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 title is part of The Wadsworth Professionalism in Policing Series, edited by Samuel Walker. This reader is a descriptive presentation of current practices within policing and juvenile justice (focusing on gangs) that utilize the community-policing model. By looking at specific strategies and their efficacy, the authors attempt to combat a major perceived problem with community policing; that the methodology of community policing can be subjective and nebulous, using ill-defined and misinterpreted practices. This book shows what is working for agencies across the country and how these "best practices" can be employed.

This systematic analysis of the youth gang problem in the USA focuses on current patterns of gang behaviour, with reference to historical and cross-cultural dimensions. The author integrates his own theory and practices with material on research programmes set up to address the problem.

The Second Edition of Gangs in America brings together some of the best new research on the subject. After a section that addresses definitional and measurement issues, the book presents: an assessment of behavioural, ecological and socioeconomic dimensions of gangs; a discussion of important ethnic and gender factors; and findings concerning the reciprocal relationship between research and community experience with gangs.

This volume examines the leading issues on the correlates of violent behaviour and its measurement. It presents both summaries of existing work and reports of original research and brings the reader up to date on the status of research on such topics as measuring violent behaviour, individual criminal careers, gender, race and crime, and gang violence. Violent Crime, Violent Criminals represents the state of current knowledge in the study of violence.