Criminal diversity and paraphilic interests among adult males convicted of sexual offenses against children

Official demographic and offense history data (n = 362) and confidential self-report data on paraphilic interests and behavior (n = 221) obtained on adult males convicted of sexual offenses against children were analyzed. Considerable criminal diversity was observed, with all standard categories of offenses represented in offenders' criminal histories. Most (86%) of the offenders' previous convictions were for nonsexual offenses, and most (92%) of the recidivist offenders had previously been convicted of at least one nonsexual offense. The prevalence of diagnosable paraphilias was low, with only 5% meeting formal diagnostic criteria for multiple (two or more) paraphilias other than pedophilia. Sexual offenders' paraphilic interests were unrelated to the extent of their sexual offense convictions but were significantly related to the extent of their nonsexual offense convictions. The results are better explained by a general theory of crime than by traditional clinical conceptions linking sexual offenses specifically with sexual psychopathology.     

Female Sexual Homicide Offenders: A Descriptive and Comparative Study

Research on female sexual homicide has been very scarce. In Europe, it has rarely been examined, and in Scotland, it has never previously been studied. This exploratory study aims to examine the characteristics of sexual homicides involving female offenders between 1990 and 2015 in Scotland. Using data from the Scottish Homicide Database between 1990 and 2015, female sexual homicides (n = 7) were compared to nonsexual homicides committed by females (n = 106) and to sexual homicides committed by men (n = 89) using Fisher's exact tests. The findings show that although female sexual homicide offenders are similar to both female nonsexual homicide offenders and male sexual homicide offenders in certain aspects, there are important differences that distinguish sexual homicides involving female offenders from both groups. Female sexual homicide offenders can arguably be seen as a distinct group of offenders, with specific characteristics and specific needs.     

Juvenile Sex Offenders: Differences between Group and Solo Offenders

We report on findings from a study into differences in personality and background characteristics between juvenile sex offenders who commit their sex offenses on their own and those who do so in a group. Solo offenders were found to score significantly higher on neuroticism, impulsivity and sensation seeking, but scored lower on sociability. In addition, the solo offenders in the sample were more often recidivists for sexual offenses, and were more often themselves a victim of a sexual offense. Solo offenders were significantly older than juveniles who had committed a sexual offense with a group. On the basis of these results we recommend differential treatment for the two types of offenders.     

Sexually violent predators and civil commitment: is selection evidence based?

Sexual offenses represent an alarming proportion of crimes committed yearly. To address these concerns, several states, including South Carolina (SC), have enacted laws requiring sexually violent predators (SVPs) to be civilly committed to treatment. To date, no published study has examined sexual offenders recommended for treatment in SC. This study used a specially designed statewide database (SC-SVP research database) to determine which offender and offense characteristics were associated with increased likelihood of being recommended for civil commitment. Factors correlated with being more likely to be recommended included: being of a younger age at time of evaluation, prior sex convictions, having related and unrelated victims, a higher number of victims, frequent substance use, and a history of suicide attempts. Prior sex convictions, having both related and non-related victims, and a higher total number of victims align with characteristics associated with sexual recidivism. Frequent substance abuse and a history of suicide attempts do not mirror previous findings regarding sexual recidivism. These findings present new information regarding the civil commitment process of offenders being committed to the SC-SVP treatment program, characterize types of offenders committed to SC-SVP treatment program, and provide a foundation for using a computerized database in conducting sex offender research.     

Comparing Sexuality,Aggressiveness, and Antisocial Behavior of Alleged Juvenile Sexual and Violent Offenders,

Sexual delinquency in juveniles is insufficiently explored in regard to the specificity of offender characteristics. The aim is to investigate relevant areas for juvenile sexual offending in a precourt, pretreatment group. Thirty‐two alleged juvenile sexual offenders (ASO) referred to by police were compared with 32 juvenile nonsexual violent offenders (VNO) on standardized measures of aggressiveness and psychopathology, antisocial behavior, substance use problems, and sexuality. Less externalizing disorders and antisocial behavior were found among the ASOs than among the VNOs. The ASO group was sexually less experienced, had less trust in their relationship abilities, fewer victimization experiences, and reported more sexual deviance, while pornography use and obscene calls were reported less often. Few juvenile sexual offenders had severe problems in the investigated areas. Including groups of offenders before court, treatment or incarceration in research appears crucial to understand the full spectrum of sexual deviance in youth and avoid misguidance due to selection factors.     

A comparison of rapists and sexual murderers on demographic and selected psychometric measures

This study compared 58 sexual murderers and 112 rapists who were about to undergo treatment in prison for their sexual offending behavior. The two groups were compared on background, personality, offense, and victim characteristics. The sexual murderer group were less likely to have been involved in a relationship at the time of their index offense, generally attacked older victims, and had higher self-esteem. The rapist sample were found to have more violent previous convictions and scored higher on measures of historical deviance (nonsexual), paranoid suspicion, and resentment. No differences were found on the personality or clinical syndrome scales of the Millon Clinical Multiaxial Inventory-III. However, the rapist sample had significantly higher mean scores on the Paranoid Suspicion, Resentment, and Self-Esteem subscales of the Antisocial Personality Questionnaire. Future research should compare the two groups on dynamic or changeable factors to determine differential treatment needs.     

Japanese Sexual Offenders: A Descriptive Study

Young adult male offenders in Japanese correctional institutions were questioned confidentially about their history of sexual abuse. The self‐reported information showed that when the sexual abuse went undetected, the relationships between abuser and victim were closer, and more victims were reported to be under the influence of substances. At the same time, the nature of the sexual abuse was even more serious among self‐reported‐only (undetected) offenders in terms of direct sexual acts. In terms of unhealthy sexual preference and childhood sexual victimization, sexual abusers reported higher level of problems comparing to nonsexual abusers. Self‐reported‐only sexual abusers identified even more problems than officially identified sexual offenders. The results suggest that when we focus only on the characteristics shown by officially identified sexual offenders, we may overlook important risk and need factors that should be addressed in psychotherapy for preventing future reoffending.     

Severe Sexual Sadism—An Underdiagnosed Disorder? Evidence from a Sample of Forensic Inpatients

Abstract:  Severe sexual sadism is a disorder of sexual preference that focuses on humiliation and subjugation of the victim, sometimes causing grievous injury or death. Sexual sadists pose a particular risk. However, the diagnosis as such is unreliable and prevalence estimates vary. In a sample of male high-security forensic inpatients who had committed sexual offenses, we found two-thirds of sexual sadists had not been identified as such prior to commitment. Possible reasons for missing the diagnosis are many fold. Present data support the notion that unrecognized sexual sadists more closely resembled non-sadistic sex offenders than accurately diagnosed sadists. In particular, initially unrecognized sexual sadists had less severe previous convictions, less vocational training, and experienced a less supportive upbringing than their correctly identified sadistic counterparts. The latter, in contrast, more often reached media coverage through their offense(s). We conclude that severe sexual sadism is likely an underdiagnosed, yet forensically highly relevant disorder.     

Differences in Psychosexual Development Among Child,Peer, and Mixed Juvenile Sex Offenders

Researchers have examined a number of typologies of juvenile sex offenders, including victim age. Using data from psychological evaluations and the Multiphasic Sex Inventory-II (MSI-II; [Psychological assessment of sex offenders, 2010 ]), this study compared child offenders (i.e., victims were more than 4 years younger), peer offenders (i.e., victims were 4 years younger or less), and mixed offenders (i.e., both child and peer victims) on variables including victim, offender, and offense characteristics, and psychosexual development. Peer offenders had more severe sexual offenses, prior status/nonviolent charges, and issues with sexual functioning. Mixed offenders began offending at a younger age and were indiscriminate in gender and relationship of the victim. Mixed offenders were also more likely than child and peer offenders to have prior sex offender treatment, meaning they had previously failed treatment. As juvenile sex offenders are a heterogeneous group, these research findings suggest that child offenders, peer offenders, and mixed offenders’ treatment needs differ from each other.     

Factors associated with contact child sexual abuse in a sample of indecent image offenders

Abstract

This study explored a sample of 244 UK adult male offenders convicted of offences involving indecent images of children (IIOC): 120 had a previous contact child sexual offence (defined as dual offenders) and 124 had no evidence of an offence against a child (defined as non-contact offenders). Offender groups were compared regarding their socio-demographic characteristics, previous convictions and IIOC possession. Key discriminatory factors that differentiated dual offenders were: access to children, previous offence history, sexual grooming and possession of IIOC that depicts similar-aged victims. In contrast, non-contact offenders could be identified from their greater amount and wider range of IIOC possession. The results suggest a homology between Internet behaviours, IIOC possession and victim selection. Implications for law enforcement agencies are discussed in terms of assisting investigative prioritisation by identifying those most at risk of committing sexual abuse against children.     

Comparing persons found not criminally responsible on account of mental disorder for sexual offences versus nonsexual violent offences

Using data from the National Trajectory Project, we compared 50 individuals found Not Criminally Responsible on account of Mental Disorder (NCRMD) for sexual offences with 50 age- and gender-matched individuals found NCRMD for nonsexually violent offences. We also described the concurrent offenses, the symptoms at the time of the offense and the characteristics of the victims of offenders found NCRMD for sexual offences. Persons found NCRMD for sexual offences were less likely to be employed and were significantly younger at time of first psychiatric contact, but did not differ in other sociodemographic characteristics, other aspects of their psychiatric histories or in criminal history. Despite no differences in recidivism and no differences in behaviours between Review Board hearings when adjusting for unequal time at risk, persons found NCRMD for sexual offences had longer tenures under a Review Board mandate than persons found NCRMD for nonsexually violent offences. Given the many similarities between the two groups, this finding suggests that Review Boards may be unnecessarily conservative in how they manage sexual offenders.     

A prospective analysis of juvenile male sex offenders: characteristics and recidivism rates as adults

This research assesses the recidivism rates of a sample of 300 registered male sex offenders who were juveniles at the time of their initial arrest for a sex offense. This sample is followed for 3 to 6 years after they reached adulthood; recidivism rates are assessed during their adulthood only. The typical juvenile is a 15-year-old Caucasian male who was arrested for sexual assault or indecency with a child. The majority of the victims are females with an average age of 8. Although only 13 are rearrested during the follow-up period for a sex offense, more than half of the sample is arrested at least once for a nonsexual offense. The results of a Cox regression indicate that victim age, offender age, and victim sex are significant predictors of recidivism during adulthood.     

The impact of race and extra-legal factors in charging defendants with serious sexual assault: Findings from a five-year study of one Pennsylvania court jurisdiction

Research on sexual assault case processing remains mixed regarding how extra-legal factors such as the racial-ethnic composition of the defendant-victim dyad may impact prosecutorial decision-making. We use data from 2006–2010 in a Pennsylvania county court jurisdiction to examine the victim- and defendant-related factors that influence charging decisions. We also explore how the demographic and offense characteristics influence decisions to prosecute offenders for more serious types of sexual assault. Our findings indicate that the racial composition of the defendant-victim dyad contributed to the prosecutorial decision to charge an offender with a more serious sexual assault, while victim characteristics and use of violence during the offense were not related to seriousness of the charge.     

Incarceration and Recidivism among Sexual Offenders

The relationship between incarceration and recidivism was investigated in a sample of 627 adult male sexual offenders. Incarceration for the index offense was unrelated to sexual or violent recidivism. This was the case whether incarceration was examined as a dichotomous variable (incarceration vs. community sentence) or as a continuous variable (length of incarceration). Risk for sexual recidivism was assessed with a modified version of the Rapid Risk Assessment for Sexual Offense Recidivism. There was no evidence that the relationship between incarceration and recidivism was confounded or moderated by risk or that length of incarceration and recidivism were non-linearly associated. Sentencing sexual offenders to terms of incarceration appears to have little, if any, impact on sexual and violent recidivism following release.     

Psychiatric and Forensic Differences Between Men Charged with Sex Offences and Men Charged with Other Offences

Studies on differences between individuals convicted of sexual offences and nonsexual offences are sparse and there is an on-going debate as to whether sexual offenders differ from other offenders. The primary aim of this study was to determine demographic characteristics, prevalence of mental disorders, alcohol and drug use at the time of the crime and the criminal responsibility of individuals charged with sexual offences, compared to nonsexual crimes, with the aim of bringing awareness to the similarities and differences between men charged with sex offences and those charged with other crimes. This is a single-institution retrospective study of subjects charged with sexual offences and sent for institutional psychiatric evaluation to a Forensic Psychiatric Centre in an urban, academic, tertiary-care center. The control group consisted of individuals charged with nonsexual offences referred to the same center. Results showed significant differences between individuals charged with sexual offences and nonsexual offences. Men charged with sex offences more frequently committed their crimes alone and victimized children equally as often as adults. They also less frequently pleaded guilty in court. They were more likely to be abused in childhood and more often had antisocial personality disorder and paraphilias and less often substance-related disorders. The majority were considered criminally responsible. Our results show that sex offenders are different from nonsex offenders in many characteristics of their personal history, offence characteristics and forensic evaluations and these particular differences warrant different approaches to the prevention of future re-offending, compared to nonsex offenders.     

Developmental Pathways in Youth Sexual Aggression and Delinquency: Risk Factors and Mediators

Childhood exposure to violence against females and male-modeled antisocial behavior were examined as risk factors for sexual aggression, and nonsexual aggression and delinquency, in a sample of 182 adolescent male sex offenders using structural equation modeling. Both risk factors produced direct and indirect effects on nonsexual aggression and delinquency with Psychosocial Deficits and Egotistical–Antagonistic Masculinity playing important mediating roles. Exposure to violence against females helped explain sexual aggression through the mediating role of Psychosocial Deficits. As hypothesized, youth who sexually offended against prepubescent children manifested greater deficits in psychosocial functioning, committed fewer offenses against strangers, and demonstrated less violence in their sexual offending than offenders against pubescent females. Findings are discussed within the context of two major evolutionary psychological concepts for explaining human sexual behavior: intrasexual selection and intersexual selection.     

Social networks of sexual offenders

Abstract

Despite the extensive research attention directed toward criminal peer groups, there has been little attention to the peer groups of sexual offenders. Sexual offenders are often considered to be loners who offend in isolation, but cases of sex crimes involving peer support are not difficult to find, e.g., child sex rings, gang rapes. To examine the role of peers in sexual offending, sexual offenders and nonsexual offenders were asked whether they knew other people who have committed sexual crimes. In comparison to the nonoffender community comparison group, the sexual offenders reported considerably more association and identification with sexual offenders. The associations also tended to be offence specific, such that child molesters knew other child molesters and rapists knew other rapists. These findings have important implications for the assessment and treatment of sexual offenders.     

Examining the Criminal History and Future Offending of Child Pornography Offenders: An Extended Prospective Follow-up Study

We examined police occurrence and criminal records data for a sample of 201 registered male child pornography offenders originally reported by Seto and Eke (Sex Abus J Res Treat 17:201–210, 2005), extending the average follow-up time for this sample to 5.9 years. In addition, we obtained the same data for another 340 offenders, increasing our full sample to 541 men, with a total average follow-up of 4.1 years. In the extended follow-up of the original sample, 34% of offenders had new charges for any type of reoffense, with 6% charged with a contact sexual offense against a child and an additional 3% charged with historical contact sex offenses (i.e., previously undetected offenses). For the full sample, there was a 32% any recidivism rate; 4% of offenders were charged with new contact sex offences, an additional 2% of offenders were charged with historical contact sex offenses and 7% of offenders were charged with a new child pornography offense. Predictors of new violent (including sexual contact) offending were prior offense history, including violent history, and younger offender age. Approximately a quarter of the sample was sanctioned for a failure on conditional release; in half of these failures, the offenders were in contact with children or used the internet, often to access pornography again.     

Sex Offenders of East Asian Heritage Resemble Other Canadian Sex Offenders

Although there is considerable research on Caucasian sexual offenders, there has been much less research on sex offenders of Asian heritage. The current study compared East Asian (e.g., Chinese, Japanese, and Korean) sex offenders in British Columbia (B.C.), Canada, and other B.C. sex offenders on items and total score of Static-99R. This study included all provincially sentenced adult male sexual offenders (n = 4580) supervised in the community by B. C. Corrections (including 122 East Asian sex offenders). Sexual, violent, any crime, and any recidivism (including technical violations) data were collected with an average follow-up 4.3 years. The total scores of Static-99R were similar between East Asian sex offenders and other ethnic groups (M = 2.0 vs. M = 2.4). East Asian offenders scored significantly lower than other ethnic offenders on several items measuring general criminality (e.g., prior non-sexual violence, prior sentencing dates, and any prior sex offenses). In contrast, Asian offenders appeared to be more paraphilic (e.g., any convictions for non-contact sex offenses). Lastly, Static-99R significantly predicts sexual, violent, and criminal among sex offenders of East Asian heritage.