Journal ArticleDOI
Predictive Validity of the SVR-20 and Static-99 in a Dutch Sample of Treated Sex Offenders
TLDR
The SVR-20 final risk judgment was a significantly better predictor of sexual recidivism than the Static-99 risk category.Abstract:
In this retrospective study, the interrater reliability and predictive validity of 2 risk assessment instruments for sexual violence are presented. The SVR-20, an instrument for structured professional judgment, and the Static-99, an actuarial risk assessment instrument, were coded from file information of 122 sex offenders who were admitted to a Dutch forensic psychiatric hospital between 1974 and 1996 (average follow-up period 140 months). Recidivism data (reconvictions) from the Ministry of Justice were related to the risk assessments. The base rate for sexual recidivism was 39%, for nonsexual violent offenses 46%, and for general offenses 74%. Predictive validity of the SVR-20 was good (total score: r = .50, AUC = .80; final risk judgment: r = .60, AUC = .83), of the Static-99 moderate (total score: r = .38, AUC = .71; risk category: r = .30, AUC = .66). The SVR-20 final risk judgment was a significantly better predictor of sexual recidivism than the Static-99 risk category.read more
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Journal ArticleDOI
The accuracy of recidivism risk assessments for sexual offenders: a meta-analysis of 118 prediction studies.
TL;DR: Empirically derived actuarial measures were more accurate than unstructured professional judgment for all outcomes (sexual, violent, or any recidivism) and structured professional judgment was intermediate between the accuracy found for the actuarial Measures and for unstructuring professional judgment.
Journal ArticleDOI
Poor sleep as a potential causal factor in aggression and violence.
TL;DR: An overview of existing literature on the relation between poor sleep and aggression, irritability, and hostility is given and individual variation within these neurobiological systems may be responsible for amplified aggressive responses induced by sleep loss in certain individuals.
Journal ArticleDOI
Pornography use and sexual aggression: the impact of frequency and type of pornography use on recidivism among sexual offenders
TL;DR: Analysis of the unique contribution of pornography consumption to the longitudinal prediction of criminal recidivism in a sample of 341 child molesters indicated that frequency of pornography use was primarily a risk factor for higher-risk offenders, when compared with lower- risk offenders, and that content of pornography was a risk factors for all groups.
Journal ArticleDOI
Brain Pathology in Pedophilic Offenders: Evidence of Volume Reduction in the Right Amygdala and Related Diencephalic Structures
Kolja Schiltz,Joachim Witzel,Georg Northoff,Kathrin C. Zierhut,Udo Gubka,Hermann Fellmann,Jörn Kaufmann,Claus Tempelmann,Christine Wiebking,Bernhard Bogerts +9 more
TL;DR: Pedophilic perpetrators show structural impairments of brain regions critical for sexual development that are not related to age, and their extent predicts how focused the scope of sexual offenses is on uniform pedophilic activity.
References
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Comparing the areas under two or more correlated receiver operating characteristic curves: a nonparametric approach.
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Forming inferences about some intraclass correlation coefficients.
Kenneth O. McGraw,S. P. Wong +1 more
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