Professor Aldert Vrij is Professor of Applied Social Psychology at the University of Portsmouth. His main area of expertise is deception, mainly the nonverbal and verbal characteristics of deception, and he has published widely on these issues. For conducting this research, he has received grants from the ESRC, the Leverhulme Trust, the Dutch Organisation of Scientific Research (the Dutch equivalent of the ESRC) and the Dutch Ministry of Justice. He gives workshops on deception to police officers in several countries on a regular basis.

Professor Ray Bull is Professor of Forensic Psychology at the University of Portsmouth. His main areas of expertise are police interviewing and the relationship between physical appearance and criminality, topics on which he has published extensively. He is regularly invited to present seminars and lectures to police audiences in many countries. His most recent externally funded research project was from the Innovative Research Challenge Fund of the Home Office for work on improving children’s face recognition performance.