Perpetrators Of Intimate Partner Homicide Research Articles

One Size Doesn’t Fit All: An Exploratory Typological Approach to Understanding Criminal Career Heterogeneity in Intimate Partner Homicide

Approximately one in seven homicides globally is committed by a partner within an intimate relationship. While criminology research on intimate partner homicide (IPH) perpetrators is extensive, their interactions with law enforcement remain underexplored. This study examines the criminal trajectories of IPH perpetrators to ascertain whether they exhibit common or diverse patterns. Utilizing data from Quebec’s official criminal events database, the study analyzes variables concerning the criminal histories of 1,780 individuals involved in attempted or completed IPH through latent profile analysis. Findings indicate five distinct profiles among IPH perpetrators: one-time, low-volume intimate partner violence (IPV), moderate-volume IPV, high-volume violence, and high-volume polymorphous perpetrators. The external validity of these profiles is assessed using additional criminal career, contextual, and situational variables. Implications for the justice system’s practices and challenges are also discussed.

Health care utilization, mental disorders and behavioural disorders among perpetrators of intimate partner homicide in 2000-2016: A registry-based case-control study from Sweden.

Little is known about intimate partner homicide (IPH) perpetrator´s healthcare contacts and mental health problems before the killing. The aim was to compare male and female IPH perpetrators with matched controls from the general population by analysing differences in healthcare utilization and mental and behavioural disorders. This study includes 48 males and 10 females who perpetrated IPH between 2000 and 2016 in the Västra Götaland Region of Sweden. Controls (n = 458) were randomly selected from the general population and matched for sex, birth year and residential area. Data were retrieved from the Swedish National Patient Register and the Western Swedish Healthcare Register. Mental and behavioural disorders were classified according to ICD-10 (F00-F99). The Mann-Whitney U test was used to test for differences in health care utilization and mental and behavioural disorders. Compared to their controls, male perpetrators had more registered contacts with primary care ≤ 30 (p = < .001) and ≤ 365 days (p = .019), respectively, before the homicide; with specialist outpatient care ≤ 30 (p = < .001) and ≤ 365 days (p = < .001), respectively, before the homicide: and with inpatient care ≤ 30 (p = < .001) and ≤ 365 days (p = .024), respectively, before the homicide. Female perpetrators had more specialized outpatient care (p = .040) and inpatient care (p = .003) contacts ≤ 365 days before the homicide, compared to controls. Male perpetrators had at least one mental or behavioral disorder diagnosed in any studied healthcare setting except in inpatient care ≤ 30 days before homicide. Female perpetrators had more mental health disorders diagnosed in specialized outpatient care ≤ 365 days before the homicide (p < .001). Perpetrators had more healthcare contacts and mental disorders one year and one month prior to the homicide compared to their controls. Health care professionals should obtain necessary skills in routinely enquiring about intimate partner violence perpetration.

Patterns of mental health service use among perpetrators of domestic homicide: descriptive study of Domestic Homicide Reviews in England and Wales

Aims and method We used data from Domestic Homicide Reviews (DHRs) to describe the patterns of mental health service use by perpetrators of domestic homicide in England and Wales. In 186 DHR reports we compared the characteristics of perpetrators who accessed mental health services with those of perpetrators who did not. Separate analyses were conducted for perpetrators of intimate partner homicide (IPH) and family homicide. Results Over two-thirds (64.5%, n = 120) of the perpetrators had accessed mental healthcare before the homicide. Perpetrators of IPH who had used mental health services compared with those who had not were more likely to have a history of substance misuse, contact with the criminal justice system and a history of self-harm or suicide attempts. Clinical implications Our findings support the need for health services, particularly mental health, addictions and primary care, to take an assertive role in the prevention of domestic violence and abuse by identifying patients who are potential perpetrators of domestic violence and abuse.

Intimate Partner Homicide: Comparison Between Homicide and Homicide-Suicide in Portugal.

Intimate partner homicide (IPH) is a tragic event. Studies involving the comparison between IPH and intimate partner homicide-suicide (IPH-S) are scarce, with few studies in Portugal about this issue. The current study aims to compare IPH and IPH-S perpetrators, the victim-perpetrator relationships dynamics, and homicide circumstances. The data was collected through the analysis of 78 judicial processes of IPH that occurred in Portugal, between 2010 and 2015. Of the cases, 51 were IPH, 20 were IPH-S cases, and seven were attempted suicide cases, being perpetrated in 84.6% (n = 66) for male perpetrators. Suicide after intimate homicide were all committed by men. All judicial processes analyzed refer to heterosexual relationships. Bivariate and multivariate analyses were performed to compare the groups concerning perpetrator and victim sociodemographic characteristics, victim-perpetrator dyadic dynamics, and crime circumstances. The results show mostly common trends between the two groups with some differentiating factors when compared individually (e.g., perpetrator professional status, criminal records). Regression logistic analysis showed no differences between IPH and IPH-S.

Perceptions of female-perpetrated intimate partner homicide – Construction and initial validation of a novel scale

Key digested messageWomen who commit intimate partner homicide (IPH) are often described in stereotypical ways, such as unfeminine and therefore beyond explanation. Previous research suggests that stereotypical viewpoints have an impact in trial situations. To investigate the extent to which stereotypical beliefs play a part in sentencing, a scale was developed, to measure attitudes towards female perpetrators of IPH. The current project tests the developed scale, which measures attitudes towards female perpetrators of intimate partner homicide in the United Kingdom. Following an extensive review of the literature, a total of 107 items were generated overall, reflecting the stereotypical categories. An expert pool analysed how well each item reflected the category to which it was assigned. This research identified four factors associated with stereotyping of female intimate partner homicide perpetrators, suggesting that specific concepts exist in relation to attitudes towards female homicide perpetrators. The scale could assist in jury verdicts.

Examining the Factors that Impact Suicide Following Heterosexual Intimate Partner Homicide: Social Context, Gender Dynamics, and Firearms.

Despite a wealth of research on intimate partner homicide, research on intimate partner homicide followed by suicide of the perpetrator is sparse. Existing studies on intimate partner homicide-suicide: tend to be descriptive, not keeping pace with quantitative advances in the epidemiological and social sciences; have yet to examine how context impacts intimate partner homicide-suicide; and are typically limited to male perpetrators, given small localized samples of female-perpetrated intimate partner (homicide and) homicide-suicide. This study uses data on 7584 heterosexual intimate partner homicide and homicide-suicide cases distributed across 2465 places and 42 U.S. states from the National Violent Death Reporting System (2003-2018) to examine the victim and perpetrator characteristics, relationship dynamics, situational factors, and contextual features that influence the likelihood of committing suicide following intimate partner homicide. Hierarchical logistic regression models indicate that victim characteristics that increase the vulnerability to victimization (alcohol and drug use, mental health problems, less than some college education) decrease the odds of committing suicide following intimate partner homicide. Similarly, situational (victim weapon usage, additional perpetrators) and contextual (concentrated disadvantage, residential instability) risk factors decrease the odds of committing suicide following intimate partner homicide. Conversely, impairment of the perpetrator (alcohol use, mental health problems) and a more intimate victim-perpetrator relationship (spousal relationship, caregiver) increases the odds of homicide-suicide. Additionally, results indicate that firearms play an integral part in homicide-suicide as well as in decreasing the gender gap in homicide-suicide. The findings suggest that the internalization of guilt by perpetrators of intimate partner homicide may play a key role in subsequent suicide. Practically, limiting firearm exposure will not only reduce the lethality of intimate partner violence, but will decrease the odds of perpetrator suicide following intimate partner homicide. This is particularly true for female-perpetrated homicide-suicide, which is unlikely to occur without a firearm.

Socio-demographic and psychosocial characteristics of male and female perpetrators in intimate partner homicide: A case-control study from Region Västra Götaland, Sweden.

Risk factor studies on male-perpetrated intimate partner homicide (IPH) are often compared with studies on intimate partner violence (IPV) or non-partner homicide perpetrators. This not only excludes female perpetrators, but also fails to take socio-demographic and psychosocial differences between perpetrators and the general population into consideration. The aim of this study was to examine male- and female-perpetrated IPH cases, and to compare socio-demographic factors in IPH perpetrators and in matched controls from the general population. Data were retrieved from preliminary inquiries, court records and national registers for 48 men and 10 women, who were perpetrators of IPH committed in 2000–2016 and residing in Region Västra Götaland, Sweden. The control group consisted of 480 men and 100 women matched for age, sex and residence parish. Logistic regression, yielding odds ratios (OR) with 95% confidence intervals (CI), was performed for male perpetrators and male controls to investigate associations for selected socio-demographic and psychosocial characteristics. This was not performed for females due to the small sample size. Female perpetrators were convicted of murder to a lesser extent than male perpetrators. No woman was sentenced to life imprisonment while five men were. Jealousy and separation were the most common motivational factors for male perpetration while the predominant factor for female perpetrators was subjection to IPV. Statistically significant differences were found between male perpetrators and male controls in unemployment rate (n = 47.9%/20.6%; OR 4.4; 95% CI 2.2–8.6), receiving benefits (n = 20.8%/4.8%; OR 5.2; 95% CI 2.3–11.7) and annual disposable income (n = 43.8%/23.3% low income; OR 5.2; 95% CI 1.9–14.2) one year prior to the crime. Female IPH perpetrators were less educated than female controls (≤ 9-year education 30%/12%) and were more often unemployed (70%/23%) one year before the crime. Male and female IPH perpetrators were socio-economically disadvantaged, compared with controls from the general population.

Characteristics of persons accused of intimate partner homicide amongst forensic psychiatric observations.

BackgroundIntimate partner homicide (IPH) is a global public health problem. One study conducted over 66 countries found that 13.5% of all homicides and 38.6% of female homicides were committed by an intimate partner. In South Africa, there were no published studies that examine alleged perpetrators of IPH that were referred for forensic psychiatric observation.AimTo describe the profile of accused persons referred for forensic psychiatric observation for a charge of murder or attempted murder of their intimate partners. Certain characteristics were further examined according to the psychiatric observation outcomes.SettingThe study was conducted at Sterkfontein Hospital, a forensic psychiatric hospital in Gauteng, South Africa.MethodsA retrospective record review of accused persons referred for forensic psychiatric observation for a charge of murder or attempted murder of their intimate partners was conducted. The period of the review was 19 years. The definition of intimate partners included current or former spouses and partners, same-sex partners and rejected suitors.ResultsOne hundred and sixty-three files, which included forensic psychiatric reports, were reviewed. The findings related to the profile of accused persons and offence characteristics indicated that: (1) history of violent behaviour is prevalent; (2) homicides mostly occur in private homes; (3) knives and firearms are most often used; (4) infidelity, separation and jealousy are common motives; (5) psychotic disorders, personality disorders and substance use disorders feature prominently. A total of 88% of the sample were found fit to stand trial and 82% were found criminally responsible. Factors significantly associated with being found fit to stand trial and criminally responsible following the forensic psychiatric observation were: male gender, having received a tertiary education, employment prior to the offence, earning a salary of more than R10 000, having no previous psychiatric or medical illness, a positive forensic history, previous intimate partner violence (IPV) perpetration, indicating a motive for the homicide, having no psychiatric illness at the time of the offence which would impact fitness to stand trial and criminal responsibility.Factors significantly associated with being found not fit to stand trial and not criminally responsible following the forensic psychiatric observation were: female gender, having received a primary education, unemployment prior to the offence, having a previous psychiatric or medical illness, no forensic history, no previous IPV perpetration, not indicating a motive for the homicide, having a psychiatric illness at the time of the offence which would impact fitness to stand trial and criminal responsibility.ConclusionThe characteristics highlighted in this study can contribute to the development of risk assessment tools which can be used to identify likely perpetrators of IPH. Other interventions, for example controlling access to knives and firearms, reducing substance abuse and improving mental health services, are also important in the prevention of IPH.

Examining Depression Among Perpetrators of Intimate Partner Homicide.

Male depression has been recognized as an important factor in some cases of intimate partner violence but there is a paucity of literature connecting depression and intimate partner homicide (IPH). This retrospective study provides a preliminary analysis that distinguished depressed from nondepressed perpetrators of IPH from a sample of 135 cases analyzed by a coroner's homicide death review committee in Ontario, Canada. Depressed perpetrators were more likely to commit homicide-suicide and had almost 1.5 times the number of risk factors present than nondepressed perpetrators. Consistent with the existing literature, the results indicated that depressed perpetrators were significantly older, more likely to commit homicide-suicide than homicide only, more likely to have prior threats or attempts of suicide, more likely to have been abused or witnessed domestic violence as a child than nondepressed perpetrators and more likely to exhibit sexual jealousy. The implications for these findings are outlined in terms of training of mental health professionals and public awareness about the potential lethality of domestic violence.

A Comparison of Intimate Partner Homicide With Intimate Partner Homicide-Suicide: Evidence From a Norwegian National 22-Year Cohort.

Homicide-suicide incidents make up a relatively small proportion of homicides overall, but occur more frequently in certain subtypes of homicide, such as men who kill their female partners. This study investigates aspects of intimate partner homicide-suicide (IPHS) by comparing it with intimate partner homicide (IPH). All IPHs in Norway from 1990 to 2012 (N = 177) were included. Quantitative data were extracted from court documents. Qualitative data were collected by interviews with bereaved. Multivariate logistic regression analyses and systematic text condensation were conducted. Nearly one fourth of IPHs were identified as IPHS. Perpetrators of IPHS were less likely to have a previous criminal record, even having a history of disregard and violations of the law. Perpetrators of IPHS were mainly native-born citizens and were more educated than IPH perpetrators. The motive of IPHS was more often jealousy than a dispute, but the motive was most often recorded as "other" or "unknown." IPHS was perceived as intentional, and the bereaved did not unambiguously support the interpretation that the IPHS had been triggered by stressful situations. The bereaved pointed to the loss of hope or loss of a future combined with an inability to cope with severe disappointments as an important risk factor. Within the framework of an interactional perspective, our findings indicate that IPHS shares more characteristics with IPH than it does with other categories of homicide and other violent deaths in general.

Trading Places: Microlevel Predictors of Women Who Commit Intimate Partner Homicide

Intimate partner homicide (IPH) research has established the importance of the offender’s gender regarding motivations, situations, and structures present in the offense. However, little is known about female IPH perpetrators’ microlevel characteristics, despite research indicating female IPH offense numbers are closer to males’ than in other homicide types. To fill this gap, the current exploratory study assesses the likelihood of female-perpetrated IPH by the couples demographics, weapon type, relationship status, and regional location of the homicide. Using data from the Supplementary Homicide Reports (SHR), results show microlevel gender-specific differences. Female, compared to male, IPH perpetrators more often kill in intraracial, compared to interracial relationships, and are more likely to kill in dating rather than marital relationships.

Predictors of Intimate Partner Homicide in a Sample of Portuguese Male Domestic Offenders.

Intimate partner homicide (IPH) is a major social problem, and it is important to determine the predictors of this violent behavior. The purpose of this study was to examine the differences between intimate partner violence (IPV) and IPH and to identify the variables that predict IPH. The sample was composed of 35 perpetrators of IPH, who were compared with 137 perpetrators of IPV. The data were collected using the Spousal Abuse Risk Assessment. The data suggest that IPH presents different dynamics from IPV. Being older, exhibiting suicidal and/or homicidal ideation/intent, and the use of weapons and/or credible threats of death substantially increase a man's risk of committing IPH. Inversely, not being single, violating conditional release, and being victimized in childhood decrease the likelihood of committing IPH. These findings reinforce the assumption that IPV and IPH have both commonalities and differences and challenge the view that IPV and IPH are different phenomena and that intimate partner murder is an inexplicable event. Implications for preventing IPV and IPH are discussed.

Service Contacts Proximate to Intimate Partner Homicides in Victoria

This study examined the frequency, nature and proximity of service contacts among victims and perpetrators of intimate partner homicide in Victoria, Australia. A retrospective review was conducted of coroner’s records of 120 intimate partner homicides for the period 2000–2008. In 91 (75.8 %) of the cases, one or both parties had contact with a service in the 12 months preceding the homicide. The justice system was the most frequent point of contact among both parties, and the healthcare system was often the first and preferred point of contact for victims and perpetrators when seeking assistance individually. Overall, perpetrators were more likely to have contact with a service than victims, and the majority of all service contacts occurred within 1 month of the homicide. This paper outlines the prevention opportunities that exist within the service system and highlights the importance of interventions and treatments directed at perpetrators of family violence.

Assaults on Inmates and Staff by Perpetrators of Intimate Partner Homicide: An Examination of Competing Hypotheses.

The current study presents the results of an analysis of serious and assaultive prison rule violating behavior among male perpetrators of intimate partner homicide (IPH). Data on prison rule violations were collected from a sample of 189 inmates convicted of IPH in a large, southern prison system. The study focused on the degree of continuity in violent behavior among IPH offenders from the community to the prison setting. The current study tested hypotheses derived from both the feminist perspective (FP) and the general violence perspective (GVP). As a group, IPH offenders were better behaved in prison than other incarcerated homicide offenders, thereby offering some support for the FP. However, the lower level of assaultive behavior among the group was not universal. Characteristics associated with continued violent offending in the prison environment were the same as those found in previous studies of incarcerated homicide offenders, thereby lending greater support to the GVP.

Mental Illness and Domestic Homicide: A Population-Based Descriptive Study

Approximately 10% of convicted homicide perpetrators in England and Wales have symptoms of mental illness at the time of homicide. The prevalence among perpetrators of adult domestic homicide is unclear. The study was a consecutive case series of all convicted adult domestic homicide perpetrators in England and Wales between 1997 and 2008. Sociodemographic, clinical, and offense characteristics were gathered from the United Kingdom Home Office, the Police National Computer, psychiatric court reports, and, for psychiatric patients, questionnaires completed by supervising clinicians. A total of 1,180 perpetrators were convicted of intimate partner homicide, and 251 were convicted of homicide of an adult family member. Fourteen percent of perpetrators of intimate partner homicide and 23% of perpetrators of adult family homicide had been in contact with mental health services in the year before the offense; 20% of intimate partner homicide perpetrators and 34% of adult family homicide perpetrators had symptoms of mental illness at the time of offense. Perpetrators with symptoms of mental illness at the time of offense were less likely than perpetrators without symptoms to have previous violence convictions or history of alcohol abuse. A significant minority of adult domestic homicide perpetrators had symptoms of mental illness at the time of the homicide. Most perpetrators, including those with mental illnesses, were not in contact with mental health services in the year before the offense. Risk reduction could be achieved through initiatives that encourage individuals with mental health problems to access mental health services and that develop closer interagency working, including between mental health services, police, social services, and domestic violence services.