Isabelle Buchstaller is Professor of English Linguistics and Director of the Sociolinguistics Lab at the University of Duisburg-Essen, Germany.

Mägorzata Fabiszak is a professor at the Faculty of English and Head of the Department of Cognitive Linguistics at Adam Mickiewicz University, Poznä, Poland.

Melody Ann Ross is a sociolinguist and researcher in the Sociolinguistics Lab at the University of Duisburg-Essen, Germany.