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Chapter 1OVERVIEW OF THE REPORT'S CHAPTERSThe Surgeon General's report on youth violence reviews a vast, multidisciplinary, and often controversial research literature. Chapters 2 through 5 address, respectively, the extent and magnitude of youth violence; the developmental characteristics of, or paths to, youth violence; personal and environmental factors that may either place a child or adolescent at risk of violent behavior or protect a young person from succumbing to those risk factors; and violence intervention and prevention programs. The final chapter in the report identifies areas of opportunity for future efforts to combat and prevent youth violence. This section provides a brief overview of each chapter, while the following section presents a summary of key conclusions drawn from each. Chapter 2 examines the magnitude of and trends in youth violence over the last two decades. It describes two different, but complementary ways of measuring violenceofficial reports and self-reports. Official arrest data offer an obvious means of determining the extent of youth violence. Indeed, a surge in arrests for violent crimes marked what is now recognized as an epidemic of youth violence from 1983 to 1993. Arrests were driven largely by the rapid proliferation of firearms use by adolescents engaging in violent acts and the likelihood that violent confrontations wouldas they didproduce serious or lethal injuries. Today, with fewer young people carrying weapons, including guns, to school and elsewhere than in the early 1990s, violent encounters are less likely to result in homicide and serious injury and therefore are less likely to draw the attention of police. By 1999, arrest rates for homicide, rape, and robbery had all dropped below 1983 rates. In contrast, arrest rates for aggravated assault remained higher than they were in 1983, having declined only 24 percent from the peak rates in 1994. Another way of measuring violence is on the basis of confidential reporting by youths themselves. Confidential surveys find that 10 to 15 percent of high school seniors report having committed an act of serious violence in recent years. These acts typically do not come to the attention of police, in part because they are less likely to involve firearms than in previous years. Over the past two decades, self-reported violence by high school seniors increased nearly 50 percent, a trend similar to that found in arrests for violent crimes. But this proportion has not declined in the years since 1993it remains at peak levels. Chapter 2 considers how and to what extent arrest data and self-report data vary, including variations by sex and race or ethnicity. In the aggregate, the best available evidence from multiple sources indicates that youth violence is an ongoing national problem, albeit one that is largely hidden from public view. Chapter 3 examines routes that may lead a young person into violence. Viewed from a developmental perspective, violence stems from a complex interaction of individuals with their environment at particular times in their lives. Longitudinal research has enabled investigators to describe the emergence of violence in terms of two, and possibly more, life-course trajectories. Chapter 3 discusses the early-onset and late-onset emergence of violence, which occur before and after puberty, respectively. These trajectories offer insights into the likely course, severity, and duration of violence over the life course and have practical implications for the timing of intervention programs and strategies. The chapter reviews research on the co-occurrence of serious violence and other problems, including drug use and mental disorders. Finally, it underscores the importanceand the paucityof research on factors associated with the cessation of youth violence or its continuation into adulthood. Extensive research in recent decades has sought to identify various personal characteristics and environmental conditions that either place children and adolescents at risk of violent behavior or that seem to protect them from the effects of risk. Risk and protective factors, which are the focus of Chapter 4, can be found in every area of life. They exert different effects at different stages of development, they tend to appear in clusters, and they appear to gain strength in numbers. As the chapter notes, risk probabilities apply to groups, not to individuals. Although risk factors are not necessarily causes, a central aim of the public health approach to youth violence is to identify these predictors and determine when in the life course they typically come into play. Such information enables researchers to design preventive programs that can be put in place at just the right time to be most effective. The chapter examines risk from the perspectives of both childhood and adolescence and, within each of these developmental periods, considers risk factors occurring in the individual, family, school, peer group, and community domains. Childhood risk factors for violence in adolescence include involvement in serious (but not necessarily violent) criminal acts and substance use before puberty, being male, aggressiveness, low family socioeconomic status/poverty, and antisocial parentsall either individual or family risk factors. The influence of family is largely supplanted in adolescence by peer influences, thus risk factors with the largest predictive effects in adolescence include weak social ties, ties to antisocial or delinquent peers, and belonging to a gang. Having committed serious (but not necessarily violent) criminal offenses is also an important risk factor in adolescence. Identifying and understanding how protective factors influence behavior is potentially as important to preventing and stopping violence as identifying and understanding risk factors. Several protective factors have been proposed, but to date only two have been found to buffer the risk of violencean intolerant attitude toward deviance and commitment to school. Protective factors warrant, and are beginning to receive, more research attention. Despite past contentions that "nothing works" to prevent youth violence, the evidence presented in Chapter 5 demonstrates that prevention efforts can be effective against both early- and late-onset violence in the general youth population, high-risk youths, and even youths who are already violent or seriously delinquent. The chapter highlights 27 specific programs that, based on existing data, help prevent youth violence. The most effective of these programs combine components known to prevent violence by themselves, particularly social skills training for youths and interventions that include parents or entire families. Chapter 5 also highlights important limitations in the current research on youth violence prevention. Little is known about the scientific effectiveness of hundreds of programs now being used in U.S. schools and communities. This situation is disconcerting, given that many well-intentioned youth violence prevention programs have been found ineffective or harmful to youths. Even less is known about how to implement effective programs on a national scale without compromising their results. The information presented in Chapter 5 shows that youth violence prevention not only works, it can also be cost-effective. In a number of cases, the long-term financial benefits of prevention are substantially greater than the costs of the programs themselves. These promising findings indicate that prevention plays an important role in providing a safe environment for youths. Finally, Chapter 6 presents several options for future action. First, the scientific base must continue to be expanded. Effective interventions exist, but only continued research can document those programs that meet a standard of effectiveness and those that do notand should therefore be discarded. The chapter identifies the following courses of action:
CHAPTER CONCLUSIONS
PREPARATION OF THE REPORTTo address the troubling presence of violence in the lives of U.S. youths, the Administration and Congress urged the Surgeon General to develop a report on youth violence, with particular focus on the scope of the problem, its causes, and how to prevent it. Surgeon General Dr. David Satcher requested three agencies, all components of the Department of Health and Human Services, to share lead responsibility for preparing the report. The agencies are the Centers for Disease Control and Prevention (CDC), the National Institutes of Health (NIH), and the Substance Abuse and Mental Health Services Administration (SAMHSA). Under Dr. Satcher's guidance, these agencies established a Planning Board comprising individuals with expertise in diverse disciplines and professions involved in the study, treatment, and prevention of youth violence. The Planning Board also enlisted individuals representing various Federal departments, including particularly the Department of Justice (juvenile crime aspects of youth violence), the Department of Education (school safety issues), and the Department of Labor (the association between youth violence and youth employment, and out-of-school youth). Invaluable assistance was obtained as well from individual citizens who have founded and operate nonprofit organizations designed to meet the needs of troubled and violent youths. Most important, young people themselves accepted invitations to become involved in the effort. All of these persons helped to plan the report and participated in its prepublication reviews. REFERENCESAmerican Psychological Association. (1993). Violence and youth: Psychology's response. Volume I: Summary report of the American Psychological Association Commission on Violence and Youth. Washington, DC. Bergman, L. (1992). Dating violence among high school students. 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