A neurodevelopmental perspective on male violence

Research is increasingly documenting a neurobiological basis to violence. This review takes a neurodevelopmental perspective on the very small group of males who grow up to become persistent violent offenders. After outlining six criteria for what constitutes a neurodevelopmental disorder, the extent to which chronic violence meets these definitional criteria is examined, covering the fields of genetics, structural and functional brain imaging, and neuropsychology. Early health risk factors for violence are then outlined, including birth complications, minor physical anomalies, prenatal smoking and alcohol exposure, poor nutrition, lead exposure, and traumatic brain injury. Persistent adult violence is argued to originate in aberrant temperamental behavior in early childhood, to have a stable developmental trajectory, and to be associated with impaired education, social, and occupational functioning. Taken together, it is argued that chronic adult violence meets criterion for being conceptualized as having neurodevelopmental origins and that an important, but not sole, source of neural maldevelopment lies in prenatal and early postnatal risk factors. This review concludes with a recognition of the sociopolitical context within which a neurodevelopmental perspective on chronic violence sits, together with directions for future research, including whether a neurodevelopmental hypothesis is best applied to reactive as opposed to proactive aggression.     

A contribution towards an analytic theory of violence

Abstract This paper considers some of the clinical and theoretical problems contingent upon the imprecision and lack of clarity with which the word and concept 'violence' is used. A definition of violence is proposed, which separates the concept of violence from the related concept of aggression and sees the former as a particular form of the latter. This definition also proposes that violence must always have a psychological component aspect. It is contended that clarity is important clinically so that analysts can distinguish psychologically destructive from psychologically creative elements in their patients, in their own psychological functioning and in the countertransference. The phenomenon of violence is considered in the light of Fordham's model of development, in particular that violence may be viewed as a consequence of a failure to integrate normal, aggressive aspects of the personality. Violence is seen as uncontained, split-off aggression, subjected to psychological projection. It is proposed that a particular quality of the experience that is being projected is an uncontained sense of violation. The notion of 'mindless violence' is considered.     

Physical aggression toward teachers: Antecedents,behaviors, and consequences

School violence is a significant public health concern that occurs in many forms. Physical aggression can cause serious bodily injury and long-term negative effects, and both teachers and students experience significant rates of physical aggression. There are few studies examining teachers’ experiences of physical aggression. Studies that go beyond prevalence are limited, and we know little about the triggers and consequences that surround these incidents. This qualitative investigation used an antecedent-behavior-consequence (A-B-C) framework to understand how incidents of physical aggression directed toward teachers unfold. The sample included 193 elementary and secondary teachers who completed an anonymous, online survey and described events leading up to and following their experiences with physical aggression. Using conventional content analysis, we identified common antecedents, such as breaking up fights, discipline, and directives, and common consequences, such as student removal, school staff involvement, positive outcomes, and inaction. Further analyses revealed seven common A-B-C patterns among physical aggression incidents that are highlighted and discussed. Utility of the A-B-C framework for teacher-directed violence is described, along with implications for research, practice, and policy. Exploring the context surrounding incidents of physical aggression directed against teachers provides useful information for violence prevention and interventions.     

日常环境中的暴力暴露对攻击行为的长期影响:一个有调节的中介模型

以850名大学生为被试,探讨日常环境中的暴力暴露与攻击行为的关系,并在此基础上提出一个有调节的中介模型,考察攻击性信念的中介作用和人际信任的调节作用。结果发现:(1)日常环境中的暴力暴露对攻击行为有显著的正向预测作用;(2)攻击性信念在日常环境中的暴力暴露与攻击行为的关系中起部分中介作用;(3)攻击性信念的中介作用会受到人际信任的调节。对于低人际信任个体,攻击性信念起部分中介作用;对于高人际信任个体,攻击性信念的中介效应不显著,日常环境中的暴力暴露对攻击行为只有直接作用。     

Overcoming the “objective” language of violence

In addition to the technical difficulties involved in the study of human violence, theoretical attempts at understanding it run into two major obstacles. One is the psychological problem of gaining distance from the human emotions involved. The other is the ideological problem of viewing violence in its historical and social context. This article points to the limitations of some of the current approaches to human violence, and presents one approach which offers a more realistic and more comprehensive way of looking at human violence. The objectivization and quantification of behavior aims at gaining a phenomenological and an ideological distance from it. In the case of human aggression, analogies from animal behavior may serve a similar function. The article advocates dealing with violence in its phenomenological, social, and historical context, and presents the contribution of Frantz Fanon to the understanding of one particular historical situation as a relevant model. Fanon analyzed violence in the Algerian war for independence from a phenomenological-psychohistorical viewpoint, and his analysis may serve as a model of working within the human context. Efforts in this direction should lead to a more humanistic and a more comprehensive view of human violence.     

On the consideration of automatic as well as controlled psychological processes in aggression

Without slighting the important role played by controlled psychological processes in human aggression, this paper recommends that considerable systematic attention should also be given to the operation of automatic processes in bringing about this behavior. The concepts of automaticity and impulsivity are discussed briefly and it is proposed that many impulsive actions, particularly antisocial ones, are due to failures of restraint after they were initiated involuntarily. A number of experiments are reviewed in which situational stimuli automatically instigated or heightened aggressive inclinations. These have to do with associations in hostility displacement, reactions to stigmatized persons, and association in aggressive reactions to media violence. The last-mentioned studies deal especially with factors affecting the selection of the target for aggression. In discussing these findings it is suggested that after the crucial situational features had automatically initiated the sequence of determinants, the aggression displayed could have been due either to a hostile appraisal of the target or the activation of aggression-related bodily reactions as well as hostile ideas. It is also hypothesized that in at least one of the studies, an experienced negative affect might have instigated the aggression independently of any appraisals.     

Women's aggression in heterosexual conflicts

Using a longitudinal design, prior experience with violence as a victim and opportunity to aggress were examined as predictors of college women's verbal and physical aggression toward romantic partners. Five additional categories of predictors identified in previous research (experienced and witnessed parental aggression during childhood, attitudes accepting of aggression, aggressive/impulsive personality attributes, psychopathology, and prior use of aggression) were also examined. Blockwise hierarchical regression analyses were performed to reveal the best predictors of verbal and physical aggression during the first year of college. Significant predictors of verbal aggression were prior use of verbal aggression in heterosexual conflicts during adolescence, witnessed parental aggression, level of adolescent sexual victimization, being a target of rational conflict strategies during adolescence, and use of physical aggression in romantic adolescent relationships, as well as self-reported verbal aggression as an index of personality, weak emotional ties, number of sexual partners, and approval of sexual intimacy in many types of relationships. Significant predictors of physical aggression were prior use of physical aggression during adolescence, witnessing and experiencing parental aggression, being a victim of physical aggression in adolescent romantic relationships, weak emotional ties, low levels of alcohol/drug use, and opportunity to aggress. A developmental model of aggression in which childhood experiences with family violence contribute to the likelihood of subsequent involvement in relationship violence seems appropriate. Past experience with aggression may be particularly important for women. Cultural expectations about women's roles do not provide the social support for female aggression that is provided for male aggression. Adolescent sexual victimizations and general involvement in conflictual relationships (as target and perpetrator) predicted subsequent verbal aggression, whereas experiencing family violence and sustaining physical aggression in romantic relationships predicted subsequent physical aggression. © 1994 Wiley-Liss, Inc.     

Adolescent Female Aggression: Functions and Etiology

Despite the narrowing gap between male and female use of aggressive behavior, much of the extant aggression research has centered on males. Various internal, or psychological factors, including attachment, emotion regulation, and impulsivity, are typically examined independently from external, or social, factors, such as the quality of the family environment and exposure to community violence. Additionally, the studies rarely distinguish among forms and functions of aggression. The current study was the first to simultaneously examine these factors and their relationships to the distinct functions of aggression in a low-income urban community sample of adolescent females. Participants (N = 214) were recruited from grades 8 through 12 at a diverse all-girls public school in a city in the northeastern United States. Results indicated that greater attachment security and emotion regulation reduced the impact of a more negative family environment upon the use of reactive and proactive aggression. The results also demonstrated that impulsivity and the family environment mediated the relationships between exposure to community violence and the presence of reactive aggression. With higher levels of impulsivity, an increased use of reactive aggression was demonstrated. Lastly, in the context of greater exposure to community violence, a positive family environment decreased the use of reactive aggression. Overall, the results from this study suggested the role of these internal and external factors in the development of aggressive behavior in female adolescents. Further empirical experimental investigation may shed light on the most optimal interventions to prevent the development of aggression.     

Patterns of Women’s Aggression Against Partners and Others: Broadening Our Understanding of Violence

Research on women's aggression typically focuses on relational aggression. However, the study of violence must include multiple forms of violence such as aggression against partners and non‐partner others, while also considering victimization experiences by partners and non‐partners. The focus of this study is the multiple experiences of violence (perpetration and victimization) of women who are incarcerated. Incarcerated women are likely to experience higher rates of both than women in community settings, but most will be released in a brief period of time. Using a random sample (N = 580) we conducted cluster analyses to identify five patterns of women's aggression. Clusters varied depending on the target/s of aggression (i.e., partner and/or others), and type of aggression (i.e., physical and/or intimidation). Multinomial logistic regression was performed to determine the relationship between women's membership in a perpetration cluster and their victimization. Victimization history was related to an increased risk of perpetrating aggression, and varied depending on the target and type of aggression. Our findings provide support that research and interventions addressing women's use of aggression must also address their victimization history. Furthermore, results indicate that for some women, aggression towards partners and others is related. Future research should investigate multiple forms of aggression.     

Media violence use as a risk factor for aggressive behaviour in adolescence

Whether exposure to violence in the virtual reality of the media has an impact on users’ aggressive behaviour has been a controversial issue in academic as well as public debate. This article summarises a programme of research conducted with adolescents in Germany that presents cross-sectional and longitudinal evidence for the association between violent media use and aggression. It provides experimental evidence in support of mediating variables, such as hostile attributional style, increased normative acceptance of aggression, and emotional desensitisation, which might explain the pathways from media violence use to aggression. In addition it presents the development and experimental evaluation of a theory-based intervention designed to reduce media violence use and decrease its link with aggressive behaviour. The findings are discussed in the context of a large international body of research that points to the causal role of violent media use as a risk factor for aggressive behaviour.     

The cycle of violence as a function of PTSD and appetitive aggression: A longitudinal study with Burundian soldiers

During deployment, soldiers face situations in which they are not only exposed to violence but also have to perpetrate it themselves. This study investigates the role of soldiers' levels of posttraumatic stress disorder (PTSD) symptoms and appetitive aggression, that is, a lust for violence, for their engaging in violence during deployment. Furthermore, factors during deployment influencing the level of PTSD symptoms and appetitive aggression after deployment were examined for a better comprehension of the maintenance of violence. Semi-structured interviews were conducted with 468 Burundian soldiers before and after a 1-year deployment to Somalia. To predict violent acts during deployment (perideployment) as well as appetitive aggression and PTSD symptom severity after deployment (postdeployment), structural equation modeling was utilized. Results showed that the number of violent acts perideployment was predicted by the level of appetitive aggression and by the severity of PTSD hyperarousal symptoms predeployment. In addition to its association with the predeployment level, appetitive aggression postdeployment was predicted by violent acts and trauma exposure perideployment as well as positively associated with unit support. PTSD symptom severity postdeployment was predicted by the severity of PTSD avoidance symptoms predeployment and trauma exposure perideployment, and negatively associated with unit support. This prospective study reveals the importance of appetitive aggression and PTSD hyperarousal symptoms for the engagement in violent acts during deployment, while simultaneously demonstrating how these phenomena may develop in mutually reinforcing cycles in a war setting.     

Psychiatric nurses' experiences with inpatient aggression

Using a survey instrument, the experiences of psychiatric nurses with inpatient aggression were investigated in East London, U.K. On this “Perceptions of Prevalence Of Aggression Scale” (POPAS), annual experiences with 15 types of disruptive and aggressive behavior were rated anonymously. Staff members were also asked to disclose the number of days missed from work due to inpatient violence. On the basis of these POPAS forms, internal consistency of the instrument, mean reported aggression frequencies, and days missed from work due to violence were calculated. Internal consistency of the POPAS appeared to be reasonable. Verbal abuse and threats were experienced by most of the psychiatric nurses during a one‐year period (i.e., by about 80–90 percent of nurses). Sexual harassment or intimidation was also experienced relatively often on an annual basis (68 percent), particularly by female and young staff members. A minority of staff members (i.e., 16 percent) had experienced severe physical violence. Although not prevalent, this type of behavior was most strongly connected with reporting sick. In particular, staff members working with involuntarily admitted patients experienced much (severe) violence during their work. Although the validity of estimates of aggression prevalence with the POPAS instrument needs to be investigated further, such a survey may be helpful in gaining insight rather quickly into the level of day‐to‐day contact with aggressive behavior. Also, since information on verbal, physical, and sexual violence, and on days missed from work, can be provided anonymously, this rather delicate, but essential management information, may be accessed relatively easily with the POPAS. Aggr. Behav. 00:000–000, 2005. © 2005 Wiley‐Liss, Inc.     

Non-Violent Survival Strategies in the Face of Intimate Partner Violence and Economic Discrimination

Intimate partner violence (IPV) theory often locates violence equitably between women and men. Women, however, sustain greater degrees of injury than men and often use violence as a measure of protection rather than as an act of aggression. Yet measures of protection must be viewed in multiple contexts. In this case, the context is poverty, which reveals that violence by women in response to IPV is not the only way that women deal with the violence in their lives. This article explicates four strategies that battered women in poverty deploy in their protective trajectory and highlight alternative resistance strategies women use to overcome multiple structural barriers.     

Children and Political Violence from a Social Ecological Perspective: Implications from Research on Children and Families in Northern Ireland

The effects on children of political violence are matters of international concern, with many negative effects well-documented. At the same time, relations between war, terrorism, or other forms of political violence and child development do not occur in a vacuum. The impact can be understood as related to changes in the communities, families and other social contexts in which children live, and in the psychological processes engaged by these social ecologies. To advance this process-oriented perspective, a social ecological model for the effects of political violence on children is advanced. This approach is illustrated by findings and methods from an ongoing research project on political violence and children in Northern Ireland. Aims of this project include both greater insight into this particular context for political violence and the provision of a template for study of the impact of children’s exposure to violence in other regions of the world. Accordingly, the applicability of this approach is considered for other social contexts, including (a) another area in the world with histories of political violence and (b) a context of community violence in the US.     

Natural born killers: The genetic origins of extreme violence

The current article examines the influence of genetics and evolution on acts of extreme and criminal violence among human primates. Moderate aggression can function to increase an organism's reproductive success; extreme violence can place the organism at unnecessary risk. Genetic polymorphisms that have been linked to extreme acts of violence are reviewed as is research elucidating how genetic risk and environmental stress may interact to increase risk of extreme violence. Extreme violence is viewed as high-end variance in an evolutionarily adaptive process in which the propensity for aggression and violent behavior, in moderate doses, has been adaptive for individual humans.     

Overlap and correlates of different types of aggression among adults: Results from a cross‐sectional survey in Bogotá, Colombia

Our objective is to establish the prevalence and overlap among different forms of violence and the importance of known correlates of aggression in Bogotá, Colombia. Our method is a cross‐sectional household survey of violence amongst a random sample (n=3007) of the general population between the ages of 15 and 60. In this population the more severe forms of aggression tend to appear concurrently with the less severe forms. Multivariate analyses of the data show that a family history of crime, physical aggression among family members, lack of clarity of parental norms, beliefs justifying the use of violence, and alcohol consumption are the main correlates of verbal and physical aggression independent of age, gender and social class. Although the findings are limited by the cross‐sectional design, exclusion of the institutionalized population, and reliance on retrospective self‐reports, they provide population‐based estimates of different forms of aggression and support for known correlates of aggression in a Latin American context. Aggr. Behav. 29:191–201, 2003. © 2003 Wiley‐Liss, Inc.     

Sex differences in the development of physical aggression: An intergenerational perspective and implications for preventive interventions

This article reviews the state of knowledge on the development of chronic physical aggression (CPA), with the aim of identifying the most effective prevention strategies. We specifically focus on the early development of physical aggression, on sex differences in the use of physical aggression, and on the transmission of behavior problems from one generation to the other. The body of research on the development of CPA from the past three decades that we review shows increasing evidence that its prevention requires a long-term biopsychosocial developmental approach which also must include an intergenerational perspective. Recent genetic and epigenetic research has indicated that there are both important genetic and environmental effects on gene expression which start at conception. We conclude that one of the most effective strategies to break the intergenerational transmission of CPA involves giving long-term support to pregnant women with a history of behavior problems, their spouse, and their offspring.     

Reactive and proactive aggression: predictions to physical violence in different contexts and moderating effects of parental monitoring and caregiving behavior

This study aimed at (a) comparing the links of proactive and reactive aggression at 13 years of age to delinquency-related violence and dating violence at ages 16 and 17, and (b) examining the moderating effects of parental supervision, and mother's and father's warmth and caregiving behaviors on these links. Based on a sample of 525 Caucasian boys, the results showed that proactive aggression uniquely predicted delinquency-related violence, whereas reactive aggression uniquely predicted later dating violence. The relation between proactive aggression and delinquency-related violence, however, was moderated by parental supervision. The relation between reactive aggression and dating violence was moderated by mother's warmth and caregiving behavior. The implications of the findings for the theoretical and practical distinction between proactive and reactive aggression are discussed.     

Teacher-instigated in-school interpersonal violence: Types and prevalence in South African public schools

The study examined types and prevalence of interpersonal violence in South African schools. Data on in-school interpersonal violence by the South African Council of Teachers (SACE) were analysed. The sample consisted of 1 184 teachers (rural = 32.6%, urban = 59.8%, peri-urban = 7.6%). Following logistic regression analyses, results indicated male teachers were the majority offenders. Furthermore, results showed that female teachers and learners were over nine times more likely to be victims of all types of violence, as compared to males. Findings support a social role theory perspective of gendered aggression in which males are likely to resort to physical violence, while females may engage in verbal violence.