Some notes on the validation of VRS-SO static scores

ABSTRACT

The present study was a psychometric examination of Violence Risk Scale-Sexual Offender version (VRS-SO; Wong, S., Olver, M. E., Nicholaichuk, T. P., & Gordon, A. (2003 Wong, S., Olver, M. E., Nicholaichuk, T. P., & Gordon, A. (2003). The violence risk scale: Sexual offender version (VRS-SO). Saskatoon: Regional Psychiatric Centre and University of Saskatchewan. [Google Scholar]). The violence risk scale: Sexual offender version (VRS-SO). Saskatoon: Regional Psychiatric Centre and University of Saskatchewan) static item scores in a Canadian multisite sample of 668 treated adult male sexual offenders. Exploratory factor analysis (EFA) of 13 nonredundant Static-99R and VRS-SO static items generated three factors labelled Youthful Aggression, Sexual Criminality, and General Criminality. The factor and total scores converged with Static-99R and VRS-SO dynamic factor scores. Scores on the VRS-SO static items, EFA-derived factors, and total score each significantly predicted 5- and 10-year sexual, violent, and general recidivism through ROC analyses. Cox regression survival analyses showed all three factors uniquely predicted sexual recidivism to varying degrees in the overall sample; however, only Youthful Aggression and General Criminality uniquely significantly predicted violent and general recidivism in the overall sample and among sexual offender subgroups. Implications for theory, clinical practice, and instrument refinement are discussed.     

Attitudes of Dutch citizens towards male victims of sexual coercion by a female perpetrator

ABSTRACT

This vignette study examines the differences in Dutch people's attitudes towards sexual coercion perpetrated by a male against a female versus sexual coercion perpetrated by a female against a male. In total, 583 Dutch citizens (16–86 years, 59.7% female) evaluated a control scenario and three sexually coercive scenarios (verbal coercion, purposeful intoxication and force), in which the sex of perpetrator and victim was purposely varied. The variables studied include: (1) scenario acceptability, (2) victim responsibility, (3) perpetrator responsibility, (4) victim pleasure, (5) victim distress and (6) support for filing a police report. The results indicate that sexual coercion of men is taken less seriously than sexual coercion of women, especially among Dutch men. However, most differences between attitudes towards male and female victims were found only in the physical force scenario. The findings highlight the importance of educational programmes to raise awareness and reduce stereotypical views on male sexual victimisation.     

Sexual victimisation,sexual cognitions,desire and excitation/inhibition in community Spanish male and female sexual aggressors

Abstract

This study explored the relationship between some aspects of sexuality and individuals' likelihood to perpetrate sexual aggression in men and women. We assessed the following sexuality variables: content of positive sexual cognitions (PSCs)/negative sexual cognitions (i.e., intimate, exploratory, dominance/submission or impersonal), dyadic and solitary sexual desire, propensity for sexual excitation (SE)/sexual inhibition and sexual victimisation during childhood and/or adolescence/adulthood. We examined a community sample of 228 men and 333 women, of whom 67 men and 43 women had perpetrated sexual aggression. Compared to non-aggressors, male aggressors reported a higher frequency of PSCs of dominance; female aggressors reported a higher frequency of PSCs of dominance and exploratory and impersonal sexual cognitions as both positive and negative and negative impersonal cognitions. All sexual aggressors reported higher levels of solitary desire and propensity for SE. Regression analyses revealed that the most relevant variable in the prediction of sexual aggression was sexual victimisation during adolescence/adulthood in both sexes. Differences between male and female sexual aggressors are discussed.     

Effects of Rock and Water: an intervention to prevent sexual aggression

Abstract

Sexual aggression among adolescents is a common problem which is related to lack of aggression regulation, positive or permissive attitudes towards sexual coercion, group pressure and inadequate communicative skills. Rock and Water is a psycho-physical intervention which addresses these issues. We conducted a quasi-experimental trial of Rock and Water in the Netherlands. In total, 521 boys aged 14–17 from nine pre-vocational education schools were included. The primary outcome variable was sexual aggression. Secondary outcomes were sexual interaction competence, self-regulation, attitudes towards dating violence, self-efficacy and self-esteem. Data were collected prior to the intervention, immediately after the intervention and five months after termination of the intervention. Boys reported a significant reduction in coercive strategies and particularly verbal manipulation (OR = .48). At follow-up, the boys reported a significant improvement in self-regulation and general self-efficacy (β = ?.11, p < .05 and β = 1.02, p <.05, respectively). Rock and Water was effective in decreasing verbal manipulation and improving self-regulation and general self-efficacy.     

Mapping an agenda for the study of youth sexual aggression in Europe: assessment,principles of good practice,and the multilevel analysis of risk factors

ABSTRACT

Sexual aggression is a serious threat to young people's sexual health in Europe, but establishing the exact scale of the problem has been hampered by a variety of conceptual and methodological problems. This article presents a framework for studying youth sexual aggression that addresses both prevalence and risk factors of victimisation and perpetration. It proposes a research tool to comprehensively assess the perpetration of, and victimisation by, sexual aggression that captures different coercive strategies, sexual acts, victim–perpetrator relations, and gender constellations. The instrument is rooted in a clear conceptual definition of sexual aggression and was pilot-tested in 10 countries of the European Union (EU). Furthermore, a list of good practice criteria is proposed to promote the quality and comparability of research on youth sexual aggression in Europe. A multilevel approach combining individual-level and country-level predictors of sexual aggression is outlined and illustrated with data from the pilot study in 10 countries.     

The impact of increasing vs. decreasing harassing behaviours on perceptions of hypothetical instances of repeated sexual harassment

ABSTRACT

Sexual harassment is a traditionally underreported crime. One factor that might affect perceptions and willingness to report harassment is its occurrence over time: harassing behaviours that gradually increase or decrease in severity over time might impact its perception. In the present research, 177 female participants read a series of daily scenarios about increasing, decreasing, or steady harassment, and completed measures regarding their perceptions of and willingness to report it. Participants displayed increases and decreases in negative reactions as harassment increased and decreased, respectively, suggesting that each instance of sexual harassment is interpreted independently of earlier harassing behaviours, and that early, strongly harassing behaviours have little impact on how subsequent instances of harassment are perceived. This explanation is supported by the similar ratings in the midpoint (day 4) of the scenario series, regardless of whether harassment was increasing or decreasing.     

Sexual recidivism: A review of static,dynamic and actuarial predictors

The need for accurate risk assessment of sexual offence recidivism has never been greater. It is widely accepted that actuarial risk instruments outperform clinical judgement and the literature has recently witnessed a surge of empirically derived actuarial measures. However, in spite of the increased levels of predictive accuracy, actuarial measures have been criticized as being unrepresentative, lacking specificity, and being heavily reliant on static risk factors without taking into account dynamic risk, psychological emotional states and treatment effects. Rather than offering a critique of the actuarial movement, this paper offers a summary of static and dynamic risk factors associated with sexual offence recidivism as identified from the literature. Implications of incorporating dynamic factors into risk assessments and actuarial measures are discussed.     

Qualification and Disqualification in Rape Cases

Between 1946 and 1950, the police in Stockholm interrogated almost 150 men about their involvement in alleged rapes and attempted rapes. The results of these investigations eventually led to seventeen prosecutions and eleven convictions. It was not easy to convict someone of rape. However, a consequence of the way the court operated was also that only certain men could be convicted, only certain women regarded as reliable witness, and only certain kinds of attack regarded as plausible. The question of whether the alleged crime was considered possible to prove was dependent upon who reported whom for what. For the complainants it was a matter of qualifying for inclusion within the protection of the law. But what appeared as a rejection of someone's credibility, was in actual fact a result of a prior rejection of the individual's person and character. From the point of view of the legal system, some individuals were more fitted than others for the role of credible victim or likely offender. The sexually immoral woman and the man at the mercy of his sexuality were both in danger of having their credibility questioned: the former a poor victim and the latter all too suitable an offender.     

The efficiency of Y-chromosome markers in forensic trace analysis and their inclusion in the Austrian National DNA Database

Y-STR markers are a valuable tool in the analysis of biological traces in which a mixture of male and female trace material is to be expected. It is possible to generate a Y-chromosome DNA profile, even if all the prior sperm tests are negative and no sign of any male component is found in amelogenin. In 38 of a total of 239 sexual offences a perpetrator trace was identified solely using Y-STR analysis. Based on these findings, the Austrian National DNA Database was expanded to include Y-STRs in 2012 with the primary objective to identify serial sexual offences.