Derek Hook is an Associate Professor of Psychology and a clinical supervisor at Duquesne University, Pittsburgh, USA, and a Extraordinary Professor of Psychology at the University of Pretoria, South Africa.

Stijn Vanheule is a clinical psychologist and a Professor of Psychoanalysis and Clinical Psychology at Ghent University, Belgium. He is also a privately practicing psychoanalyst and a member of the New Lacanian School for Psychoanalysis.