P1: GCQ/ P2:
Sexual Abuse: A Journal of Research and Treatment [saj] pp325-sebu-363773 March 6, 2002 10:9 Style ﬁle version Nov. 19th, 1999
Sexual Abuse: A Journal of Research and Treatment, Vol. 14, No. 2, April 2002 (
The Relationship Between Static and Dynamic Risk
Factors and Reconviction in a Sample
of U.K. Child Abusers
and R. Karl Hanson
This study examined how well historical information and psychometric data pre-
dicted sexual recidivism in a sample of child abusers about to undergo group-
based cognitive behavioral treatment in the community. Static, historical factors,
as measured by the Static-99 (R. K. Hanson & D. Thornton, 2000), signiﬁcantly
predicted recidivism over the 6-year follow-up period. High-risk men were over
5 times more likely to be reconvicted for a sexual offence compared to low-risk
men. Adding psychometric measures of dynamic risk (e.g., pro-offending attitudes,
socio-affective problems) signiﬁcantly increased the accuracy of risk prediction
beyond the level achieved by the actuarial assessment of static factors. This result
indicates the importance of consideringdynamicrisk factors in any comprehensive
KEY WORDS: sexual offenders; static risk; dynamic risk; child sexual abusers; recidivism; recon-
Cognitive-behavioral therapy (CBT) is now the dominant approach used in
the United Kingdom for the treatment of sexual offenders (Beckett, 1998). Al-
though there are some studies supporting the effectiveness of CBT (Alexander,
1999; Nicholaichuk, Gordon, Gu, & Wong, 2000), other studies have found CBT
treatment to have little impact on recidivism rates (e.g., Marques, 1998). The vari-
ability across studies may be linked to inadequate methods for evaluating offenders
and the impact of treatment. It is unlikely that all offenders are equally treatable,
University of Birmingham, United Kingdom.
HM Prison Service, London, United Kingdom.
Department of the Solicitor General of Canada, Ottawa, Canada.
To whom all correspondenceshould be addressed at School of Psychology, University of Birmingham,
Edgbaston, Birmingham B15 2TT, United Kingdom; e-mail: email@example.com.
2002 Plenum Publishing Corporation