Socially desirable responding and psychometric assessment of dynamic risk in sexual offenders against children

Does socially desirable responding (SDR) represent a threat to the validity of dynamic risk assessment in sex offenders’ self-reports? We studied a sample of men (N?=?218) who completed a psychometric assessment battery while enrolled at Kia Marama, a prison-based treatment program for sexual offenders against children. SDR, as measured by the Marlowe-Crowne scale, was elevated compared to non-offender samples, increased from pre- to post-treatment, and was negatively correlated with dynamic risk (rs?=??.30 to ?.40), consistent with previous research. Measures of dynamic risk factors derived from the psychometric battery were correlated with sexual recidivism, but correlations were little changed when variance associated with SDR was removed using a regression procedure [Mills, J. F., &; Kroner, D. G. (2006). Impression management and self-report among violent offenders. Journal of Interpersonal Violence, 21(2), 178–192.]. These results suggest that there is a substantial component of the variance in psychometric self-reports of sexual offenders that is associated with SDR (approximately 10%), but that it does not compromise the predictive or construct validity of dynamic risk measures derived from these reports.     

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. When psychometric tests were grouped into dynamic risk domains, only the pretreatment scores of the domain labelled socioaffective functioning (SAF) predicted recidivism and added predictive power to a static risk assessment. The number of risk domains that were dysfunctional pretreatment also predicted recidivism outcome; however, this did not add predictive power to a static risk assessment tool. Possible explanations for the superiority of pre- over posttreatment scores in predicting reconviction are discussed, and directions for further research considered.     

Examining the effectiveness of a UK community-based sexual offender treatment programme for child abusers

Abstract

An analysis of psychometric data from a sample of 341 UK child abusers who had completed a probation-based sex offender treatment programme was carried out in order to assess the effectiveness of therapeutic treatment. A cluster analysis was also undertaken to examine the pattern of pre-treatment problems. Three clusters of offenders, with distinctly different psychometric profiles, were identified depending upon the number and extent of their offence-specific and social adequacy problems. These were labelled Low need, Medium need and High need. Pre–post analyses revealed clinically significant treatment effects for the entire sample, with differing effects found across the clusters as follows: 50–81% of the Low need group scored within the cut-off (or normative range) at the post stage, while between 3% and 26% had shifted to a clinically significant degree; 34–75% of the Medium need group scored within the cut-off range after treatment, while between 9% and 100% had shifted to a clinically significant degree; 16–52% of the High need sample scored within the cut-off at the post-treatment stage, and between 15% and 80% had shifted to a clinically significant degree.     

Actuarial risk assessment and recidivism in a sample of UK intellectually disabled sexual offenders

Abstract

This study examines the effectiveness of three risk assessment instruments: Static-99, Risk Matrix 2000 (RM2000) and the Rapid Risk of Sex Offender Recidivism (RRASOR), in predicting sexual recidivism among 27 intellectually disabled sex offenders. The overall sexual offence reconviction rate was 30%, while non-recidivists remained offence-free over 76 months of follow-up. Static-99 presented as performing as well as guided clinical judgements in mainstream population studies [area under the curve (AUC)=0.64] exceeding the performance of RM2000 (AUC=0.58) in predicting sexual recidivism. However, the results were not statistically significant. In contrast to previous findings, the RRASOR presented the worst level of prediction (AUC=0.42). These results highlight the need to investigate further with larger sample sizes and in conjunction with more dynamic measures of risk. Proposed relevant factors are discussed in detail.     

What is grievance thinking and how can we measure this in sexual offenders?

Purpose. This study proposes and examines a three‐stage model of the grievance process, one of the dynamic risk factors related to risk of sexual recidivism, and aims to evaluate some of the existing measures of this construct. Methods. The research used a sample of 322 male sexual offenders who had completed a cognitive–behavioural programme that aims to reduce recidivism in higher‐risk sexual offenders (as measured using a static actuarial tool). Participants completed two questionnaires measuring aspects of grievance thinking pre‐ and post‐treatment. Results. The results indicated some support for stages 1 and 2 of the proposed model. Contrary to the study hypotheses, results indicated that both measures used have similar psychometric properties. Pre‐ to post‐change analyses suggest that the custodial treatment programme may be having some effect on grievance thinking. However, generally offenders' scores on both measures were low pre‐ and post‐treatment and as a result, according to individual change analyses, the majority did not demonstrate reliable or clinically significant change. Those who were classed as high scorers on either measure did, however, demonstrate such change. Conclusions. Further exploration of a three‐stage model of grievance is warranted. It appears that current measures of grievance in sexual offenders are not adequate to capture this concept fully.     

Inter-rater reliability of dynamic risk assessment with sexual offenders

Abstract

This paper describes the inter-rater reliability of the Structured Assessment of Risk and Need (SARN, formerly known as Structured Risk Assessment). The SARN is a structured framework for identifying sexual offenders’ dynamic risk factors. The SARN comprises 16 dynamic risk factors, categorized into four domains: Sexual Interests, Distorted Attitudes, Socio-Affective Functioning and Self-Management. Two studies, utilizing three samples, are reported. Study 1 examined the inter-rater reliability of four SARN cases with a sample of seven expert raters. Results indicated high inter-rater reliability amongst these participants. Study 2 examined the reliability of SARN with two samples who had received training before supplying inter-rater data (N=88). Results provided some support for the reliability of SARN. However, strength of reliability was dependent upon the method of analysis applied (percentage agreement, Cohen's Kappa, intra-class correlation coefficients). These results are discussed in terms of their clinical and methodological implications.     

The use of psychological interventions for adult male sex offenders with a learning disability: a systematic review†

ABSTRACT

There is a drive to attend to the specific treatment needs of sexual offenders with a learning disability (LD) and increasing recognition of treatment limitations in this group. Cognitive behavioural therapy (CBT)-based sex offender treatment programmes (SOTPs) are being increasingly adapted for the LD population. This review systematically considers the evidence base for LD adapted CBT-based SOTPs. Ten studies together comprising 358 participants were reviewed. LD adapted SOTPs were conducted in prisons, secure settings and in the community. Within-treatment findings generally indicated positive cognitive shift, improvements in victim empathy and increased sexual knowledge on psychometric measures. Whilst findings are encouraging, many of the studies have methodological limitations. In particular, all studies used pre-test post-test study designs lacking control groups therefore restricting the evaluation of treatment outcomes. The LD sex offender literature remains underdeveloped and there is a strong case for further research to establish a valid evidence base for treatment.     

Dynamic risk and sexual offending: the conundrum of assessment

ABSTRACT

The potential to reduce sexual victimisation, promote community safety, and decrease incarceration costs has resulted in considerable progress in terms of how we understand and predict sexual recidivism. And yet, the past decade has seen a degree of fragmentation emerge as research attention has shifted away from relative risk prediction (with its focus on static risk factors) to the identification of factors capable of reducing risk through intervention (i.e. dynamic risk). Although static and dynamic risk are often treated as orthogonal constructs [Beech, A. R., & Craig, L. A. (2012). The current status of static and dynamic factors in sexual offender risk assessment. Journal of Aggression, Conflict and Peace Research, 4(4), 169–185. doi:10.1108/17596591211270671], there are arguments to support a claim that the two are in fact functionally related [see Ward, T. (2015). Dynamic risk factors: Scientific kinds or predictive constructs. Psychology, Crime & Law (in 22(01–02), 2–16); Ward, T., & Beech, A. R. (2015). Dynamic risk factors: A theoretical dead-end? Psychology, Crime & Law, 21(2), 100–113. This discussion clearly affects how we assess dynamic risk. This review considered several commonly used methods of assessment and the evidence offered for their predictive accuracy. Of note were differences in the predictive accuracy of single psychometric measures versus composite scores of dynamic risk domains and the conventions used for establishing effect sizes for risk assessment tools.     

Attributions of responsibility,blame and justifiability to a perpetrator and victim in an acquaintance rape scenario: the influence of Marijuana intoxication

Abstract

Marijuana is a commonly used illicit drug by young adults and has been implicated in about one third of sexual assaults. However, the influence of Marijuana intoxication on rape attributions has not been previously investigated. This study examined the effects of perpetrator and victim Marijuana intoxication and participant sex on rape attributions. Young adults (N = 285) read an acquaintance rape scenario where Marijuana intoxication was manipulated and completed measures of perpetrator (responsibility, blame and justifiability) and victim attributions (responsibility and blame). The results revealed that an intoxicated, compared to sober, perpetrator was attributed less responsibility for his sexual aggression. When the victim was intoxicated, compared to sober, the perpetrator and victim were attributed less and more blame for the assault, respectively. These findings demonstrate that, irrespective of perceiver sex, Marijuana intoxication, like alcohol intoxication, results in an attributional double standard in favour of the perpetrator.     

Community perceptions of a public sex offender registry introduced in Western Australia

Abstract

Publically accessible information about sex offenders through an online registry of sex offenders has been a polemic issue for governments, police and the wider community with debate largely driven by community expectations of police ensuring the safety of children and women from sexual predators. In October 2012, Western Australia became the first and currently only state or territory in Australia to allow public access to a three tiered register via the Community Protection Website (CPW) that would be monitored by West Australian Police. The introduction of this website triggered significant debate across the country. A survey was developed to capture the opinions of members of the public who had accessed the online registry to understand their views of the online tool and its purpose as a form of community safety. Findings from the survey reveal that the community lacks understanding of the prevalence of child sexual abuse and the fact that a child is more likely to experience sexual victimization within the family unit. There is also a need for greater community education and awareness about the purpose and limitations of the CPW as many believed that all sex known sex offenders are publicly registered, therefore creating a false sense of security.     

Community characteristics and child sexual assault: Social disorganization and age

PurposeThis study examines the utility of social disorganization theory as an explanation for community rates of child sexual assault. We explore the sources of preteen (<=12) and teen (13-17) sexual assault victimization.MethodsDrawing on 1,172 child sexual assault incidents reported to law enforcement agencies in Orange County, Florida in 2004-2006, the present study assesses whether social disorganization theory can explain variation in amounts of preteen and teen sexual assault across census tracts. Social disorganization is assessed using measures of economic disadvantage, collective efficacy, and social cohesion, along with measures of population density, violent crime and presence of sex offenders in the community, and gender-related socioeconomic standing.ResultsEconomic disadvantage is positively related to the amount of both preteen and teen sexual assault. Surprisingly, immigrant concentration is negatively related to both preteen and teen sexual assault. Housing density is positively related to preteen sexual assault and the presence of registered sex offenders is positively related to teen sexual assault.ConclusionSocial disorganization provides a moderate explanation for community variance in the amount of preteen and teen sexual assault. Also, sources of child sexual assault are different between younger children and older adolescents.     

A cognitive-based indicator of deviant sexual interest: Concurrent validation of the Stroop task

ABSTRACT

One of the strongest predictors of sexual recidivism is sexual deviance [Hanson, R. K., & Bussière, M. T. (1998). Predicting relapse: A meta-analysis of sexual offender recidivism studies. Journal of Consulting and Clinical Psychology, 66, 348–362. doi:10.1037/0022-006X.66.2.348]. Phallometric testing, the most commonly used method of assessing sexual deviance, has elicited methodological and ethical criticisms, while self-report is vulnerable to social desirability and poor insight. To overcome these limitations, researchers have utilised cognitive measures, including a modified Stroop task, to measure deviant sexual interests among sex offenders using victim selection as a comparison measure. However, the results have been inconclusive. The current study explored the validity of the modified Stroop task as a measure of deviant sexual interest among a non-offending sample of 570 females and 223 male participants, using self-report as the comparison measure. The results indicated a significant gender difference in concurrent validity; there was a significant relationship between self-reported deviance and deviant word Stroop performance for male but not for female respondents, suggesting the Stroop is a viable option for assessing sexual deviance among males. Implications of these findings are discussed relative to sexual recidivism risk assessment.     

Ward and Siegert's Pathways Model of child sexual offending: a cluster analysis evaluation

In the Pathways Model of child sexual offending, Ward and Siegert originally hypothesised the existence of five pathways or subtypes of child molesters, each characterised by a unique configuration of psychological deficits. We administered a battery of 10 psychometric measures to a sample of 97 UK child molesters and then attempted to identify and validate five unique configurations using a k-means cluster analysis. The results suggested that a five-cluster resolution provided the best fit for the data. Three of the extracted clusters showed some resemblances to the pathways originally hypothesised by Ward and Siegert (namely the intimacy deficits, antisocial cognition, and multiple dysfunction pathways). However, two clusters did not fit comfortably with any of the predicted pathways proposed by Ward and Siegert. These two clusters were labelled ‘impulsivity’ and ‘boy predators’ to reflect their psychological vulnerabilities. We describe our findings with reference to future research, treatment implications, and a tentative reworking of the pathways model.     

Measuring motivation to change in offenders

Abstract

Measuring motivation to change in offender populations is important both for selection into treatment programmes and for assessing progress in therapy. Two studies are reported in this paper, both looking at the psychometric properties of questionnaires designed to measure stage of change in therapy. The samples used were patients detained in special hospitals under the Mental Health Act (1983) classification of psychopathic disorder. The first study provides norms for this group on the stages of change in psychotherapy questionnaire, plus some additional information on its relationship with self-esteem and self-efficacy measures. The second study looked at a brief version of the stages of change questionnaire, concluding that its psychometric properties were such that further use was contra-indicated.     

Measuring sexual interest using a pictorial modified Stroop task,a pictorial Implicit Association Test and a Choice Reaction Time task

Abstract

Tasks that can measure sexual interest successfully have utility in forensic settings. Prior to use with problematic sexual interest, however, work is needed in validating such tasks. This study focused on the measurement of non-deviant sexual interest. Eleven gay and 14 straight participants each completed a pictorial Implicit Association Test (IAT), a pictorial modified Stroop task (P-MST) and a Choice Reaction Time (CRT) task. Each task was designed to tap into the sexual interest of participants. Stimuli were of males and females in bathing suits, along with control images and sexual and non-sexual words. The IAT was most successful in differentiating between gay and straight participants. The P-MST also performed well, although the task's position within the battery of tasks seemed to affect the results. The CRT task did not show group differences successfully. Theoretical and methodological implications of the effectiveness of the three tasks in tapping into sexual interest are discussed.     

Positive criminology and imprisoned sex offenders: Demonstration of a way out from a criminal spin through acceptance relationships

Abstract

The purpose of this qualitative research was to examine the change process experienced by imprisoned sex offenders during incarceration from the standpoint of emerging positive criminology perspective. The participants were 38 males incarcerated in two prisons in Israel who had been convicted of various sexual offences. The participants underwent individual in-depth, face-to-face interviews, lasting several hours each. Initially, the findings suggested a tendency for offences to escalate over time, referred to as a “criminal spin”, which can be stopped only by external intervention. Most of the participants also reported that they experienced positive changes during the current imprisonment, associated with broad support received from various sources. This suggests a possible way out of the criminal spin by exposing offenders to the human and social acceptance of meaningful agents, thus supporting the positive criminology perspective. In addition to their theoretical contribution, the findings have practical implications for the assessment, treatment and rehabilitation of sex offenders.     

A psychometric comparison of internet and non-internet sex offenders from a community treatment sample

Abstract

This paper compares psychometric test assessments of 39 men convicted of internet sex offences with 39 convicted of contact offences against a specific victim. Higher rates of socially desirable responding were identified in the internet group, as well as higher rates of emotional loneliness and under assertiveness, although the latter two findings were not statistically significant. This group also achieved lower scores measuring external locus of control, which might reflect their generally higher levels of education and employment (identified from research carried out in tandem with this work). The internet group achieved lower scores on sexualized attitudes towards children, emotional congruence with children and empathy distortions with regard to victims of child abuse. Hence, although they exhibited the kinds of general personality problems exhibited by other sex offenders, they did not support attitudes that explicitly endorse or condone the sexual abuse of children. This paper presents some hypotheses about these results and identifies further research necessary to develop understanding about this new kind of sexually abusive behaviour.     

An investigation into the applicability of the Ward and Siegert Pathways Model of child sexual abuse with Internet offenders

Abstract

This study examined the applicability of the Ward and Siegert (Psychology, Crime & Law, 8, 319–351, 2002) Pathways Model of Sexual Offending to a sample of Internet offenders. The Pathways Model identifies five etiological pathways, each with primary psychological deficits that interact to create a vulnerability to sexual offending behavior. The applicability of this model was tested on a sample of 72 cases drawn from a community sample in England and Wales, via the analysis of primary and associated psychometric indicators of pathway membership. Sixty per cent of men in the sample were found to display dysfunctional psychological mechanisms (43 cases). Two pathways were found to be particularly prominent: the intimacy deficits pathway and the emotional dysregulation pathway. The implications for future treatment and the appropriateness of current treatment programs for this population are examined in the light of these findings.     

Sex Estimation from Human Cranium: Forensic and Anthropological Interest of Maxillary Sinus Volumes

Sex estimation is a key objective of forensic science. We aimed to establish whether maxillary sinus volumes (MSV) could assist in estimating an individual's sex. One hundred and three CT scans were included. MSV were determined using three‐dimensional reconstructions. Two observers performed three‐dimensional MSV reconstructions using the same methods. Intra‐ and interobserver reproducibility were statistically compared using the intraclass correlation coefficient (ICC) (α = 5%). Both intra‐ and interobserver reproducibility were perfect regarding MSV; both ICCs were 100%. There were no significant differences between right and left MSV (p = 0.083). No correlation was found between age and MSV (p > 0.05). We demonstrated the existence of sexual dimorphism in MSV (p < 0.001) and showed that MSV measurements gave a 68% rate of correct allocations to sex group. MSV measurements could be useful to support sex estimation in forensic medicine.     

The measurement and influence of child sexual abuse supportive beliefs

Abstract

The identification of offence-related cognition is a major target of most cognitive–behavioural treatment programmes for sexual offenders, and a number of measures are available for this purpose. This study assessed the psychometric properties of a brief measure of beliefs that support and justify child sexual abuse: the Sex With Children (SWCH) scale. Factor analysis revealed two distinct types of belief: that sex with children is harmless, and that children actively provoke adults into having sex with them. The SWCH was also found to have good internal consistency, test–retest reliability and concurrent validity. Child molesters scored significantly more highly on the SWCH than did rapists or non-offenders, and high-risk child molesters reported more entrenched offence-supportive beliefs than lower risk child molesters. A relationship was also observed between general offence-supportive beliefs as measured by SWCH and offence-specific cognitions ascribing responsibility or enjoyment to the offender's victim. The SWCH subscales appeared to closely match two of the implicit theories hypothesized by Ward and Keenan (1999 Ward, T. and Keenan, T. 1999. Child molesters’ implicit theories. Journal of Interpersonal Violence, 14: 821–838. [Crossref], [Web of Science ®] , [Google Scholar]) to be related to child molestation. Sex offender treatment providers need to be aware of the relationship between underlying implicit theories and offence-specific distorted cognitions about the victim's experience.