on second language learning and teaching, specifically second language writing, literacy, and language socialization.