Mortality among habitually violent offenders.

There are no published studies about mortality among habitually violent offenders, although it would be essential to take into account the possibly higher mortality rate of this population, when the incidence of committing violent offenders is calculated as a function of age. We studied mortality during the age range 30-50 years among 102 habitually violent male offenders, who were considered to be dangerous to the lives of other people, during the 24.5-year period 1971-1995 (in the range 3.5 months-24.5 years, the average prison time was 6 years, 7 months and 11 days). In Finland, the death rate in the group of men aged 30-50 years is 3.7/1000/year, but among these habitually violent male criminals, the mortality rate was observed to be 18.1/1000/year. Therefore, the relative risk for dying in this age group was 4.9-fold when compared with the normal male population aged 30-50 years. A finding of this magnitude has a substantial effect, when the real incidence of committing homicides or other violent offenses is calculated as a function of age. This is an important issue in forensic psychiatry, since it is generally believed that the incidence of committing violent crimes is decreased between the ages of 30 and 50 years, and age is used as one predictive factor when the risk of forthcoming violent behavior is assessed.     

Mortality among habitually violent offenders

There are no published studies about mortality among habitually violent offenders, although it would be essential to take into account the possibly higher mortality rate of this population, when the incidence of committing violent offenders is calculated as a function of age. We studied mortality during the age range 30–50 years among 102 habitually violent male offenders, who were considered to be dangerous to the lives of other people, during the 24.5-year period 1971–1995 (in the range 3.5 months–24.5 years, the average prison time was 6 years, 7 months and 11 days). In Finland, the deathrate in the group of men aged 30–50 years is 3.7/1000/year, but among these habitually violent male criminals, the mortality rate was observed to be 18.1/1000/year. Therefore, the relative risk for dying in this age group was 4.9-fold when compared with the normal male population aged 30–50 years. A finding of this magnitude has a substantial effect, when the real incidence of committing homicides or other violent offenses is calculated as a function of age. This is an important issue in forensic psychiatry, since it is generally believed that the incidence of committing violent crimes is decreased between the ages of 30 and 50 years, and age is used as one predictive factor when the risk of forthcoming violent behavior is assessed.     

Risk of homicidal behaviour among persons convicted of homicide

We studied the risk of homicidal behaviour among persons convicted of homicide using an epidemiological method. The results showed that male homicide offenders are at least 10 times more likely to commit a homicide when compared with general male population. This odds ratio was about 150-fold among offenders who had committed at least four previous aggravated violent crimes as well as homicide.     

Psychopathy (PCL-R) in a forensic psychiatric sample of homicide offenders: some reliability issues

Several studies have shown that psychopathy is overrepresented among homicide offenders. There is a consensus that Hare's Psychopathy Checklist-Revised PCL-R is currently the most valid and useful tool for rating psychopathy (e.g., [Fulero, S. M. (1995). Review of the Hare Psychopathy Checklist-Revised. In J. C. Conoley & J. C. Impara (Eds.), Twelfth Mental Measurements Yearbook (pp. 453-454). Lincoln, NE: Buros Institute]). Usually, when making a rating of psychopathy, both an interview and an examination of the subject's files are used. However, it has been discussed what is really required to be able to rate psychopathy in a reliable manner. The aim of the present study was to retrospectively rate the degree of psychopathy in 35 homicide offenders being subjected to forensic psychiatric assessment. These ratings of psychopathy were carried out using forensic psychiatric files and courts'; verdicts only. Another aim was to examine the reliability of PCL-R in this specific Swedish sample of homicide offenders. There was a good agreement between the two raters with respect to the categorical diagnosis of psychopathy (Cohen's kappa=.81, p<.001), which indicates that retrospective ratings of psychopathy are well suited for research purposes. The prevalence of psychopathy among the homicide offenders was 31.4% (using a cut-off score of 30), which means that the construct of psychopathy may contribute to the understanding of the phenomenon of homicide. In the planning of treatment for homicide offenders, a consideration of possible psychopathy is necessary. As criminal psychopaths are known to relapse into violent criminality, it is very important that they are given efficient treatment, placement and management.     

When is violence planned?

We examine what types of violent offenses tend to be planned using self-report data from a nationally representative sample of state and federal inmates. We find mixed support for the idea that predatory offenses are more likely to be planned than dispute-related offenses. As expected, robbery offenders are much more likely to report that they planned their crime ahead of time than homicide and physical assault offenders. However, sexual assault offenders are no more likely to report planning than homicide offenders. We also find mixed support for the idea that domestic violence-the supposed crime of passion-is less likely to be planned than violent offenses involving strangers. Finally, we find substantial demographic variation depending on type of crime. Robberies involving offenders of lower socioeconomic status and homicides and assaults involving African American offenders and victims are less likely to involve planning.     

Fatal Firearm Injuries in Tennessee: A Comparison Study of Tennessee's Two Most Populous Counties 2009–2012

Firearm injuries are a leading cause of violent death in Tennessee. This study was designed to compare the demographic and epidemiologic features of fatal firearm injuries in Shelby County and Davidson County, Tennessee between 2009 and 2012. We identified 1081 gunshot fatalities for the study period in these two counties. Shelby County had a higher overall, age‐adjusted gunshot mortality rate, a higher male age‐adjusted gunshot mortality rate, and a higher age‐adjusted gunshot homicide rate than Davidson. Age groups 25–34 years and 35–44 years had higher crude mortality rates for gunshot deaths in Shelby County than Davidson County. Both counties had higher age‐adjusted gunshot mortality rates for black males than white males, higher homicide rate for black race than white, and higher suicide rate for white race than black. Homicide was the most common manner of death, and handguns were the most common type of firearm used in both counties.     

Homicide,Psychopathy, and Aging—A Nationwide Register‐based Case‐comparison Study of Homicide Offenders Aged 60 Years or Older*

Abstract: With populations aging there have been some concerns on elderly offending. We compared elderly homicide offenders with a younger comparison group with special emphasis on psychopathy. We analyzed nationwide register‐based material on all homicide offenders aged 60 or older who were in a forensic psychiatric examination in Finland 1995–2004 and their gender‐matched comparison group of younger homicide offenders. The offenders 60 years or older were diagnosed less often than the younger ones with drug dependence and personality disorders and more often with dementia and physical illnesses. The mean Psychopathy Checklist—Revised total scores as well as factor and facet scores were lower in the 60 or older age group. The group 60 years or older had significantly lower scores on eight individual items of social deviance. The interpersonal/affective factor 1 scores did not differ. Understanding the possible underlying phenomena of violent behavior may provide help for developing services for the elderly.     

Psychopathic traits in Finnish homicide offenders with schizophrenia

There is a paucity of studies examining psychopathy in comparable samples of violent individuals with and without psychotic illness. The main goal of the study was to assess the prevalence and nature of psychopathic traits as measured by PCL-R among Finnish homicide offenders with schizophrenia. Further, the impact of co-morbid psychopathy on the homicidal incidents, as well as the associations of psychopathy and offender background factors, among offenders with schizophrenia was investigated.A retrospective study was performed using extensive forensic psychiatric evaluation reports and crime reports as sources of information. The sample consisted of 72 homicide offenders with schizophrenia and 72 controls without psychotic illness.Psychopathic features were prevalent among Finnish homicide offenders with schizophrenia, although for the most parts to a lesser extent compared to other homicide offenders. Like non-mentally ill psychopathic offenders, offenders with schizophrenia and many psychopathic traits are likely to present early starting problems in many areas of life and they also commit homicides that resemble other psychopathic offenders' in their choice of victims, intoxication and post-offense behavior.The observed prevalence of psychopathic traits highlights the importance of psychopathy assessment among violence-prone individuals with schizophrenia. In most respects, offenders with schizophrenia and high levels of psychopathic traits seem to be similar to psychopathic offenders without psychotic illness, which has implications for early intervention and management.     

Criminal recidivism in sexual homicide perpetrators

Forensic psychiatric reports on 166 sexual homicide perpetrators in Germany were retrospectively analyzed for criminal risk factors. Follow-up information about release and reconvictions from federal criminal records was available for 139 offenders; 90 (64.7%) had been released. The estimated recidivism rate (Kaplan-Meier analyses) for 20 years at risk was 23.1% for sexual and 18.3% for nonsexual violent reoffences. Three men (3.3%) were reconvicted for attempted or completed homicide. Only young age at the time of sexual homicide resulted in higher sexual recidivism, whereas increased nonsexual violent recidivism was related to previous sexual and nonsexual delinquency, psychopathic symptoms, and higher scores in risk assessment instruments. Increased recidivism with any violent reoffence was associated with age-related factors: young age at first sexual offence, at homicide, and at release and duration of detention. The impacts of the results for risk assessment, relapse prevention, and supervision are discussed.     

A 28-year (1963-90) study of homicide in Marion County, Oregon.

We describe 240 consecutive homicidal deaths that occurred in Marion County, Oregon, over a 28-year period (1963-90). An epidemiological assessment of the homicides yielded the following information: More than 91% of these deaths were primary homicides. In primary homicide, 63% of the victims and 88% of the offenders were male. In secondary homicide, 76% of the victims and all of the offenders were male. A high percentage of victims (83%) and offenders (84%) in primary homicide were Caucasian, as were 100% of victims and offenders in secondary homicide. About 12% of victims and 10% of offenders in primary homicide were Hispanic. Fifty-nine percent of primary homicides were intrasexual, as compared to 87% of secondary homicides. An intraracial pattern was found in 90% of primary homicides and in 100% of secondary homicides. The most frequent means of death in both primary and secondary homicides were firearms, physical beating, and stabbing. Strangers committed 80% of secondary homicides. This was in marked contrast to the victim-offender relationship found in primary homicides, where strangers were responsible for approximately 16% of the total, acquaintances for approximately 36%, and family members for approximately 48%. The overall clearance rate (i.e., the identification and charging of a suspect for the death) was 88%.     

Fighting back: Lethal responses to predatory attacks

Each year millions of Americans become victims of predatory crimes. The way victims respond to these attacks varies from complicance with offenders' requests to physically challenging offenders. In some cases, the physical defense of self and property has lethal consequences for the initial offender. While much is known about felony murder victims and typical homicide offenders, little is known about individuals who fight back against predatory attack by using lethal violence. In this paper, we use data from the Homicides in Chicago, 1965–1995 study to describe the characteristics of defensive homicide offenders and to determine how they compare with felony murder victims and defensive homicide offenders. Our results indicate that defensive homicide offenders are more similar to typical homicide offenders than felony murder victims, and are even more likely to have violent criminal histories and to use firearms than typical homicide offenders. Our results challenge the common perception that individuals who fight back against predatory attack are simply “law-abiding citizens.” We conclude the paper with a discussion of the implications of our study for additional research and police practice. Authors' Note: The authors thank editor Dennis Stevens and James Black for their helpful comments on earlier draft of the paper.     

Self-Reported Violent Offending Among Subjects with Genius-Level IQ Scores

While research indicates offenders have IQ scores approximately eight points below the population average of 100, very little is known about the crimes of individuals with above-average IQ scores. The current research is not limited to acts of family violence, but it describes the self-reported offending of 465 high-IQ subjects for eight violent crimes: robbery, carrying a concealed weapon, making a serious threat, serious assault, homicide, constructing an explosive device, kidnapping, and attempting suicide. Rates of prevalence and incidence are reported and compared to the rates from a control group of 756 individuals with average IQ scores. High-IQ subjects reported higher rates of prevalence, incidence, and arrest, but lower levels of conviction, than controls. A significant positive correlation exists for offenders between IQ score and lifetime incidence rate for robbery, homicide, and kidnapping, and a significant negative correlation exists between IQ score and incidence of attempted suicide.     

Domestic Homicide: Neuropsychological Profiles of Murderers Who Kill Family Members and Intimate Partners

Domestic homicide is the most extreme form of domestic violence and one of the most common types of homicide. The objective was to examine differences between spontaneous domestic homicide and nondomestic homicide offenders regarding demographics, psychiatric history, crime characteristics, and neuropsychological status, utilizing neuropsychological test data from forensic examinations of 153 murderers. Using standard crime classification criteria, 33% committed spontaneous domestic homicides (SDH) and 61% committed nondomestic homicides (NDH). SDH offenders were more likely to manifest psychotic disorders, but less likely to be diagnosed with antisocial personality disorder or to have prior felony convictions. SDH offenders manifested significantly worse neuropsychological impairments than NDH offenders. The mean number of victims was lower for the SDH than the NDH group and only 14% of SDH offenders used a firearm, whereas 59% of NDH offenders used a firearm. These findings corroborate the notion that spontaneous domestic homicide may represent a discernible criminological phenotype.     

Policy and disparity: The punishment of infanticide in Britain and America

In the United States, studies of maternal infanticide (and female violent behavior in general) have been rare. Children represent about 35% of female perpetrated homicide victims and there is reason to believe that this number may be significantly higher based on estimates concerning SIDS deaths. Infants face a homicide rate approximately four times higher than that of the general population in much of the industrialized world. Infanticide has historically been relegated to the legal category of homicide in the U.S. This is significantly different than in most industrialized countries. This article argues that the lack of specific public, legal, and medical policy in the United States concerning infanticide results in random inequity of charges, dispositions, sanctions, and treatment of offenders. This situation is unnecessary as demonstrated by British and European legal systems, and is in direct opposition to the policy of minimizing disparity.     

The violent female perpetrator and her victim

The aim of the present study was to examine the relationship between violent female offenders and their victims as well as the putative differences in the motives and specific psychological factors among three groups of female offenders: women who have victimised someone closely related to them, those who have victimised an acquaintance and lastly women who have victimised a stranger. More than half (N=61) of all violent female offenders hospitalised or incarcerated in Finland during the year of study were interviewed and assessed by Structured Clinical Interview II for DSM-IV (SCID-II) and Hare's Psychopathy Checklist-Revised (PCL-R). In 34% of the cases the victims were persons close to the offender, in 41% the victims were acquaintances and in 25% strangers. The victims in homicide offences were more often both male and closer to the perpetrator than in assault offences. Although motives were related to interpersonal problems, self-defence and long-term physical or psychological abuse were reported by only a few women, even for the small proportion of women whose victims were intimate partners. The most frequent reason for offences stemmed from confrontational situations in connection with alcohol use. Women who victimised acquaintances and strangers were also more likely to have a history of criminality and substance abuse than women who victimised those in close personal relationships. The latter were also more likely to have an antisocial personality disorder (PD) and psychopathic characteristics. There were, however, no significant differences found between those who had experienced physical or psychological abuse in childhood or adulthood and those who had no adverse experiences. These findings suggest that the violent behaviour by females leads more often to the death of the victim, when the victim is closely related to the perpetrator. The commonly-held view that violent female offending occurs primarily as a consequence of precipitation by the victim was not supported.     

Aggression homicide and rejection homicide: a communicative classification of homicide

Based on a 10-year sample of homicides (n = 50), the hypothesis was tested that it is possible to differentiate between aggression and rejection homicide. The aggression homicide results from the offender/victim relationship, which is no longer accepted for some reason. In contrast, in the rejection homicide the offender radically strives for a goal which can only be reached if the victim is eliminated. Based on forensic-psychiatric expert opinions (n = 50), the case analyses yielded 31 aggression homicides and 18 rejection homicides, one case could not be classified. Aggression homicides differed significantly from the rejection homicides with regard to their main motives. Hate in quarrel (n = 8), violent occupation of the victim (n = 7), delusions (n = 5), revenge (n = 3), self-defence (n = 2), and jealousy (n = 1) characterized the aggression homicides, whereas rejection homicides were dominated by economic motives (n = 14). Two offenders intended to get rid of the victim and one offender wanted to rescue a third person. From a forensic-psychiatric point of view, the pertinent statistical data (social data, diagnosis, criminal responsibility) are reported and the significance of the differentiation between aggression homicide and rejection homicide for medico-legal or criminological case profiling and for the prognosis of the risk potential is discussed.     

Somatic morbidity and criminality: the Northern Finland 1966 Birth Cohort Study

OBJECTIVE: The aim of this study was to investigate the association between adverse physical disorders and violent/non-violent criminal behaviour. DESIGN: The study material consisted of the large, prospectively followed, unselected and genetically homogeneous Northern Finland 1966 Birth Cohort, the Finnish Hospital Discharge Registers and the National Crime Register (n=10934). MAIN RESULTS: The results of the logistic regression analyses showed that male offenders had statistically significantly more injuries (adj. OR=1.81, 95% CI=1.51-2.17), when compared with males without a criminal history. Violent male offenders exhibited greater morbidity to the diseases of the respiratory system (adj. OR=1.64, 95% CI=1.03-2.60) when compared with non-violent criminals. Female offenders suffered more commonly from poisonings (adj. OR=3.84, 95% CI=1.69-8.72), injuries (adj. OR=2.79, 95% CI=1.67-4.66), infections (adj. OR=1.87, 95% CI=1.16-2.99) and indefinite symptoms (adj. OR=2.02, 95% CI=1.20-3.40) than non-offending females. CONCLUSIONS: At epidemiological level, criminal behaviour seems to be associated especially with an increased risk of injuries for both sexes. The observed increase of the diseases of the respiratory system among violent but not among non-violent males calls for further investigations.     

Differences in Neuropsychological Functioning Between Homicidal and Nonviolent Schizophrenia Samples

Few studies have compared performance on neurocognitive measures between violent and nonviolent schizophrenia samples. A better understanding of neurocognitive dysfunction in violent individuals with schizophrenia could increase the efficacy of violence reduction strategies and aid in risk assessment and adjudication processes. This study aimed to compare neuropsychological performance between 25 homicide offenders with schizophrenia and 25 nonviolent schizophrenia controls. The groups were matched for age, race, sex, and handedness. Independent t‐tests and Mann–Whitney U‐tests were used to compare the schizophrenia groups’ performance on measures of cognition, including composite scores assessing domain level functioning and individual neuropsychological tests. Results indicated the violent schizophrenia group performed worse on measures of memory and executive functioning, and the Intellectual Functioning composite score, when compared to the nonviolent schizophrenia sample. These findings replicate previous research documenting neuropsychological deficits specific to violent individuals with schizophrenia and support research implicating fronto‐limbic dysfunction among violent offenders with schizophrenia.     

Firearm Ownership in High-Conflict Families: Differences According to State Laws Restricting Firearms to Misdemeanor Crimes of Domestic Violence Offenders

This study examines the association between state laws that prohibit firearm ownership for offenders convicted of misdemeanor crimes of domestic violence (MCDV) and firearm ownership in two-parent families with high-conflict male partners with arrest histories. Mixed effects logistic regression models applied to data from the Early Childhood Longitudinal Study-Birth cohort (n?= 5350) determined that living in a state with laws that prohibited firearm ownership for convicted MCDV offenders decreased the likelihood of firearm ownership among families with high-conflict males by 62%. The length of the time limit on firearm prohibition was correlated with incremental decreases in firearm ownership in such families, with the probability of firearm ownership among families with high-conflict males decreasing from 30% in states with no MCDV laws restricting access from firearms to 12% in states with permanent prohibition on firearm ownership. These findings have significance for public health policy aimed at decreasing intimate-partner homicide.