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. The results indicated good interrater reliability of the tool, although reliability varies from item to item. A number of factors were identified that seem to reduce the reliability of scoring. The present findings are strengthened by examining interrater reliability of the tool in the usual practitioner context and by calculating a range of reliability statistics. Strategies are suggested to increase reliability in the use of actuarial tools in routine practice.     

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.     

Decisions to offend in men who sexually abuse their daughters

Abstract

A group of nine intrafamilial child molesters of daughters and stepdaughters from Canada and the United Kingdom were interviewed about their analysis of opportunities to sexually offend. Questions focused on the evaluation of immediate and life circumstances surrounding the offence, including how the offender defined, created and responded to opportunities for offending. An equally important goal was identifying strengths in resisting opportunities and coping with spoiled attempts. The interviews were transcribed and subjected to grounded theory analysis. Consistent with the rational choice theory of criminal behaviour the majority of offenders identified information and decision-making processes used to evaluate opportunities for offending. Themes related to offender and victim characteristics, as well as situational factors, are identified and discussed with respect to risk and protective factors. Offenders described positive relationships, greater social/community connectedness and successful employment as present in their lives when not offending. These elements are consistent with positive approaches to sexual offender treatment and management.     

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.     

Why do sexual offenders refuse treatment?

Abstract

Theories of offender motivation for treatment have proposed that external factors may be as important as internal factors in creating a state of readiness for treatment. This paper reports an exploratory study of the barriers to treatment for incarcerated sexual offenders. Qualitative and quantitative analysis of interview and questionnaire data from treatment refusers and accepters suggested that refusers were less aware of the effectiveness of treatment, reported seeing negative side effects of treatment in others and felt they had a higher social status in prison which could be damaged by attending treatment. While this study does not demonstrate a causal link between these experiences and the decision to refuse treatment, it seems reasonable to suggest that take-up of treatment could be increased by more sustained efforts to build relationships with treatment refusers and by the provision of accessible information about treatment and its potential benefits.     

Problems in the measurement of dynamic risk factors in sexual offenders

ABSTRACT

Having valid and reliable tools to measure ‘dynamic’ risk factors and minimising assessor bias is said to be critical in helping to make decisions regarding how individuals convicted of committing crime should be managed and treated, and how resources within the Justice System should be prioritised. This article outlines the problems and issues associated with the measurement of such putative dynamic risk factors (see Ward, 2015 Ward, T. (2015). Dynamic risk factors: Scientific kinds or predictive constructs. Psychology, Crime and Law, 22(01-02), 2–16. [Google Scholar] [Dynamic risk factors: Scientific kinds or predictive constructs. Psychology, Crime and Law.], 22(1–2), 2–16], this volume for a critique of current conceptions of these), and suggests ways of ensuring that measurement is conducted in the most appropriate way for the population being dealt with. Specifically, we would note that the evidence suggests that psychometric analysis, and structured professional judgment can be used to measure dynamic psychological problems using some tools within some samples. However, their use can be hindered by a number of conceptual factors including how the tests are designed and used, their reliability and validity, the context in which they are used, and the samples used. Finally, we would note that interviews are also an important part in the process of dynamic assessment.     

Measuring grievance thinking in sexual offenders: The revised Dissipation–Rumination Scale

Abstract

Rumination is an important part of “grievance thinking”, which has been linked to recidivism in sexual offenders. Grievance thinking is a dynamic risk factor that can be targeted in treatment, and is characterized by a perception of being wronged accompanied by angry, hostile rumination about revenge, and has similarities to the “dangerous world” implicit theory . A revised version of the Dissipation–Rumination Scale is used currently to measure grievance thinking in sexual offenders incarcerated in England and Wales. The study aimed to establish whether this revised measure is valid to use with this population. The scale demonstrated adequate reliability and good convergent validity. However, analyses revealed problems with both construct and predictive validity. Further, it is suggested that the scale may not be sufficient to measure the whole of the “grievance thinking” concept. The results do not provide overwhelming support for the use of this tool with sexual offenders; further research is required before firm conclusions can be drawn regarding the scale's utility. Directions for future research are discussed.     

Reconviction following a cognitive skills intervention: An alternative quasi‐experimental methodology

Purpose. Enhanced Thinking Skills (ETS) has been the most widely delivered cognitive skills programme in the prisons of England and Wales. Four quasi‐experimental outcome studies have produced mixed results, a qualitative survey of offenders’ and facilitators’ experience on the programme proved useful in programme refinement, and a study using random allocation provided evidence that ETS impacts significantly and positively on short‐term attitudinal change. This study aims to make a further contribution, using another methodology, to the accumulation of evidence. Methods. This was a real‐world evaluation, comparing the reconviction outcomes of the population of 17,047 ETS participants in custody from 2000 to 2005 with a national cohort of 19,792 prisoners released over the same period. Results. Overall, prisoners who had attended ETS were found to reoffend at a rate 6.4 percentage points less than the cohort (rising to 7.5 percentage points for programme completers) and 9.5 percentage points less than the predicted rate. In all but the very highest risk group and in every sentence length band, the reoffending outcomes for ETS participants were significantly better than for prisoners in the cohort. Conclusions. It is argued that this non‐experimental methodology makes a contribution to the ‘What Works’ evidence.