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Pulling together the most salient, current issues in the field today, The Handbook of Gangs provides a significant assessment by leading scholars of key topics related to gangs, gang members, and responses to gangs.

Gangs are multifaceted and varied, so any attempt to understand them cannot be restricted to a singular approach.On Gangs provides a diverse and comprehensive survey of the available theories for understanding this social issue as well as the broad range of responses to it.

There is considerable speculation that prisons are a breeding ground for radicalization. These concerns take on added significance in the era of mass incarceration in the United States, where 1.5 million people are held in state or federal prisons and around 600,000 people are released from prison annually. Prior research relies primarily on the speculation of prison officials, media representations, and/or cross-sectional designs to understand the imprisonment-extremism nexus. We develop a tripartite theoretical model to examine continuity and change in activism and radicalism intentions upon leaving prison. We test these models using data from a large probability sample of prisoners ( N = 802) in Texas interviewed in the week preceding their release from prison and then reinterviewed 10 months later using a validated scale of activism and radicalism intentions. We arrive at three primary conclusions. First, levels of activism decline upon reentry to the community ( d = -0.30, p < .01), while levels of radicalism largely remain unchanged ( d = -0.08, p = .28). What is learned and practiced in prison appears to quickly lose its vitality on the street. Second, salient groups and organizations fell in importance after leaving prison, including country, race/ethnicity, and religion, suggesting former prisoners are occupied by other endeavors. Finally, while we identify few correlates of changes in extremist intentions, higher levels of legal cynicism in prison were associated with increases in both activism and radicalism intentions after release from prison. Efforts designed to improve legal orientations could lessen intentions to support non-violent and violent extremist actions. These results point to an imprisonment-extremism nexus that is diminished largely by the realities of prisoner reentry.

Prisons have been described as the final frontier for research on gangs and gang members. Criminological research in prisons is rare due to restricted access to facilities, concerns about harsh public scrutiny, and worries about security. There are added challenges for survey research involving prison gang members, as it is believed that gang norms inhibit reliable and valid responses and discourage participation in research. This article introduces the Study of Trajectories, Associations, and Reentry—the LoneStar Project—which involved interview-based surveys with 802 prison inmates in Texas, over 45% of whom were officially classified as gang members. We assess the prospect for conducting interview-based survey research with gang members in prison. We detail the planning and implementation phases of this study, assess whether gang members can be surveyed in prisons with fidelity, report descriptive statistics on gang and non-gang members, and identify five key operational lessons from this study. Our results revealed that gang members would not only participate in research, but that the methodological characteristics of their survey responses were indistinguishable statistically and substantively from those of non-gang prison inmates. We also determined that strong researcher-practitioner relationships, a nimble yet consistent research team, and a heavy emphasis on rapport building allowed this project to be carried out with few disruptions in a prison environment. These results are promising for future research in prisons, especially with gang members.

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.

BackgroundOver the past decade there have been numerous and impassioned calls to reform the practice of solitary confinement in U.S. prisons. This article examines the development, implementation, and processes of a restrictive housing reentry program in the Oregon Department of Corrections. It draws on data from official documents, site observations, and interviews with 12 prison officials and 38 prisoners. The Step Up Program (SUP) seeks to improve the living conditions in restrictive housing over business-as-usual, alleviate physiological and psychological harms of solitary confinement, and use rehabilitative programming to increase success upon returning to the general prison population or community.ResultsThe impetus to change the culture and structure of restrictive housing was primarily the result of internal administrative reform. Prisoners assigned at random to housing assignments offered accounts of their daily activities suggesting that the SUP provides more time out-of-cell and greater access to other services and activities. Program participants preferred the living conditions in the SUP because they had more opportunities for social interaction and incentives for compliant behavior. However, views on the value of programming among respondents were mixed.ConclusionsThe launch of the SUP occurred in early 2020, which was soon followed by the COVID-19 pandemic. As a result, the program was never fully implemented as intended. As Oregon returns to more normal operations, it is possible that the SUP will be able to include even more out-of-cell time, greater socialization opportunities, and increased access to programming and other beneficial activities. As we await the opportunity to conduct prospective psychological and behavioral analyses, this study provides tentative support for the use of step down reentry programs in restrictive housing units.Trial registrationOpen Science Framework, Preparing adults in custody for successful reentry: An experimental study of a restrictive housing exit program in Oregon. Registered 4 October 2019, https://osf.io/t6qpx/

Objectives Longitudinal data offer many advantages to criminological research yet suffer from attrition, namely in the form of sample selection bias. Attrition may undermine reaching valid inferences by introducing systematic differences between the retained and attrited samples. We explored (1) if attrition biases correlates of recidivism, (2) the magnitude of bias, and (3) how well methods of correction account for such bias. Methods Using data from the LoneStar Project, a representative longitudinal sample of reentering men in Texas, we examined correlates of recidivism using official measures of recidivism under four sample conditions: full sample, listwise deleted sample, multiply imputed sample, and two-stage corrected sample. We compare and contrast the results regressing rearrest on a range of covariates derived from a pre-release baseline interview across the four sample conditions. Results Attrition bias was present in 44% of variables and null hypothesis significance tests differed for the correlates of recidivism in the full and retained samples. The bias was substantial, altering effect sizes for recidivism by a factor as large as 1.6. Neither the Heckman correction nor multiple imputation adequately corrected for bias. Instead, results from listwise deletion most closely mirrored the results of the full sample with 89% concordance. Conclusions It is vital that researchers examine attrition-based selection bias and recognize the implications it has on their data when generating evidence of theoretical, policy, or practical significance. We outline best practices for examining the magnitude of attrition and analyzing longitudinal data affected by sample selection.

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.

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.

Firearm violence in the United States is highly concentrated within specific demographic, economic, geographic, and social population groups. Prior research indicates elevated violence exposure among gang-involved individuals, but the extent and mental health implications of firearm victimization at the national level remain poorly understood. We analyzed data from a national online survey of 10,000 U.S. adults fielded in 2024. Respondents self-reported lifetime gang membership and lifetime exposure to five forms of firearm victimization: presence at a mass shooting, gun threats, being shot at without injury, accidental gunshot injury, and intentional gunshot injury. Weighted descriptive statistics compared prevalence by lifetime gang status. Multivariable logistic regression estimated adjusted odds ratios controlling for several covariates. Among victims of firearm violence, self-reported psychological impacts, including anxiety, fear, depression, panic attacks, and post-traumatic stress symptoms, were assessed. People with a history of gang involvement reported substantially higher lifetime exposure to all forms of firearm victimization. After adjustment, gang involvement was associated with 2-4 times greater odds of firearm exposure across outcomes. Psychological impacts following firearm victimization were prevalent in both gang and non-gang groups. Differences in reported mental health impacts by gang status were generally modest, with relatively few statistically significant differences in adjusted models. Firearm victimization is highly concentrated among people with a history of gang involvement, and such exposure is associated with substantial psychological distress. Mental health impacts were broadly similar across gang-involved and non-gang victims. These findings highlight the importance of recognizing gang-involved adults as a population with disproportionate exposure to firearm violence and significant trauma-related needs within a public health framework.