General prevention may be directed at violence per se, but specific treatment must be directed to individuals who have demonstrated their propensity for violence through repeat offenses, as this is currently the only certain way the most violence-prone individuals present themselves to jurisprudence. These results are important for the description of the development of persistently violent individuals. That comparatively few individuals present with disinhibitory behaviors very early in life, go on to a career of “life-course persistent antisocial behavior,” and will ultimately account for more than half of all violent crimes, and an even larger proportion of aggravated crimes, were presented by Moffit and Caspi using (among others) data-sets from the Dunedin birth cohort studies. It is also necessary to distinguish between risk for single-episode violent crime and for the development of persistent violence in individuals. In order to establish specific treatments and preventive strategies, it is crucial to have a detailed understanding of the distribution of violent crimes across first time offenders and recidivists at different stages of their violent careers. The World Health Organization (WHO) has stated that the prevention of violence must be a global public health priority. The global costs of violent crimes, both in terms of economy and human suffering, are massive, and the impact of violence on worldwide insecurity, disability, and mortality is predicted to increase in the coming decades. In 2000, homicides accounted for half a million deaths worldwide almost twice as many as in wars during the same year. Interpersonal violence remains one of the leading causes of impaired quality of life and mortality in the world, especially among people aged 15–44 years.