Risk assessment with intimate partner sex offenders

Abstract

Risk assessment with any offender presents a number of challenges. However, risk assessment with offenders who have committed offences against their partners presents practitioners with a number of additional challenges. Intimate Partner (IP) sex offenders are reported to be responsible for the majority of adult serious sexual offences in England and Wales. However, despite calls for a unified approach to sex offender theory there has been little integration between this and the IP and family sexual violence literature. This paper summarizes the relevant literature on prevalence and cross over of sexual abuse by IP offenders, patterns of abuse, generality of offending, psychopathology and risk concerns (including risk of intimate partner homicide). Based on this, recommendations are made for best practice with IP sex offenders.     

Employing mixed methods to explore motivational patterns of repeat sex offenders

PurposeUnderstanding the motivation of sex offenders plays a key role in societal perception of victim culpability and offender responsibility. This study identified patterns of offender motivation, assessed motivation stability across offenses, and estimated the influence of offense/victim specific factors on motivation in comparison to offender factors.MethodsEmploying mixed-methods sequential explanatory research design, the study utilized confirmatory factor analysis (CFA) to identify motivational factors underlying 346 crime events. Second, motivation stability was assessed across offenses committed by 69 offenders. Finally, interview data were reviewed to assess whether offender types emerged corresponding to CFA results.ResultsA motivational typology was identified comprised of five offender groupings built upon two underlying constructs, one driven by sexual gratification and the other linked to anger/aggression. Minimal change in motivation was observed across offenses committed by the same offender against different victims. Offense/victim specific influence (22-23%) and offender related influence (77-78%) were similarly distributed with both sexual and anger-driven motivation.ConclusionsMotivation plays a key role in offending. Offense/victim specific factors have similar proportional influence on crime motivation in comparison to offender factors irrespective of the type of motivation. Contrary to popular public perception, victim blame is not warranted regardless of what motivates offenders.     

Juvenile Involvement in Fratricide and Sororicide: An Empirical Analysis of 32?Years of U.S. Arrest Data

Despite the interest in juvenile homicide offenders, few studies have systematically examined their involvement in incidents involving specific victims. This study focused on one victim type, the killings of siblings. To date, siblicide research has been based primarily on case studies. Bivariate and multivariate techniques were used to systematically investigate offender, victim, and incident characteristics associated with fratricides and sororicides committed by juvenile homicide offenders in single victim, single offender incidents over a 32-year period (1976–2007), as recorded in the Supplementary Homicide Report data base. Juvenile sororicide offenders, relative to juvenile fratricide offenders, were significantly more likely to be female and to kill younger victims. The article concludes with a discussion of the findings in terms of past research, their implications for intervention and prevention, and directions for future research.     

Testing the impact of group offending on behavioural similarity in serial robbery

Behavioural case linkage assumes that offenders behave in a similar way across their crimes. However, group offending could impact on behavioural similarity. This study uses robbery data from two police forces to test this by comparing the behavioural similarity of pairs of lone offences (LL), pairs of group offences (GG) and pairs of offences where one crime was committed alone and the other in a group (GL). Behavioural similarity was measured using Jaccard's coefficients. Kruskal–Wallis tests were used to examine differences between the three categories within the linked samples. No statistically significant differences were found for linked GG compared to linked LL pairs. However, differences emerged between GL and the other categories for some behaviours (especially control) suggesting caution should be applied when linking group and lone offences committed by the same perpetrator. Differences between linked and unlinked pairs were assessed using receiver operating characteristic. The results suggest it is possible to distinguish between linked and unlinked pairs based on behaviour especially within the GG and LL categories. There were, however, fewer significant findings for the GL sample, suggesting there may be issues linking crimes where the offender commits one crime as part of a group and the other alone.     

Crime profiles and conditional release performance of psychopathic and non‐psychopathic sexual offenders

Purpose. This study investigated the influence of psychopathy and sex offender subtype on criminal history, probability of being granted conditional release, and performance while on conditional release in a diverse group of violent offenders. We predicted that psychopathic sexual offenders would be associated with relatively prolific violent and sexual offending, a high probability of successful conditional release applications despite their past behaviour (resulting from ‘putting on a good show’ in a parole hearing), and poor performance in the community. Methods. Information was gathered via a correctional file review of 310 Canadian male federal offenders. Offenders were categorized into groups based on their sexual offence history (non‐sex offender, rapist, child molester, or mixed rapist/molester) and Psychopathy Checklist – Revised (PCL‐R; Hare, 2003) ratings. Their offences (sexual, violent, or non‐violent) and their complete conditional release histories were coded. Results. Psychopathy was associated with more violent and non‐violent, but not sexual, offences. A significant interaction between psychopathy and offender subtype revealed that psychopathy was associated with a greater number of sex offences within child molesters. High‐psychopathy offenders (both sexual and non‐sexual offenders) were about 2.5 times more likely to be granted conditional release than non‐psychopathic offenders. Conclusions. Psychopathy is associated with more prolific sexual offending among child molesters and – despite their extensive criminal histories and high recidivism rate – a great proficiency in persuading parole boards to release them into the community. Specialized education and training in dealing with psychopathic offenders is urgently needed.     

The relationship between the detection of acquisitive crime by forensic science and drug-dependent offenders

Drug- and nondrug-related acquisitive crime offences such as burglary, theft, and motor vehicle theft, were compared to assess whether drug abusers were more likely to be apprehended via forensic science techniques. Data were all acquisitive offences committed over a 6-year period within a police force area in England. Drug-dependent offenders committed a wider range of offence types than nondependent offenders, and they were significantly more likely to be detected via their DNA or fingerprints (p < 0.01). A logistic regression (n > 14,000) revealed a number of predictors that influence the detection of the crime by forensic techniques. The results indicate that a number of these predictors are of statistical significance; the most significant of these being drug use by the offender with sex, ethnicity, and employment status also being relevant. Age of the offender and number of offences committed were found not to be significant. Of the four hypotheses considered to explain this, the most likely was thought to be the physical and mental impact of drug use on crime scene behavior. Consideration is given to the disciplines of forensic science and forensic psychology working closely together to distinguish factors that influence crime scene behavior.     

Differences between Homicides Committed by Lone and Multiple Offenders in Korea

The aim of this study was to differentiate between homicides committed by multiple offenders and homicides committed by lone offenders. Using data on homicide incidents that occurred in South Korea between 1985 and 2008, we compared 134 homicides committed by multiple offenders, with 369 homicides committed by lone offenders. A greater proportion of homicides committed by multiple offenders involved injuries to the victim's head compared to homicides by lone offenders. Homicides committed by multiple offenders were more likely to involve blunt instruments and ligatures, whereas homicides by lone offenders were more likely to involve sharp instruments. In addition, a majority of the homicides committed by multiple offenders were planned. The results of this study have practical implications for homicide investigations, as well as theoretical implications for homicide research on the difference in offense behaviors based on the number of offenders.     

LIFE SPAN OFFENDING TRAJECTORIES OF A DUTCH CONVICTION COHORT*

The aim of this paper is to describe the development of criminal behavior from early adolescence to late adulthood based on conviction data for a sample of Dutch offenders. Measuring over an age span of 12 to 72, we ask whether there is evidence for (1) criminal trajectories that are distinct in terms of time path, (2) a small group of persistent offenders, (3) criminal trajectories that are distinct in the mix of crimes committed, or, more specifically, persistent offenders disproportionately engaging in violent offences, and (4) different offender groups having different social profiles in life domains other than crime. The analysis is based on the conviction histories of the Dutch offenders in the Criminal Career and Life Course Study. Four trajectory groups were identified using a semi‐parametric, group‐based model: sporadic offenders, low‐rate desisters, moderate‐rate desisters and high‐rate persisters. Analyses show that high‐rate persisters engage in crime at a very substantial rate, even after age 50. Compared to other trajectory groups the high‐rate persistent trajectory group disproportionately engages in property crimes rather than violent crimes. Also, these distinct trajectories are found to be remarkably similar across age cohorts.     

Male and female juveniles arrested for murder: a comprehensive analysis of U.S. data by offender gender

Murders committed by juveniles remain a serious concern in the United States. Most studies on juvenile homicide offenders (JHOs) have used small samples and have concentrated on male offenders. As a result, little is known about female JHOs and how they differ from their male counterparts on a national level. This study utilized the Supplementary Homicide Report (SHR) database to examine more than 40,000 murders committed by male and female juvenile offenders from 1976 to 2005. This research effort, the most expansive to date, replicated previous findings with respect to gender differences using bivariate and multivariate analyses. As predicted, six variables used to test eight hypotheses with respect to male and female JHOs in single-victim incidents were significant (victim age, victim-offender relationship, murder weapon, offender count, victim gender, and homicide circumstance). Regression analysis revealed that all variables remained significant when entered into the model. This article concludes with a discussion of our findings and directions for future research.     

The attribution of blame and type of crime committed: transcultural validation.

This study examines the relationship between type of offence and the attributions offenders make about their criminal act. The subjects were 98 Icelandic criminals who had completed the Gudjónsson Blame Attribution Inventory. Significant differences in attribution were found between offender groups. Sex offenders and those who had committed acts of interpersonal violence reported most guilt about their offence and they attributed cause for their offence more to mental factors (eg, loss of self-control) than other types of offender. Violent offenders had the highest external attribution and sex offenders the lowest. The findings with regard to the three attributions are remarkably similar to those found previously for British offenders.     

Association between homicide injury severity and benzodiazepine influence

There are case reports of offenders inflicting excessive injuries on their victims when under the influence of benzodiazepines. However, the potential association between benzodiazepine influence on the offender and victim injury severity in a general homicide population has not been studied. We investigated associations between offender positive testing for benzodiazepines or z-drugs (zolpidem, zopiclone and zaleplon) and victim injury severity. Data were drawn from 95 Swedish homicide cases from 2007–2009 in which offenders had known toxicology. There were no significant differences in injury severity between cases in which the offender tested positive vs. negative for benzodiazepines/z-drugs. Thus, the findings do not support the hypothesis that there is an association between benzodiazepine influence on the offender and victim injury severity in a general homicide population.

Key points

• Some previous studies have linked benzodiazepines to aggression, violence and excessive homicide injuries.
• The present study analysed the association between homicide injury severity and benzodiazepine status of the offender.
• Offenders who tested positive for benzodiazepines did not inflict more severe injuries on their victims.
• These findings do not support the hypothesis that benzodiazepine influence generally causes offenders to inflict more severe injuries on homicide victims.

     

Criminal history and social disadvantage as predictors of the severity of violent offending

ABSTRACT

Lethal violence is often seen as the tip of the iceberg and homicide perpetrators are seen as manifesting the most extreme number of various risk factors. This article explores whether that is the case. Using a unique data set combining data from several administrative registers with a nationally representative sample of different types of police-reported violence committed during 2010–2011 (N = 26,303 offenders) in Finland, we compare the offenders of five different types of violence (minor assault, assault, aggravated assault, attempted homicide, and completed homicide). In addition, we examine the association between the severity of violence and prior criminal history and different types of strain. The results give partial support to the hypothesis: the more serious the violence, the more crime prone and socially disadvantaged the offender. Yet, lethal offenders do not stand out alone; the division, rather, appears to be between offenders of serious (aggravated assault, attempted homicide, completed homicide) and less serious (minor assault, assault) forms of violence.     

Effectiveness of the habitual offender act: An assessment of criminal histories

Habitual offender acts have been adopted by 43 states and are under consideration in the legislatures of others. These acts have been adopted with relatively little evaluation of the costs involved in the implementation of this legislation. This study seeks to evaluate the extent to which Alabama’s habitual offender statute captures serious career criminals. The results indicate that the differences between those in the prison population sentenced under habitual offender statutes and those sentenced under other statutes is not significant. There does appear to be support for the contention that the majority of prisoners have substantial criminal histories; however, it is noted that many have not committed a severe crime. The exaggerated claims for the number of crimes committed by “typical” offenders and resultant high costs of non-incarceration are examined and challenged. The authors suggest that the resources available to deal with offenders could be better invested in the development and testing of community-based programs designed to divert offenders from a life of crime rather than in programs which intervene after criminal histories are severe and which invoke life-long incarceration as a remedy. The authors wish to express their appreciation to the Alabama Department of Corrections for their assistance in this project.     

Self-serving aspects of social cognition among adult offenders

Abstract

The different cognitive beliefs about offending exhibited by offenders are discussed. The question addressed in this paper concerns the extent to which beliefs and social knowledge about offending differentiate between different characteristic types of offending (drug abuse, theft, sexual and violent). Two hundred and ninety adult male prisoners in four Taiwanese prisons provided self-reported criminal histories. From these a crime index indicative of the proportion of offences of each type (or specialism in offending) was calculated for each offender. Offenders legitimize their own offending while they tend to regard the offences of others negatively. In this way, cognitive representations may reinforce an offender's specific pattern of criminal acts while also insulating them from pressures towards other criminal activities. Evidence is presented that offenders' social knowledge development is consolidated around crime themes.     

Crime Scene Behaviors and Characteristics of Offenders with Mental Illness: A Latent Class Analysis

The current study aimed to identify distinct types of crime scene behaviors based on the criminal planning and motivation of offenders with mental illness in South Korea. Furthermore, our study examined the relationships between the identified types of crime scene behaviors in terms of the offenders’ sociodemographic characteristics, modus operandi, and types of mental illness. Utilizing latent class analysis, the associations between crime scene behavior types and offender characteristics such as demographic factors, crime scene actions, and criminal information were empirically investigated. In particular, based on a sample obtained from a national police database of offenses committed between 2006 and 2014, four offense groups were identified: (i) instrumental–planned, (ii) instrumental–unplanned, (iii) expressive–unplanned, and (iv) hybrid. Additionally, significant relationships were found between offense styles and offender characteristics as well as criminal backgrounds. The findings suggest that mental disorders influence the types of actions exhibited by offenders during the commission of their crime. The results are discussed in terms of their theoretical and practical utility to criminal investigation.     

Assessing the interaction between offender and victim criminal lifestyles & homicide type

Purpose

This study examined the interaction between homicide victim and offender criminal lifestyles and the situational characteristics of homicides that occurred in the city of Newark, New Jersey from 1997 through 2007. Three research questions were explored: (1) what are the lifestyles exhibited by homicide victims and offenders; (2) are there different types of homicide actors (i.e., victim and/or offender) based on their criminal lifestyle; (3) do varying homicide actor (i.e., victim and/or offender) types influence the characteristics of homicide incidents?

Methods

Five hundred and thirteen homicide incidents was used to answer the three research questions. Hierarchical Agglomerative Cluster and Logistic Regression Analyses were employed to answer the research questions.

Findings

The findings showed that criminal lifestyles were indeed very common among homicide victims and offenders, and that they resemble each other. The findings also showed that there were two types of homicide victims and offenders, and that these types influenced the etiology of homicide incidents.

Conclusion

Overall, the results suggest that researchers and practitioners should take into account the criminal lifestyles of potential victims and offenders when tailoring homicide prevention strategies.     

A community forensic intellectual disability service: Twelve year follow up of referrals,analysis of referral patterns and assessment of harm reduction

Background. Previous reports on the outcome of services for offenders with developmental disabilities have found recidivism rates of between 40% and 70% with an elevated prevalence of sex offending, fire‐raising, and aggression. Studies have also reported that female offending rates in the intellectual disability population are broadly similar to those found in mainstream populations. All reports have been conducted on in‐patient or prison samples. The present report is of a community forensic intellectual disability service. Method. Two male cohorts of sex offenders (N = 121) and other types of offenders (N = 105) and female offenders (N = 21) are studied and compared. Data is reported on characteristics of the cohort, problems identified at referral, criminal justice disposal trends, index offences at time of referral, reoffending rates of up to 12 years after index offence, patterns of referral in the first 6 and second 6 years of the study period and the extent of harm reduction. Results. There were no differences between the groups on IQ and the sex offender cohort tended to be older. Female offenders had higher rates of mental illness although rates for the male cohorts were generally high at around 32%. The sex offending cohort had fewer problems with anger and aggression and alcohol abuse but a higher level of daily living problems and relationship problems. Female offenders had high rates of all problems studied except daily living problems. Unlike certain previous studies, sex offences predominated in the sex offender cohort while other types of offences predominated in the other two cohorts. Average age was lower for more recent referrals. Among recidivists only, a considerable amount of harm reduction was recorded. Conclusions. Fire raising and offences against children are not overly represented when compared with mainstream offenders. When compared with previous studies, it appears that a community forensic intellectual disability service may have an impact in reducing the number of offences committed over a 12 year follow up period.     

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.     

Perpetrator related analysis of intentional homicides in the Genf canton (1971-1990)

A retrospective offender-related analysis was conducted on all deliberate homicides committed in the canton of Geneva between 1971 and 1990. The cases analyzed included 97 convicted single perpetrators or accomplices and 93 victims. 21 further homicides remained unsolved. 86.6% of the offenders were male; foreigners were over-represented in comparison with Swiss citizens. The average age was 35 years. In a majority of the cases the offender and the victim were partners, came from the same family or were acquainted with each other. Guns or knives were the most frequently used weapons. The criminal offences tried in Geneva were evaluated also with regard to their legal qualification.