Gangs and Violence: Disentangling the Impact of Gang Membership on the Level and Nature of Offending

Objectives

To determine whether membership in youth gangs provides a unique social forum for violence amplification. This study examines whether gang membership increases the odds of violent offending over and above involvement in general delinquent and criminal behavior.

Methods

Five waves of data from a multi-site (seven cities) panel study of over 3,700 youth originally nested within 31 schools are analyzed. We estimate four level repeated measures item response theory models, which include a parameter to differentiate the difference in the log of the expected event-rate for violent offense items to the log of the expected event-rate for nonviolent offense items.

Results

Depending on the comparison group (gang youth, overall sample), periods of active gang membership were associated with a 10 or 21% increase in the odds of involvement in violent incidents. When the sample is restricted to youth who report gang membership during the study, the proportionate increase in the odds of violence associated with gangs is statistically similar for males and females. After youth reported leaving the gang their propensity for violence was not significantly different than comparison group observations, although levels of general offending remain elevated.

Conclusions

While results are limited by the school-based sampling strategy, the importance of gang prevention and intervention programming for violence reduction is highlighted. Preventing youth from gang membership or shortening the length of gang careers through interventions may reduce absolute levels of violence.     

Groups, gangs, and delinquency: Does organization matter?

Purpose

A consistent finding of research on delinquency has been that gang members show higher levels of delinquent behavior than non-gang members. However, research attempting to understand the mechanisms underlying this finding is lacking. The basic premise of the current article is that the level of organization found in delinquent groups and gangs matters in clarifying the relationship between membership and delinquency.

Methods

This article examined the association between organization and delinquency in a sample of 523 self-reported juvenile offenders from a high school survey conducted in the province of Quebec, Canada.

Results

The results showed that 1) there is clearly something special about membership in a gang that influences delinquency beyond the more general membership in a delinquent group; 2) the key to understanding finding lies, in part, in the level of organization found in gangs. Organization emerged as the most important factor associated with general delinquency, involvement in violence, and in drug supply offences, significantly (but not completely) reducing the effect of gang membership on delinquency.

Conclusions

Even if most delinquent associations show little signs of formal structure and organization, this study demonstrates the importance of organization as a key mechanism to understand the gang effect on delinquency.     

Partying,Cruising, and Hanging in the Streets: Gangs,Routine Activities,and Delinquency and Violence in Chicago, 1959–1962

Objectives

Examine relationships between routine activities, character contests in the form of “signifying,” and general delinquency and fighting in a street gang context.

Methods

Samejima’s (Estimation of latent ability using a response pattern of graded scores. Psychometrika monograph supplement 17. Psychometric Society, Richmond, VA, Retrieved 10 Aug 2011, from http://www.psychometrika.org/journal/online/MN17.pdf, 1969) graded response models and multilevel ordinal logistic regression models are estimated using data from Short and Strodtbeck (Group process and gang delinquency. University of Chicago Press, Chicago, 1965) study of street gangs in Chicago, 1959–1962. The primary sample consists of 490 boys representing 10 black gangs, 4 white gangs, 9 black lower-class groups, 4 white lower-class groups, 2 black middle-class groups, and 2 white middle-class groups.

Results

Unstructured and unsupervised socializing with peers significantly increased the likelihood of delinquency among the boys and explained a significant portion of the group-level gang effect. In addition, the more time the boys spent hanging in the streets and attending parties, the more likely they were to participate in signifying, which, in turn, increased their risk of fighting.

Conclusions

Findings provide evidence that gangs contribute to delinquency partly through their effect on the routine activities of members. Findings also suggest that signifying is an important mechanism by which unstructured and unsupervised socializing with peers leads to violence.     

Uncovering the Pathways Between Gang Membership and Violent Victimization

Objectives

Gang members are more likely to be victimized violently than non-gang youth, but the extent to which this relationship is confounded, direct, or mediated remains unclear. This study responds to recent calls by scholars for more methodologically sound research in this area with the goal of uncovering the pathways between gang membership and violent victimization.

Methods

Using a school-based longitudinal sample of adolescents, the current study uses Preacher and Hayes multiple mediator structural equation modeling and counterfactual methodology to test whether and which theoretical pathways—self-control, cultural orientations, routine activity, and lifestyle theory—mediate the contemporaneous and prospective effects of gang membership on violent victimization.

Results

The results indicate that 27 % of the contemporaneous effects of gang membership on victimization is attributable to selection, with the remaining 73 % endogenous to gang membership, supporting Thornberry et al.’s (J Res Crime Delinquency 30:55–87, 1993) enhancement model. Entry into a gang increases risk taking, temper, self-centeredness, negative peer commitment, neutralization of violence, aggressive conflict resolution, unstructured socializing, and delinquency, and decreases empathy and positive peer commitment. The contemporaneous gang membership-victimization link was fully mediated, due almost entirely to delinquency. Prospective models reveal a gang membership-victimization link that is fully confounded by selection, although attrition and desistance from gangs may be responsible for this finding.

Conclusions

The existing risky attitudes and behaviors of youth who select into gangs matters a great deal for understanding the gang membership-victimization link, but these very risks are exacerbated upon entry into a gang. Our mediation findings suggest that interventions targeting highly delinquent gang members should pay dual dividends of reducing delinquency and victimization.

     

Deterring Gang-Involved Gun Violence: Measuring the Impact of Boston’s Operation Ceasefire on Street Gang Behavior

Objectives

The relatively weak quasi-experimental evaluation design of the original Boston Operation Ceasefire left some uncertainty about the size of the program’s effect on Boston gang violence in the 1990s and did not provide any direct evidence that Boston gangs subjected to the Ceasefire intervention actually changed their offending behaviors. Given the policy influence of the Boston Ceasefire experience, a closer examination of the intervention’s direct effects on street gang violence is needed.

Methods

A more rigorous quasi-experimental evaluation of a reconstituted Boston Ceasefire program used propensity score matching techniques to develop matched treatment gangs and comparison gangs. Growth-curve regression models were then used to estimate the impact of Ceasefire on gun violence trends for the treatment gangs relative to comparisons gangs.

Results

This quasi-experimental evaluation revealed that total shootings involving Boston gangs subjected to the Operation Ceasefire treatment were reduced by a statistically-significant 31 % when compared to total shootings involving matched comparison Boston gangs. Supplementary analyses found that the timing of gun violence reductions for treatment gangs followed the application of the Ceasefire treatment.

Conclusions

This evaluation provides some much needed evidence on street gang behavioral change that was lacking in the original Ceasefire evaluation. A growing body of scientific evidence suggests that jurisdictions should adopt focused deterrence strategies to control street gang violence problems.     

Sociological measurement confusion,paradigmatic imperfection,and etiological nirvana: Striking a pragmatic balance in pursuing science

Extant gang research supports an enhancement effect of membership on delinquency; that is, while delinquent youths may be attracted to gangs, it is also true that gang membership increases delinquency among youths and that while delinquency levels decrease after gang membership, they do not decrease to nongang levels. In this paper, we build on this research, examining the relationship between youth gang membership and violent victimization in a general sample of adolescents. We find that gang member victimization rates are higher than nongang member rates, not only during membership, but before and after as well. Thus an enhancement model of gang membership appears to best fit both offending and victimization rates. This effect of gang affiliation on victimization goes beyond gang members' involvement in violent offending; violence and gang status equate with cumulative disadvantage in terms of violent victimization. Additionally, contrary to gang youths' perceptions, gangs appear to offer no protective value to gang members; we find no differences in violent victimization between youths who joined gangs for protection and those who joined for other reasons, either before or after joining.     

Birds of a Feather Fight Together: Status-Enhancing Violence,Social Distance and the Emergence of Homogenous Gangs

Objectives

This study proposes a theoretical framework for understanding two empirical findings from gang research: (1) gangs are generally racially homogenous, even in heterogeneous environments, and (2) gang violence tends to be intra-racial. We draw from the extensive literature on street gangs as well as from research on group formation and status-enhancing behavior to develop a theoretical model of gang formation.

Methods

Using game theory, we model the simultaneous decisions of individuals to commit status-enhancing acts of violence and to seek protection by joining a gang. We then conduct computer simulations to examine the resulting patterns of violence and gang composition.

Results

We demonstrate that as long as some social distance exists between racial groups in a community, gang violence will be intra-racial and gangs will be homogenous. We find that our results are robust to a number of simple variations of the model and allow us to generate several hypotheses about the nature of gang formation and patterns of violence.

Conclusions

When violence is motivated by socially constructed rewards, socially closer targets are likely to yield greater rewards. In such a system, individuals must reduce their likelihood of victimization by entering a social contract of non-violence (i.e. gang membership) with individuals who might view them as status-enhancing targets (i.e. socially close individuals). The result is that gangs are made up of socially close individuals interested in attacking other socially close individuals. Therefore, gangs tend to be racially homogenous and violence is overwhelmingly intra-racial.

     

The continued importance of measuring potentially harmful impacts of crime prevention programs: the academy of experimental criminology 2014 Joan McCord lecture

Objective

Joan McCord was a very influential criminologist and strong advocate for measuring potentially harmful effects in well-meaning crime prevention programs. This paper demonstrates the continued importance of measuring adverse program effects by reviewing the available research evidence on classic and contemporary gang streetworker programs.

Methods

This paper draws upon the evaluation findings of existing gang streetworker evaluations and presents the unpublished results of a rigorous quasi-experimental evaluation of a contemporary gang streetworker program that directly measured whether the intervention impacted the violent gun behaviors of treated gangs relative to untreated gangs.

Results

Evaluations of classic pre-1970s gang streetworker programs generally found that these interventions increased gang delinquency by reinforcing group identity and enhancing gang cohesion. Evaluations of contemporary gang streetworker programs are mixed, with several studies documenting concerning increases in gang violence. An unpublished evaluation found that the streetworker program was well-implemented and executed. However, the intervention was associated with increased shootings by and against treatment gangs relative to control gangs.

Conclusion

These findings suggest that contemporary gang streetworker programs are at high risk of generating unintended adverse outcomes for treated gang members relative to their untreated counterparts. Existing and planned programs should be monitored with a high degree of vigilance and evaluated with controlled evaluation designs.

     

Subculture,Gang Involvement,and Delinquency: A Study of Incarcerated Youth in China

The purpose of this study is to examine youth gang phenomena in China employing a two-step approach. The first step is to apply the delinquent subculture perspective to the explanation of variation in gang involvement; the second is to investigate the relationship between youth gang involvement and self-reported delinquency. The data for the study were collected from face-to-face interviews conducted with adjudicated youth offenders incarcerated in a province-run juvenile prison. Structural equation modeling is used to assess the direct and indirect effects of delinquent subculture exposure and gang involvement on three outcome variables of delinquency. The primary finding is that exposure to a subculture of violence is indeed a significant predictor of gang involvement. Importantly, gang involvement is significantly correlated with both violent offending and drug offending.     

Validating Self-Nomination in Gang Research: Assessing Differences in Gang Embeddedness Across Non-, Current,and Former Gang Members

Objective

The study of gang members is closely linked to the self-nomination method. It is timely to revisit the criterion validity of self-nomination, as recent theoretical and empirical advancements in gang disengagement necessitate further differentiating current from former gang members. This study assessed differences in gang embeddedness—a construct that taps individual immersion within deviant social networks—across three groups: current gang members, former gang members, and those individuals who have never joined a gang.

Methods

Data gathered in 2011 from a high-risk sample of 621 individuals in five cities were used to assess the validity of the self-nomination method. Standardized differences in a mixed graded response model of gang embeddedness were evaluated across the three statuses of gang membership.

Results

Self-nomination was strongly related to embeddedness in gangs, even after controlling for demographic, theoretical, and gang-related factors. The strongest predictor of gang embeddedness was self-nomination as a current or a former gang member, although current gang members maintained levels of gang embeddedness about one standard deviation greater than former gang members. Self-nomination was also the primary determinant of gang embeddedness for males, females, whites, blacks, and Hispanics.

Conclusion

The results of this study provide strong evidence in support of the use of self-nomination to differentiate between non-gang and gang members as well as current and former gang members, adding to a body of research demonstrating that self-nomination is a valid measure of gang membership.     

Correlates and consequences of pre-incarceration gang involvement among incarcerated youthful felons

Objective

The primary aim of the study is to document the prevalence and variation in types of pre-incarceration gang membership among a sample of incarcerated felons. The second goal is to consider if and how pre-incarceration gang involvement affects institutional behavior.

Materials and Methods

This study builds on the existing literature by considering if and how different types of pre-incarceration gang involvement effect prison misconduct. This relationship is examined while controlling for attitudinal measures and pre-prison social characteristics that may condition entrance into gangs and involvement in serious prison misconduct. The study includes a sample of 504 youthful adults incarcerated in a large Midwestern state in 1996.

Results

The results highlight that there is a high degree of variation in pre-incarceration gang involvement. Moreover, involvement in different types of gangs also is a significant predictor of prison misconduct. Individuals involved in organized/criminal gangs at the point of incarceration experienced significantly more serious misconduct reports than their non-gang counterparts, but similar findings were not evident for those involved in unorganized gangs.

Conclusions

Even among a relatively serious population of youthful adult offenders, pre-incarceration gang involvement is uncommon. Pre-incarceration involvement in organized gangs represents a significant risk factor for prison misconduct.     

GROUP COHESIVENESS,GANG MEMBER PRESTIGE,AND DELINQUENCY AND VIOLENCE IN CHICAGO, 1959–1962

Data from Short and Strodtbeck's ( 1965 ) study of gangs in Chicago, 1959–1962, are used to examine the association between intragang friendship networks and violent and delinquent behaviors among 248 boys from 11 different gangs (9 Black and 2 White). Contrary to expectations of tightly connected gangs being the most dangerous, estimates from multilevel overdispersed Poisson regression models showed significantly increased mean levels of violence among gangs with relatively low group cohesion. No relationship was observed between delinquency and gang cohesiveness, regardless of the specific network measure employed. At the individual level, popular boys were at a significantly increased risk for both delinquency and violence, suggesting a link between prestigious positions within the structure of gang friendship networks and conformity with group processes. The implications of these findings for detached worker intervention are discussed.     

GANG MEMBERSHIP AS A TURNING POINT IN THE LIFE COURSE*

Gang‐involved youth are disproportionately involved in criminal behavior, especially violence. The processes accounting for this enhanced illegal activity, however, remain speculative. Employing a life‐course perspective, we propose that gang membership can be conceptualized as a turning point in the lives of youth and is thus associated with changes in emotions, attitudes, and routine activities, which, in turn, increase illegal activity. Using prospective data from a multisite sample of more than 1,400 youth, the findings suggest that the onset of gang membership is associated with a substantial change in emotions, attitudes, and social controls conducive to delinquency and partially mediate the impact of gang membership on delinquent activity. Desistance from gangs, however, was not associated with similar systematic changes in these constructs, including delinquent involvement.     

Understanding the relationship between violent victimization and gang membership

Purpose

Research examining factors that precipitate gang violence has contributed substantially to our understanding of gangs and gang activity with respect to offending, yet we still know relatively little about how gangs influence members’ risk of victimization. The current study examines three hypotheses: (1) gang involvement and involvement in other risky lifestyles is related to violent victimization, (2) involvement in gang crime is associated with violent victimization, and (3) the presence of rival gangs is related to violent victimization.

Methods

The present study uses data obtained from 909 recently booked juvenile arrestees who were interviewed as part of the Arizona Arrestee Drug Abuse Monitoring (ADAM) program.

Results

Our findings indicated that prevalence of violent victimization was highest among gang members, followed by former gang members, gang associates, and non-gang members. After controlling for involvement in gang crime, however, gang membership per se did not significantly influence the juveniles’ risk of serious violent victimization.

Conclusions

Our results call into question the conclusion that gang membership alone increases the likelihood of violent victimization vis-à-vis lifestyle/routine activities and/or collective liability. Instead our findings support prior research on the victim-offender overlap, that offending behaviors increase the risk of victimization.     

Girl Members of Deviant Youth Groups,Offending Behaviour and Victimisation: Results from the ISRD2 in Italy and Switzerland

Although a lot of research has been conducted on the delinquency of boys who are members of gangs, only a few quantitative studies have analysed the involvement of girl gang members in delinquency and its link with victimisation. In this study, the prevalence rates of girls who are members of gangs in Italy and in Switzerland are shown. We compared the Italian data (N = 5.784) and Swiss data (N = 3.459) from the second wave of the International Self-Reported Delinquency Study (ISRD-2); the population used for this comparison was made up of teenagers from the ages of 13 to 16. Members of deviant youth groups accounted for 5.7% of the Italian sample and 4.7% of the Swiss sample; in both countries, about a third of gang members were girls. In general, girls who are members of gangs commit more delinquent acts than both girls and boys who are not members of gangs. Girl gang members are also more often victimised than girls and boys who are not members of a deviant youth group.     

GANGS,DRUGS, AND DELINQUENCY IN A SURVEY OF URBAN YOUTH*

Youth delinquent gangs have been given considerable academic and media attention during the past decade. Much of the attention has focused on the violence and drug dealing in which gang members are assumed to be involved. Recent knowledge about gangs has relied primarily on data obtained from police gang units and from observational or case studies. Very little information has been derived from surveys or interviews with a more general sample of youths. In this paper, data from the Denver Youth Survey, a longitudinal study of families, are used to examine: (1) the prevalence and demographic composition of gangs: (2) the degree to which gang members are involved in illegal activities: and (3) the temporal relationship between criminal offending and gang membership.     

“From Your First Cigarette to Your Last Dyin’ Day”: The Patterning of Gang Membership in the Life-Course

Objective

Motivated by the reorientation of gang membership into a life-course framework and concerns about distinct populations of juvenile and adult gang members, this study draws from the criminal career paradigm to examine the contours of gang membership and their variability in the life-course.

Methods

Based on nine annual waves of national panel data from the NLSY97, this study uses growth curve and group-based trajectory modeling to examine the dynamic and cumulative prevalence of gang membership, variability in the pathways into and out of gangs, and the correlates of these pathways from ages 10 to 23.

Results

The cumulative prevalence of gang membership was 8 %, while the dynamic age-graded prevalence of gang membership peaked at 3 % at age 15. Six distinct trajectories accounted for variability in the patterning of gang membership, including an adult onset trajectory. Gang membership in adulthood was an even mix of adolescence carryover and adult initiation. The typical gang career lasts 2 years or less, although much longer for an appreciable subset of respondents. Gender and racial/ethnic disproportionalities in gang membership increase in magnitude over the life-course.

Conclusions

Gang membership is strongly age-graded. The results of this study support a developmental research agenda to unpack the theoretical and empirical causes and consequences of gang membership across stages of the life-course.     

Gangs in the DRC and El Salvador: towards a third generation of gang violence interventions?

The phenomenon of gangs in El Salvador and the Democratic Republic of Congo (DRC) has already been researched, but a comparative study of gangs and gang policies is lacking. In this paper we discuss several gang violence prevention initiatives regarding the Mara Salvatrucha and Barrio 18 in El Salvador, and the kuluna and bashege in Kinshasa, DRC. In order to analyze the different gang interventions, we implement the typology of first and second gang violence prevention initiatives (Rodgers et al. 2009), and propose the evolution towards a third generation of gang violence prevention interventions. While first generation initiatives are security and law-enforcement driven, and second generation initiatives socio-preventive driven, third generation initiatives are more politically driven. The latter indicates a shift towards a vision of dialogue and negotiations to deal with gang violence. However, the different generations are not predefined within time and third generation initiatives can also be followed up by first generation initiatives, which was for example the case in the gang truce in El Salvador. Also, comparative gang research includes challenges, especially when the gang phenomenon in one country is better researched and documented than in other countries. As such, we were unable to identify politically-driven initiatives in the DRC to compare with the ones in El Salvador. Further research is thus required. With this paper we not only aim to contribute to the literature on gang violence prevention and reduction initiatives, we also want to push researchers, practitioners and policymakers to look beyond the borders when setting up gang (violence) prevention and rehabilitation projects, and to learn from other regions where similar initiatives have been implemented to deal with comparable issues of gang violence.     

Gender differences in gang participation,delinquency, and substance use

The purpose of this paper is to respond to gaps in our knowledge about patterns of female gang participation and its causes and consequences. Data from the Rochester Youth Development Study, a panel study that overrepresents adolescents at high risk for delinquency, are used to compare gang participation and delinquent involvement of female and male adolescents. We then examine the role of theoretical variables associated with both female and male gang membership. The results lead us to conclude that, for females as well as males, involvement in gangs is associated with substantially increased levels of delinquency and substance use. There is also some similarity in the factors associated with gang membership for both sexes, although lack of school success emerges as a factor of particular salience for female adolescents. The results suggest that theory and intervention need to address the phenomenon of female gang membership as an important component of urban youth problems.Authors' names are listed in alphabetical order.     

Sustainability of the effects of multisystemic therapy for juvenile delinquents in The Netherlands: effects on delinquency and recidivism

Objectives

The present study focused on the sustainability of the effects of Multisystemic Therapy (MST) on delinquency and recidivism.

Methods

A sample of 256 juveniles with severe and persistent antisocial behavior were randomly assigned to MST (147) and Treatment As Usual (TAU) (109) condition. Pre-test assessment took place before the start of MST/control group treatment. Post-test assessment took place at 6 months after termination of the program. Delinquency (parent and adolescent reported) was assessed 6 months after termination of the treatment. Official judicial data were collected to assess recidivism, with a mean length of follow-up of 3.06 years. ANCOVAs and survival analyses were used to test the effectiveness of MST.

Results

The multi-informant data showed that MST is effective in diminishing delinquent behavior as reported by adolescents and parents, with d’s larger than at post-test assessment immediately after ending of the intervention. The official judicial data, however, suggest that there are no differences between MST and TAU in recidivism. Few and inconsistent moderator effects were found.

Conclusions

According to parent and adolescent reports, the beneficial effects of MST were sustained at the follow-up. This was not supported by official data. These results stress the importance of using multi-informant data on delinquency, as each source of information has its own advantages and disadvantages.