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The purpose of this paper is to examine the dark figure of crime among federal sex offenders from the USA to quantify crime victims and sex crime events among those with no official criminal record.

Using data on 119 offenders selected from a five-year census of sex offenders selected from a federal probation jurisdiction in the Midwestern United States, descriptive, partial correlations, and ROC-AUC models were conducted.

In total, 69 percent of offenders self-reported a contact sexual offense during polygraph examination. In total, 34 offenders had zero official record of sexual abuse but non-zero self-reported history of sexual abuse. These 34 clients offended against 148 victims that potentially denoted a minimum number of 148 sex crime events, a median number of 1,480 sex crime events, a mean number of 32,101 sex crime events, and a maximum number of 827,552 sex crime events. Total paraphilias were not predictive of self-reported sexual offending but were strongly associated with prolific self-reported sexual offending.

The dark figure of sexual offending is enormous and the revelation of this information is facilitated by polygraph examination of federal sex offenders. Ostensibly non-contact sex offenders such as those convicted of possession of child pornography are very likely to have a history of contact sexual offending. Consistent with the containment model, polygraph examinations of the sexual history of offenders convicted of sexual offenses should be required to facilitate public safety.

Recently researchers working on criminal behaviour have interested in elder offenders as the population is getting older. Crime statistics showed that the number of offenders over the age 55 is increasing each year. These statistics revealed that older people engage not only in minor crimes but also engage in serious crimes. One of this kind of crimes is sexual abuse which is defined as sexual offending against the individuals who are incapable of giving consent. Although public view regarding to elder people sexuality is seen as they are incapable of this kind of acts because of their age, the statistics showed that contrary. Yet the reasons behind the offending behaviour of these elderly people is explained little by the researchers. The aim of this chapter is to review the psychological perspective including neurobiological, psychiatric, cognitive and behavioural perspective. Neurobiological and psychiatric approach mainly focused on disease that lead to criminal conduct like dementia or paedophilia. Cognitive approach emphasises the cognitive distortions regarding to sexual abuse behaviour. Behavioural approach proposed that the learning process based on classical conditioning and operant conditioning determine the sexual abuse behaviour. Yet none of the theories alone not enough to explain the sexual abuse behaviour in elderly people. There is a need for more studies on sex offending behaviour of elderly people in order to have comprehensive understanding of their behaviour and to put forward new theoretical models.

The relationship between accessing indecent images online and the perpetration of contact child sex offences remains unclear. The purpose of this paper is to provide a better understanding of the offence process of offenders who have both such convictions.

A total of eight semi-structured interviews were conducted with older adult males who had downloaded indecent images and also had a history of contact sex offences against children. Data analysis involved thematic coding based on guidelines suggested by Braun and Clarke (2006).

Themes which emerged suggest some similarities (offence process behaviours), but also some differences (developmental factors) between the eight offenders. Data relevant to developmental factors formed two primary themes: childhood attachment difficulties and experiences of childhood abuse, both of which appeared to influence the offence process. Escalating factors generated a further three themes: adult relationships, personality problems and substance use. Five main categories also emerged with regard to offence behaviours: sexually deviant interests, lack of self-control, opportunity, the role of the internet (availability, easy access and anonymity), and cognitive distortions (justifications: interest in challenge and sexual frustration; denial: accidental access and denial of a victim, normalisation; blame: blame on the victim, new technologies and authorities and blame on other factors; and minimisation).

A better understanding of the offence process would inform clinical practice with such offenders and aid in the process of prevention.

This is the first research to date which explores the rationale provided for their behaviour by those convicted of both internet and contact child sex offences.

The purpose of this paper is to evaluate the ability of a comprehensive set of covariates to distinguish and predict juvenile sex offenders (JSOs) from non-sexual juvenile offenders (NSJOs) using demographic traits, criminality covariates, childhood trauma, and psychopathologies in a sample of male and female juvenile offenders in the USA.

A multivariate binary logistic regression will be conducted on a total of 64,329 juvenile offenders in Florida to determine what demographic, criminal history, childhood traumas, and psychopathologies make a difference in identifying sexual and NSJOs while controlling for the other key predictors in the model.

Results indicate that having an earlier age of criminal onset and more felony arrests, experiencing sexual abuse or being male, having low empathy, high impulsivity, depression, and psychosis all significantly increase the risk of sexual vs non-sexual offending among the male and female juvenile offenders, even while controlling for all other key covariates in the analysis.

This study uncovered many new findings regarding the key distinguishing traits of juvenile sex offending vs non-sexual offending, using a comprehensive list of predictors, a large sample of male and female offenders, and a rigorous statistical methodology.

Transgender sex offenders are a small, complex and atypical group. The purpose of this paper is to highlight the issues in relationship to the assessment of gender dysphoria in transgender sex offenders and approaches to risk management.

Clinical and research experience as a Gender Specialist and Consultant Forensic Psychiatrist who has managed sex offender populations has informed this publication.

Little is known about the relationship between gender dysphoria and criminality. More research is required to develop a typology of transgender sex offenders and develop actuarial risk instruments. Protective factors in relation to gender affirmative care are also important to understand.

There is little empirical research to guide gender specialists and criminal justice professionals in the management of gender dysphoria and address risk and recidivism in transgender offender populations. The treatment of gender dysphoria could result in improved well-being and better psychosocial adjustment but cannot be relied to reduce future recidivism.

There is no evidence that treatment of gender dysphoria reduces risk and recidivism in transgender sex offenders and that research is required to identify specific gender related dynamic risk factors.

Recommendations are directly relevant to the work of prison and probation staff, community supervisors and gender identity specialists.

As far as the author is aware it is the first paper on the assessment and management of gender diverse sex offenders integrating approaches to gender dysphoria assessment and treatment and risk management. It has implication for gender identity specialists, criminal justice professionals, research and policy.

Studies have found innate vulnerabilities which potentially may increase the risk of an individual with autism spectrum disorders (ASD) finding themselves involved with the criminal justice system as a result of being charged with a sexual offence. The purpose of this paper is to evaluate the literature which has explored sexual offending in individuals with ASD.

A systematic PRISMA review (PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-Analyses) was conducted using internet-based bibliographic databases (PsycINFO, MEDLINE, Psychology and Behavioural Sciences Collection and PsycARTICLES) in order to access studies which investigated to any degree the association between ASD and sexual offending.

Only a small number of case reports (n=7) on sexual offending in individuals with ASD and a small number of prevalence studies (n=7) were identified.

Research is urgently required to identify the specific requirements and needs of sexual offenders with ASD in order to inform an appropriate treatment strategy for successful outcomes.

Relatively few studies and reviews have investigated the area of ASD and sexual offending specifically.

This article reviews the literature on personality disorder in offenders with learning disabilities, using Medline, PsychoInfo and CINAHL databases, and search terms ‘offending’, ‘personality disorder and intellectual disabilities’, ‘learning disabilities’ and related terms. Methods of defining offending population, personality disorder and learning disabilities vary greatly, and few studies focus specifically on personality disorder, learning disability and offending. The definition of learning disability often encompasses both borderline learning disability and low average intelligence. Personality disorder, especially anti‐social personality disorder, is prevalent in offenders with learning disabilities, but less than in the general population, and is associated with higher levels of security and poorer outcomes. The study concludes that there is a continuum of offenders with borderline and mild learning disabilities, reflected in learning disability forensic services.

Sex Offenders with a Major Mental Illness (SOMMI) are doubly stigmatized, as these individuals are members of two highly marginalized social groups (Guidry and Saleh, 2004). Within each of these groups SOMMI only represent a small minority. For professionals seeking to base their practice in empirical research this has led to a significant problem since the literature related specifically to this group is both limited and hard to locate. Additionally, intensity of psychological risk factors varies as a function of psychiatric decompensation for some SOMMI making it hard to apply certain procedures that work with ordinary sexual offenders. The purpose of this paper is to provide a review of the relevant literature and recommendations for clinical practice that are responsive to the particular challenges posed by this unusual group of sexual offenders.

The current paper provides a review of literature on risk factors for sexual recidivism and validity of current risk tools as it pertains to SOMMI. Recommendations for risk assessment with SOMMI are provided.

The static actuarial tools appear to be useful with SOMMI. However, risk assessments measuring dynamic risk factors have poorer predictive validity. Additional factors that will need to be considered involve a possible higher recidivism rate for SOMMI and a variable relationship between major mental illness and sex offending with it sometimes predisposing, sometimes exacerbating existing risk factors, and sometimes mitigating risk.

There is a paucity of research and guidance in assessment and risk management of SOMMI. The current paper is the first to thoroughly explore the efficacy of current sex offender risk assessment tools with SOMMI and provide structured guidance for making decisions about risk and risk management needs for this challenging population.

Purpose – This chapter explores claims of social problem workers in criminal justice and mental health with regard to how to manage males who are identified as or self-identify as both victims and perpetrators (V/Ps) of sexual abuse. We also examine the claims of V/Ps with regard to how they manage their dual status.

Methodology – This chapter is based on an action research project on intervention services for V/Ps in Ontario, Canada. Our data include literature reviews, interviews with intervention professionals, V/P narratives, and a transcription of a stake-holder's workshop.

Findings – Intervention workers whose mandate is offender risk management state they give little attention to victimization-related issues of V/Ps, whereas workers in victims’ services often state that adult V/Ps are not covered under their mandate. This suggests that the status of offender is the master status for adult V/Ps. Our V/P narratives recount efforts at self-management and some V/Ps and intervention professionals have expressed interest in the possibility of developing programs specially designed for V/Ps.

Practical Implications – An examination of issues related to the dual status of sexual abuse V/Ps suggests that V/Ps may require special services that cannot be provided by existing programs for perpetrators and victims.

Originality/Value of Paper – Studies of social problem work might benefit from considering not only professionals’ viewpoints but also those of their clients. This chapter explores new intervention models (GLM and RJ) that incorporate ethical concerns based on a rights perspective (“moral repair”) and the experiential concerns of V/Ps.

This study summarises the results of a cognitive‐behavioural treatment group for sexual offenders (n=14) with intellectual limitations in the community.

All participants were convicted sex offenders serving probation orders or prison licences who attended a 14‐month treatment programme designed for sex offenders with intellectual limitations. The programme comprised of five main components: sex education; cognitive distortions; offending cycle; victim empathy; and relapse prevention. All participants completed psychometric measures specifically designed for people with intellectual limitations before and immediately after completing the treatment programme. The four core measures include: Victim Empathy; Sexual Attitudes and Knowledge Assessment (SAK); Questionnaire on Attitudes Consistent with Sexual Offenders (QACSO); and Sex Offences Self‐Appraisal Scale (SOSAS).

Post assessment results reveal significant improvements in sexual offence related attitudes; reductions in attitudes relating to cognitive distortions and pro‐sexual assault beliefs; and significant improvements in victim empathy.

Although none of the participants have been reconvicted for committing new sexual offences during the follow‐up period, given that the follow‐up was restricted to 12 months post‐treatment, it is not possible to conclude this intervention was successful in reducing risk of sexual recidivism.

The results from this study support the use of cognitive‐behavioural approaches in demonstrating positive cognitive shift (reconstructing cognitive distortions and attitudes to victim empathy) for sexual offenders with intellectual limitations.