Different Actuarial Risk Measures Produce Different Risk Rankings for Sexual Offenders
Tóm tắt
Percentile ranks were computed for N=262 sex offenders using each of 5 actuarial risk instruments commonly used with adult sex offenders (RRASOR, Static-99, VRAG, SORAG, and MnSOST-R). Mean differences between percentile ranks obtained by different actuarial measures were found to vary inversely with the correlation between the actuarial scores. Following studies of factor analyses of actuarial items, we argue that the discrepancies among actuarial instruments can be substantially accounted for by the way in which the factor Antisocial Behavior and various factors reflecting sexual deviance are represented among the items contained in each instrument. In the discussion, we provide guidance to clinicians in resolving discrepancies between instruments and we discuss implications for future developments in sex offender risk assessment.
Tài liệu tham khảo
Barbaree, H. E., Langton, C. M., & Peacock, E. J. (2006). The factor structure of actuarial items: Its relation to prediction. Sexual Abuse: A Journal of Research and Treatment, 18, 207–226.
Barbaree, H. E., Seto, M. C., Langton, C. M., & Peacock, E. J. (2001). Evaluating the predictive accuracy of six risk assessment instruments for adult sex offenders. Criminal Justice and Behavior, 28, 490–521.
Beech, A. R., & Ward, T. (2004). The integration of etiology and risk in sexual offenders: A theoretical framework. Aggression and Violent Behavior, 10, 31–63.
Doren, D. M. (2002a). Evaluating sex offenders: A manual for civil commitments and beyond. Thousand Oaks, CA: Sage.
Doren, D. M. (2002b). Toward a multidimensional model for sexual recidivism risk. Journal of Interpersonal Violence, 19, 835–856.
Epperson, D. L., Kaul, J. D., Huot, S. J., Hesselton, D., Alexander, W., & Goldman, R. (1998). Minnesota Sex Offender Screening Tool — Revised (MnSOST-R). St. Paul, MN: Minnesota Department of Corrections.
Hanson, R. K. (1997). The development of a brief actuarial risk scale for sexual offense recidivism (User report 1997–04). Ottawa: Department of the Solicitor General of Canada.
Hanson, R. K. (1998). What do we know about sex offender risk assessment? Psychology, Public Policy, and Law, 4, 50—72.
Hanson, R. K., & Morton-Bourgon, K. (2004). Predictors of sexual recidivism: An updated meta-analysis. Public Works and Government Services Canada. Cat. No.: PS3-1/2004-2E-PDF. ISBN: 0-662-36397-3.
Hanson, R. K., & Thornton, D. (1999). Static 99: Improving actuarial risk assessments for sex offenders (User report 1999–02). Ottawa: Department of the Solicitor General of Canada.
Harris, G. T., Rice, M. E., & Quinsey, V. L. (1993). Violent recidivism of mentally disordered offenders: The development of a statistical prediction instrument. Criminal Justice and Behavior, 20, 315–335.
Harris, G. T., Rice, M. E., Quinsey, V. L., Lalumière, M. L., Boer, D., & Lang, C. (2003). A multisite comparison of actuarial risk instruments for sex offenders. Psychological Assessment, 15, 413–425.
Knight, R. A., & Sims-Knight, J. E. (2003). The developmental antecedents of sexual coercion against women: Testing alternative hypotheses with structural equation modeling. In R. A. Prentky, E. S. Janus, & M. C. Seto (Eds.), Sexually coercive behavior: Understanding and management (Vol. 989, pp. 72–85). New York: Annals of the New York Academy of Sciences.
Langton, C. M., Harkins, L., Peacock, E. J., & Barbaree, H. E. (2003). Core dimensions underlying risk assessment instruments for sexual offenders. Paper presented at the 111th Annual Convention of the Americal Psychological Association, Toronto, August, 2003.
Malamuth, N. M. (2003). Criminal and non-criminal sexual aggressors: Integrating psychopathy in a hierarchical-mediational confluence model. In R. A. Prentky, E. S. Janus, & M. C. Seto (Eds.), Sexually coercive behavior: Understanding and management (Volume 989, pp. 33–58). New York: Annals of the New York Academy of Sciences.
McGrath, R. J., Hoke, S. E., Livingston, J. A., & Cumming, G. F. (2001). The Vermont Assessment of Sex Offender Risk (VASOR): AN initial reliability and validity study. Paper presented at the 20th Annual Conference of the Association for the Treatment of Sexual Abusers (ATSA), San Antonio, Texas.
Nuffield, J. (1982). Parole decision making in Canada: Research towards decision guidelines. Ottawa, Ontario: Supply and Services Canada.
Quinsey, V. L., Harris, G. T., Rice, M. E., & Cormier, C. A. (1998). Violent offenders: Appraising and managing risk. Washington, DC: American Psychological Association.
Roberts, C. F., Doren, D. M., & Thornton, D. (2002). Dimensions associated with assessments of sex offender recidivism risk. Criminal Justice and Behavior, 29, 569–589.
Seto, M. C. (2005). Is more better? Combining actuarial risk scales to predict recidivism among adult sex offenders. Psychological Assessment, 17, 156–167.