This collection of papers presents a representative selection of the National Institute of Justice's portfolio of gang-related research. The 10 papers are: (1) "A Decade of Gang Research: Findings of the National Institute of Justice Gang Portfolio" (Scott H. Decker); (2) "The Evolution of Street Gangs: An Examination of Form and Variation" (Deborah Lamm Weisel); (3) "Young Women in Street Gangs: Risk Factors, Delinquency, and Victimization Risk" (Jody Miller); (4) "Youth Gang Homicides in the United States in the 1990s" (Cheryl L. Maxson, G. David Curry, and James C. Howell); (5) "National Evaluation of the Gang Resistance Education and Training [G.R.E.A.T.] Program" (Finn-Aage Esbensen, Adrienne Freng, Terrance J. Taylor, Dana Peterson, and D. Wayne Osgood); (6) "Evaluating Nevada's Antigang Legislation and Gang Prosecution Units" (Terance D. Miethe and Richard C. McCorkle); (7) "Evaluation of a Task Force Approach to Gangs" (Susan Pennell and Roni Melton); (8) "Gang Prevention Programs for Female Adolescents: An Evaluation" (Katherine Williams, G. David Curry, and Marcia I Cohen); (9) "Reducing Gang Violence in Boston" (Anthony A. Braga and David M. Kennedy); and (10) "Developing a GIS-Based Regional Gang Incident Tracking System" (James W. Meeker, Katie J.B. Parsons, and Bryan J. Vila). (Papers contain references.) (SM).

This 10 papers present a selection of gang-related research. The genesis was the upsurge in gang crime beginning in the mid-1980s, which prompted expanded research in this area. The emphasis in this volume is on evaluations. Chapters: A Decade of Gang Research; The Evolution of Street Gangs; Young Women in Street Gangs; Youth Gang Homicides in the U.S. in the 1990s; National Evaluation of the Gang Resistance Ed. and Training (G.R.E.A.T.) Program; Evaluating Nevada's Anti-gang Legislation and Gang Prosecution Units; Evaluation of a Task Force Approach to Gangs; Gang Prevention Programs for Female Adolescents; Reducing Gang Violence in Boston; and Developing a GIS-Based Regional Gang Incident Tracking System. Tables.

Although a range of program and policy responses to youth gangs exist, most are largely based on suppression, implemented by the police or other criminal justice agencies. Less attention and fewer resources have been directed to prevention and intervention strategies that draw on the participation of community organizations, schools, and social service agencies in the neighborhoods in which gangs operate. Also underemphasized is the importance of integrating such approaches at the local level. In this volume, leading researchers discuss effective intervention among youth gangs, focusing on the ideas behind, approaches to, and evidence about the effectiveness of community-based, youth gang interventions. Treating community as a crucial unit of analysis and action, these essays reorient our understanding of gangs and the measures undertaken to defeat them. They emphasize the importance of community, both as a context that shapes opportunity and as a resource that promotes positive youth engagement. Covering key themes and debates, this book explores the role of social capital and collective efficacy in informing youth gang intervention and evaluation, the importance of focusing on youth development within the context of community opportunities and pressures, and the possibilities of better linking research, policy, and practice when responding to youth gangs, among other critical issues.

The United States has seen rapid proliferation of youth gangs since 1980. During this period, the number of cities with gang problems increased from an estimated 286 jurisdictions with more than 2,000 gangs and nearly 100,000 gang members in 1980 (Miller, 1992) to about 4,800 jurisdictions with more than 31,000 gangs and approximately 846,000 gang members in 1996(Moore and Terrett, in press). An 11-city survey of eighth graders found that 9 percent were currently gang members, and 17 percent said they had belonged to a gang at some point in their lives (Esbensen and Osgood, 1997).Other studies reported comparable percentages and also showed that gang members were responsible for a large proportion of violent offenses. In the Rochester site of the OJJDP-funded Program of Research on the Causes and Correlates of Delinquency, gang members (30 percent of the sample) self-reported committing 68 percent of all violent offenses (Thornberry, 1998). In the Denver site, adolescent gang members (14 percent of the sample) self-reported committing 89 percent of all serious violent offenses (Huizinga, 1997). In another study, supported by OJJDP and several other agenciesand organizations, adolescent gang members in Seattle (15 percent of the sample) self-reported involvement in 85 percent of robberies committed by the entire sample (Battin et al., 1998).This Bulletin reviews data and research to consolidate available knowledge on youth gangs that are involved in criminal activity. Following a historical perspective, demographic information ispresented. The scope of the problem is assessed, including gang problems in juvenile detention and correctional facilities. Several issues are then addressed by reviewing gang studies to provide aclearer understanding of youth gang problems.An extensive list of references is provided for further review.

This monograph reviews definitional issues related to gangs, places the growth of gangs in an evolutionary perspective, and examines the links between gang membership and crime. The discussion emphasizes gang processes, especially as those processes offer opportunities for intervention and prevention. These processes include joining the gang, initiation, assuming roles, participating in gang violence, and leaving the gang. The last decade has produced an unprecedented increase in gangs and gang violence. Federal and local governments have often reacted with strategies to suppress gangs, an ineffective approach. One successful approach, the Boston Gun project, demonstrates that the success of any initiative depends largely on its ability to integrate a number of approaches. Law enforcement and various levels of government must work together to provide social opportunities, and to create intervention programs based on gang processes and problem-solving models that have proven successful in other settings. (NCJRS, modified).