Daniel T. Wilcox is Managing Director of Wilcox Psychological Associates, a private clinical and forensic psychology practice.  He is a registered clinical and forensic psychologist, and honorary research fellow and lecturer at the University of Birmingham, Centre for Forensic and Criminological Psychology.  He is Editor of The Use of the Polygraph in Assessing, Treating and Supervising Sexual Offenders (Wiley, 2009).

Tanya Garrett is a registered clinical and forensic psychologist in private practice and an honorary senior lecturer at the University of Birmingham Centre for Forensic and Criminological Psychology. Tanya’s published research relates to sexual violations in therapy and clinical psychology training, ethical issues in therapy, and sexual offender treatment and evaluation.

Leigh Harkins is an assistant professor in the Faculty of Social Science and Humanities, University of Ontario Institute of Technology, Canada. She has experience working in treatment groups for sexual offenders, completing psychological assessments in prisons and community criminal justice settings in Canada and the UK. Leigh's published research focuses on sexual aggression, offender rehabilitation, and multiple perpetrator offending.