Research indicates that these four characteristics are predictive of recidivism among sex offenders. The assessment then considers offender motivation for treatment and their degree of behaviour change during treatment, to incorporate the offender's progress into the risk assessment. This risk assessment is used to identify offender treatment needs. The program tries to address the specific needs of each offender by providing treatment when it is most likely to produce behaviour change and to lead to a safe release, that varies according to changes in offender needs, and that provides a variety of treatment opportunities to allow offenders to engage the programming interactively. Treatment groups meet for about three hours a day, five days a week.
Group therapy is supervised by one senior therapist, with regular visits by the program director.
Groups typically include 10 offenders who are in treatment at the clinic for the first time, but may also include additional offenders who are being treated for the second or third time. After treatment is completed, a report is prepared detailing the offender's risk assessment, progress during treatment, offence cycle and relapse-prevention plan. This report is eventually sent to the National Parole Board. All offenders consented to the use of their information for research purposes as part of their consent to assessment and treatment at the clinic. The earliest offender releases after treatment were in 1989, allowing for a maximum follow-up period of six years.