Adrian Leemann is Professor of German Sociolinguistics at the University of Bern, Switzerland.

Ria Perkins works as a civil servant for the Ministry of Defence, and is an Honorary Research Fellow at the Aston Institute for Forensic Linguistics in Birmingham, UK.

Grace Sullivan Buker is a Lecturer in Forensic Linguistics and Cross-Cultural Communication at Northeastern University, USA.

Paul Foulkes is Professor of Linguistics and Phonetics at the University of York, UK.