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The purpose of this paper is to examine temperament differences, notably effortful control and negative emotionality, and correlates that distinguish between homicide, violent sexual and other violent juvenile offenders. Exploring heterogeneity among violent offenders is relevant to intervention strategies and policy implications.

Demographic measures, temperament constructs and individual risk factor indicators were assessed across 30,303 violent juvenile offenders (including 397 homicide offenders) in Florida to assess their ability to distinguish among violent juvenile offender subgroups.

Analyses demonstrated temperament constructs distinguish among classifications of violent juvenile offenders with effortful control differentiating homicide and violent sexual offenders from other violent offenders, and negative emotionality distinguishing violent sexual from other violent offenders, with youth having greater negative emotionality and less effortful control being non-sexual violent offenders. Homicide offenders were more likely to be older, male and had histories of gang membership and weapon/firearm offending than other violent offenders, and evidenced greater negative emotionality than violent sexual offenders.

The differences across violent youthful offender subtypes suggest heterogeneity among violent offenders with distinct correlates more predictive of some subtypes than others. Additionally, the temperament constructs of effortful control and negative emotionality are useful in distinguishing violent offender subtypes, which points toward differing intervention/treatment strategies.

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.

In this chapter, an exploratory analysis of the problematic sexual behaviours committed by elderly men against female minors is presented. Drawing from life-course theoretical perspectives on later life offending, this study examined the criminal history, sexual attraction towards the underage, perceived vulnerability of the juvenile, relationship with the girl-child prior to the abuse, and violence and sexually abusive tactics of the older offenders. Qualitative data were collected from 19 child sexual offenders in Lagos state prisons that were 60 years and above at the time they committed the offence, and a thematic analysis of the narratives was carried out. Findings indicate elderly offenders were attracted to female juveniles due to their perceived ‘innocence’, ‘commitment to relationship’, ‘sincerity’ and ‘youthfulness’, which suggest considerable level of rationality in their selection of victims. Offenders were found to use physical force and violence to subdue their victims, while threats, gifts and appeal were used to prevent victims from reporting. These findings have important practical and policy implications if the scourge of child sexual abuse is to be addressed in the country.

This paper aims to provide a critical review of the psychopathy literature, with a particular focus on recent research examining the relationship between psychopathy and various forms of criminal behaviour.

The authors provide an overview of the studies conducted to date. To identify relevant published studies for this review, literature searches were completed using Web of Science, Scopus, PsychINFO, and PubMed.

Substantial empirical research exists to suggest that psychopathy is a robust predictor of criminal behaviour and recidivism. Furthermore, considerable support for the assertion that the violence perpetrated by psychopathic offenders is more instrumental than the violence committed by other offenders was found. In addition, some research suggests that the greater use of instrumental violence among psychopathic offenders may be due to the interpersonal/affective traits of psychopathy, and not the impulsive/antisocial traits.

The current paper is the first to provide an in‐depth review of the literature examining the association between psychopathy and criminal offending with a particular focus on violent and homicidal behaviour.

The present study uses data from the National Longitudinal Study of Adolescent Health (Ad Health) to evaluate the effects of exposure to violent victimization in childhood on adolescent delinquency and subsequent adult criminality.

Using Longitudinal Latent Class Analysis (LLCA), the present study investigates whether there are distinct and diverse longitudinal delinquency trajectories among those exposed to violence in childhood.

Findings from the current study indicate that there are three distinct trajectories of delinquency and offending from age 14 to 27 for both males and females exposed to violence in childhood. Further, it appears that violent victimization in childhood bridges the gender gap in delinquency between males and females. Thus, childhood violent victimization, and the fact that females are victimized by parents/caregivers and romantic partners at higher rates than males, might be partially responsible in explaining the narrowing of the gender gap between male and female offending in the recent decades. At the same time, childhood violent victimization also seems to impact males and females in somewhat different ways. Practically, all female victims stop offending by their late 20s, whereas a fairly large proportion of males exposed to violent victimization in childhood steadily continue offending.

Although this study was able to identify the diverse impacts of violence exposure on engagement in subsequent delinquency, it did not examine the unique contributions of each type of violence on adolescent outcomes or the chronicity of exposure to each of these types of violent victimization. We were also not able to measure all types of violence experiences in childhood, such as exposure to parents’ or caregivers’ intimate partner violence.

While early prevention would be the most desirable option for both genders for the most optimal outcome, the retrospective intervention and treatment programs should be gender-specific. For males, they should heavily focus on providing alternative ways to cope with anger, impulse control and frustration, as well as teach empathy, cognitive problem solving skills, verbal communication skills, and tangible life and job skills. For females, most successful intervention and treatment programs may focus on helping the girls through a transition from adolescence to adulthood while providing mental health, medical, and family support services.

The paper uses a unique methodological approach to identify distinct and diverse longitudinal delinquency trajectories. The findings demonstrate how more resilient individuals (in terms of externalizing behaviors) can bring down the mean scores of delinquency even though many other individuals can be severely affected by violence exposure in childhood.

Sexual sadism is a well-known risk factor for severe forms of sexual violence including sexual homicide and serial sexual homicide. The research is decidedly mixed about the association between sexual sadism and other, nonsexual forms of criminal conduct. The paper aims to discuss these issues.

Drawing on data from a census of 225 federal sex offenders from a jurisdiction in the Midwestern USA, the current study examined whether sexual sadism had a spillover effect into nonsexual crimes using correlation, ANOVA, and negative binomial regression models.

Sexual sadism was strongly associated with diverse forms of nonsexual criminal behavior, and sexual sadists had more extensive and versatile criminal careers than sex offenders without a formal diagnosis.

Practitioners should be aware of sexual sadism as a criminogenic risk factor. Sexual sadism is associated with sexual deviance and sexual violence. Sexual sadism also has spillover effects where it is associated with nonsexual offending.

Sexual sadism can be a useful risk factor for other forms of crime and recidivism and has broad application in applied correctional and research settings.

This paper explores the link between sexual offending and antisocial personality. Drawing on previous research, it illustrates that sex offenders with an antisocial personality are a heterogeneous group, differentiated by several factors. They victimise children, adults or both, those who victimise adults or adults and children are more psychopathic. They are motivated primarily by non‐sexual factors like opportunistic impulsivity or generalised anger, and violence is a source of erotic pleasure in some cases. A small group of men, however, are driven to offend by sadistic sexual fantasies of a serious nature, which develop over time and later form the basis of their violent predatory assaults. Varying definitions of antisocial personality confuse the research, and diagnostic co‐morbidity means that pure psychopathic types are probably rare.

The prevalence of diabetes among 915 sexual, violent, and non‐violent non‐sex offenders was found to be more than twice the prevalence in the general population. Diabetes was most common among violent offenders and among sex offenders who victimized children. The older diabetics presented significantly more often with cognitive impairment and younger diabetics more often with manic and psychotic symptoms. Younger diabetics were significantly more likely to use force and a weapon in their offenses and were most likely to injure their victims when compared to older diabetics and younger and older non‐diabetic offenders. In more than one in four cases, the diabetes was undiagnosed at the time of their offenses prior to clinical assessment, suggesting that undiagnosed diabetes may be a possible mitigating factor in some sexual and violent offenses. Results indicate that a routine endocrine evaluation with blood tests would be a valuable addition to the assessment of violent and sexual offenders.

Effective treatments for juvenile sexual offenders are needed to reduce the societal impact of sexual crimes. The purpose of this paper is to review the empirical literature on treatments for this clinical population.

The authors searched PsycInfo and MEDLINE (via PubMed) for studies that evaluated outcomes of treatments with juvenile sexual offenders.

There are a small but growing number of treatment studies (n=10) with juvenile sexual offenders, and all of these studies evaluated cognitive-behavioral therapy or multisystemic therapy for problem sexual behaviors. The results of these studies are promising, although conclusions about treatment effectiveness have been frequently limited by methodological problems.

The authors provide recommendations for treatment providers and policymakers to consider in their decisions about interventions for juvenile sexual offenders. Furthermore, the authors offer suggestions for researchers who seek to develop effective interventions targeting this clinical population.

Little is known about the health needs of detained juvenile females, yet there is emerging concern regarding substance misuse, mental health problems, poor sexual health and poorer general physical health on a range of indicators. This study sought to identify health needs from the perspective of imprisoned young women themselves and key professionals working with them to inform healthcare provision. We conducted semi‐structured interviews and focus groups with detained juvenile women and adult professionals in four specialist female young offender institutions. The study presents new qualitative findings on the profound impact of social exclusion and multiple forms of abuse and victimisation on the health of juvenile women prisoners. Concerns regarding substance misuse, mental health problems, self‐harm and poor sexual health are reinforced by this study. Young women tended to focus on their immediate health needs in contrast to the professionals who emphasised longer‐term issues. The study identified the need for priority interventions in relation to mental health, substance misuse, self‐harm and sexual health and tentatively suggests that ‘compensatory care’may offer some scope to redress health inequalities experienced by these young women.