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Civil commitment laws, which serve to protect individuals from being unreasonably detained or forced into treatment against their will, can also prevent professionals from treating someone who does not recognize his or her need for treatment. Other kinds of mental disorders that do not rise to the level of serious mental illness also are associated with gun violence and criminal behavior generally. For example, conduct disorder and antisocial personality disorder are associated with increased risk for violence. (This link is not surprising because violent behavior is counted as one of the symptoms that helps qualify someone for the diagnosis.) Nevertheless, there are well-established, scientifically validated mental health treatment programs for individuals with these disorders, such as multisystemic therapy, that can reduce violent recidivism (Henggeler, 2011). Substance abuse is another form of mental disorder that is a risk factor for violence in the general population and also increases the risk for violence among persons with serious mental illness (Van Dorn, Volavka, & Johnson, 2012). These observations reflect the complexity of relationships among serious mental illness, mental disorders, and violence. In contrast to homicide, suicide accounts for approximately 61% of all firearm fatalities in the United States (CDC, 2013a), and more than 90% of persons who commit suicide have some combination of depression, symptoms of other mental disorders, and/or substance abuse (Moscicki, 2001). This suggests that mental health and mental illness are especially relevant to understanding and preventing suicide, the leading type of firearm-related death. Prediction and Prevention The prediction of an individual’s propensity for violence is a complex and challenging task for mental health professionals, who often are called upon by courts, correctional authorities, schools, and others to assess the risk of an individual’s violence. Mental health professionals are expected to take action to protect potential victims when they judge that their patient or client poses a danger to others. However, decades of research have established that there is only a moderate ability to identify individuals likely to commit serious acts of violence. Much depends on the kind of violence and the time frame for prediction. For example, there are specialized instruments for the assessment of violence risk among sex offenders, civilly committed psychiatric patients, and domestic violence offenders. However, the time frame and focus for these predictions often are broadly concerned with long-term predictions that someone will ever be violent with anyone rather than whether a person will commit a particular act of targeted violence. Research has moved the field beyond the assessment of “dangerousness” as a simple individual characteristic applicable in all cases to recognize that predictive efforts must consider a range of personal, social, and situational factors that can lead to different forms of violent behavior in different circumstances. Moreover, risk assessment has expanded to include concepts of risk management and interventions aimed at reducing risk.
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