In the typology of violence[2] in the figure below, the horizontal array shows who is affected and the vertical array describes how they are affected. The typology divides violence into three broad categories according to characteristics of those committing the violent act: self-directed violence interpersonal violence collective violence The nature of violent acts, on the vertical axis, can be: physical sexual psychological involving deprivation or neglect

This initial categorization differentiates between violence a person inflicts upon himself or herself, violence inflicted by another individual or by a small group of individuals, and violence inflicted by larger groups such as states, organized political groups, militia groups and terrorist organizations. These three broad categories are each divided further to reflect more specific types of violence. Self-directed violence is subdivided into suicidal behavior and self-abuse. The former includes suicidal thoughts, attempted suicides – also called ‘‘para suicide’’ or ‘‘deliberate self-injury’’ in some countries – and completed suicides. Self-abuse, in contrast, includes acts such as self-mutilation. Interpersonal violence is divided into two subcategories: Family and intimate partner violence – that is, violence largely between family members and intimate partners, usually, though not exclusively, taking place in the home. Community violence – violence between individuals who are unrelated, and who may or may not know each other, generally taking place outside the home. The former group includes forms of violence such as child abuse, intimate partner violence and abuse of the elderly. The latter includes youth violence, random acts of violence, rape or sexual assault by strangers, and violence in institutional settings such as schools, workplaces, prisons and nursing homes. Collective violence is subdivided into social, political and economic violence. Unlike the other two broad categories, the subcategories of collective violence suggest possible motives for violence committed by larger groups of individuals or by states. Collective violence that is committed to advance a particular social agenda includes, for example, crimes of hate committed by organized groups, terrorist acts and mob violence. Political violence includes war and related violent conflicts, state violence and similar acts carried out by larger groups. Economic violence includes attacks by larger groups motivated by economic gain – such as attacks carried out with the purpose of disrupting economic activity, denying access to essential services, or creating economic division and fragmentation. Clearly, acts committed by larger groups can have multiple motives. This typology, while imperfect and far from being universally accepted, does provide a useful framework for understanding the complex patterns of violence taking place around the world, as well as violence in the everyday lives of individuals, families and communities. It also overcomes many of the limitations of other typologies by capturing the nature of violent acts, the relevance of the setting, the relationship between the perpetrator and the victim, and – in the case of collective violence – possible motivations for the violence. However, in both research and practice, the dividing lines between the different types of violence are not always so clear.