The sexual recidivism drop in Canada: A meta-analysis of sex offender recidivism rates over an 80-year period

Research summary

In the past, the Canadian government followed in the footsteps of its American counterpart by enacting “sex offender laws.” Since the 1990s, however, the Canadian criminal justice system has taken a different approach to the issue of sex offender recidivism (SOR), focusing on treatment, rehabilitation, and community risk management. This evidence-based approach has been criticized for not doing enough to prevent convicted offenders from sexually reoffending. This criticism has not been addressed empirically, leaving open the question of whether this Canadian policy shift is associated with changes in the rate of sexual recidivism. The present study uses a meta-analytic framework to look at 185 Canadian-based studies involving over 50,000 offenders, making it possible to combine 226 sexual recidivism rates. After controlling for factors such as follow-up length and the independence of samples, weighted pooled recidivism rates have declined since the 1970s by more than 60%. This trend may have gone unnoticed because it is not related to the year of publication but to the period in which the data were collected.

Policy implications

The findings have significant implications for criminal justice practices including the importance of using risk assessment tools that are regularly calibrated to reflect the evolution of sexual recidivism rates over time. Although the current study cannot provide firm conclusions about the factors responsible for this gradual drop, several hypotheses are discussed. Knowledge-based criminal justice practices, better training for professionals, and improvements in treatment programs may have had a subtle and cumulative impact on sexual recidivism rates. The importance of examining period effects on SOR using a comparative and international perspective is discussed.