Interrater reliability of Risk Matrix 2000/s.

Actuarial risk assessment instruments for sexual offenders are often used in high-stakes decision making and therefore should be subject to stringent reliability and validity testing. Furthermore, those involved in the risk assessment of sexual offenders should be aware of the factors that may affect the reliability of these instruments. The present study examined the interrater reliability of the Risk Matrix 2000/s between one field rater and one independent rater with a sample of more than 100 sexual offenders.

Validation of an adaptation of Levenson's locus of control scale with adult male incarcerated sexual offenders.

This article examines the psychometric properties of an adaptation of Levenson's Locus of Control (LoC) measure that is used by the English and Welsh Prison Service as part of the psychometric assessment battery for sexual offenders participating in the Sex Offender Treatment Programme (SOTP). Reliability and validity analyses were conducted on a sample of 2,497 sexual offenders who had completed SOTP. Internal consistency, convergent validity, and relationship to socially desirable responding were investigated.

How useful are psychometric scores in predicting recidivism for treated sex offenders?

This study examined the relationship between psychometric test scores, psychometric test profiles, and sexual and/or violent reconviction. A sample of 3,402 convicted sexual offenders who attended a probation service-run sexual offender treatment programme in the community completed a battery of psychometric tests pre- and posttreatment. Using Cox regression, posttreatment scores on measures of self-esteem, an ability to relate to fictional characters, and recognition of risk factors were, individually, predictive of recidivism.

Comparing the validity of the RM2000 scales and OGRS3 for predicting recidivism by Internet sexual offenders.

This study examined the predictive validity of four actuarial risk assessment tools with sexual offenders convicted of Internet offenses in England and Wales. Risk Matrix 2000 scales (RM2000/s, RM2000/v, and RM2000/c) and Offender Group Reconviction Scale 3 were examined to establish their accuracy in predicting sexual, violent, sexual and violent, and general reoffending in a sample of 1,344 Internet offenders who had either started a community sentence or been released from prison into the community by March 2007. A modified version of RM2000/s was used.

Interrater Reliability of Risk Matrix 2000/s.

Actuarial risk assessment instruments for sexual offenders are often used in high-stakes decision making and therefore should be subject to stringent reliability and validity testing. Furthermore, those involved in the risk assessment of sexual offenders should be aware of the factors that may affect the reliability of these instruments. The present study examined the interrater reliability of the Risk Matrix 2000/s between one field rater and one independent rater with a sample of more than 100 sexual offenders.

An examination of the predictive validity of the risk matrix 2000 in England and wales.

This study examined the predictive validity of an actuarial risk-assessment tool with convicted sexual offenders in England and Wales. A modified version of the RM2000/s scale and the RM2000 v and c scales (Thornton et al., 2003) were examined for accuracy in predicting proven sexual violent, nonsexual violent, and combined sexual and/or nonsexual violent reoffending in a sample of sexual offenders who had either started a community sentence or been released from prison into the community by March 2007.

The psychometric validation of the Social Problem-Solving Inventory--Revised with UK incarcerated sexual offenders.

This study examined the reliability and validity of the Social Problem-Solving Inventory--Revised (SPSI-R; D'Zurilla, Nezu, & Maydeu-Olivares, 2002) with a population of incarcerated sexual offenders. An availability sample of 499 adult male sexual offenders was used. The SPSI-R had good reliability measured by internal consistency and test-retest reliability, and adequate validity.