They suggest that research typically focuses on lethal violence, often looks at homicide rates of death due to warfare, but ignore the less obvious forms of violence. Society and culture
Beyond deaths and injuries, highly prevalent forms of violence (such as child maltreatment and intimate partner violence) have serious lifelong non-injury health consequences. Victims may engage in high-risk behaviours such as alcohol and substance misuse and smoking, which in turn can contribute to cardiovascular disorders, cancers, depression, diabetes and HIV/AIDS, resulting in premature death. The balances of prevention, mitigation, mediation and exacerbation are complex, and vary with the underpinnings of violence. Economic effects
In countries with high levels of violence, economic growth can be slowed down, personal and collective security eroded, and social development impeded. Families edging out of poverty and investing in schooling their sons and daughters can be ruined through the violent death or severe disability of the main breadwinner. Communities can be caught in poverty traps where pervasive violence and deprivation form a vicious circle that stifles economic growth. For societies, meeting the direct costs of health, criminal justice, and social welfare responses to violence diverts many billions of dollars from more constructive societal spending. The much larger indirect costs of violence due to lost productivity and lost investment in education work together to slow economic development, increase socioeconomic inequality, and erode human and social capital. Additionally, communities with high level of violence do not provide the level of stability and predictability vital for a prospering business economy.
All these factors have been shown to be important in several types of violence. Finally, the fourth level looks at the broad societal factors that help to create a climate in which violence is encouraged or inhibited: the responsiveness of the criminal justice system, social and cultural norms regarding gender roles or parent-child relationships, income inequality, the strength of the social welfare system, the social acceptability of violence, the availability of weapons, the exposure to violence in mass media, and political instability. Child-rearing
While studies showing associations between physical punishment of children and later aggression cannot prove that physical punishment causes an increase in aggression, a number of longitudinal studies suggest that the experience of physical punishment has a direct causal effect on later aggressive behaviors. Cross-cultural studies have shown that greater prevalence of corporal punishment of children tends to predict higher levels of violence in societies. For instance, a 2005 analysis of 186 pre-industrial societies found that corporal punishment was more prevalent in societies which also had higher rates of homicide, assault, and war. In the United States, domestic corporal punishment has been linked to later violent acts against family members and spouses. The American family violence researcher Murray A. Straus believes that disciplinary spanking forms "the most prevalent and important form of violence in American families", whose effects contribute to several major societal problems, including later domestic violence and crime. Psychology
The causes of violent behavior in people are often a topic of research in psychology.