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Although firearm violence is universally recognized as a paramount public health problem in the United States, for nearly two decades a Congressional budget amendment prevented federal agencies from funding research aimed at understanding the antecedents and consequences of gun violence. Although these restrictions have been lifted in recent years, the field is struggling to overcome a considerable lapse in developmentally-informed longitudinal research on adolescent gun involvement. Some key areas in need of further investigation include: (a) examining developmental and gender differences in risk factors for adolescent gun carrying, (b) clarifying the mechanisms through which socio-economic disadvantage confers risk for engaging in adolescent gun violence, (c) identifying proximal risk and protective factors that are associated with engagement in adolescent gun violence among high risk youth, and (d) delineating the unique effect the exposure to gun violence has on adolescents’ emotional and behavioral problems. This special section was organized in an attempt to revitalize research on these issues using a diverse array of longitudinal data sets consisting of both epidemiological and juvenile justice samples. Collectively, the findings from these studies are based upon repeated assessments conducted from childhood through early adulthood, making this set of papers uniquely positioned to advance our understanding adolescent gun involvement from a developmental perspective.

OBJECTIVE: We examined whether childhood socioeconomic disadvantage was associated with adolescent gun violence, and whether early symptoms of conduct disorder and/or exposure to delinquent peers accounted for the linkage. METHOD: Participants were 503 predominately Black and White boys who were recruited in first grade from Pittsburgh public schools. Multi-informant assessments were conducted regularly from age ~7 to ~20. A latent socioeconomic disadvantage factor was estimated with census-tract and parent-reported data when boys were ~7.5. Latent growth curve models assessed parent/teacher-reported conduct problems and youth-reported peer delinquency from age ~7.5 to ~10. The outcome was youth-reported engagement in gun violence by about age 20. We also controlled for race. Analyses examined whether the association between childhood socioeconomic disadvantage and adolescent gun violence was mediated through early conduct problems and/or increased exposure to delinquent peers. RESULTS: Childhood socioeconomic disadvantage was associated with adolescent gun violence, and some of this effect was mediated through peer delinquency and conduct problems. Specifically, childhood socioeconomic disadvantage was associated with greater affiliation with delinquent peers in early childhood, and early peer delinquency promoted a greater increase in conduct problems across childhood, and these conduct problems, in turn, led to an increased risk for adolescent gun violence. CONCLUSION: This study found that early socioeconomic disadvantage was directly and indirectly related to adolescent gun violence. Results suggest that interventions that aim to reduce conduct problems and deviant peer group affiliation in childhood might be important windows of opportunity for reducing gun violence in impoverished neighborhoods.

Among girls, little is known about the shared and unique associations that callous-unemotional (CU) behaviors and conduct problems have with aspects of emotional and behavioral dysregulation and with parenting practices. This study examined these associations using a large community-based sample of young girls (N = 990). The findings revealed that hyperactivity-impulsivity and negative emotionality were positively and uniquely associated with conduct problems, but not with CU behaviors, after controlling for co-occurring conduct problems. Conduct problems were also positively associated with both generalized anxiety and panic/somatic anxiety. In contrast, CU behaviors were negatively related to generalized anxiety problems after controlling for co-occurring conduct problems. The results also indicated that conduct problems were more closely associated with harsh punishment and low parental warmth among girls with low versus high CU behaviors.

Boys who exhibit interpersonal callousness (IC), hyperactivity/impulsivity (HI), inattention (IN), and conduct problems (CP) may be at risk for exhibiting persistent delinquent behavior. However, few studies have established the distinctiveness of these constructs or examined their relative contributions to the prediction of delinquent behavior across different developmental periods. This study explores these issues using boys from the youngest (1st grade, N = 849), middle (4th grade, N = 868), and oldest (7th grade, N = 856) cohorts of the Pittsburgh Youth Study. Confirmatory factor analysis indicates that the 4 constructs are related, yet independent, from childhood to adolescence. After controlling for the overlap among the constructs, CP significantly predicted delinquency persistence in the youngest cohort, whereas CP and IN predicted delinquency persistence in the middle cohort. IC uniquely predicted delinquency persistence for the oldest cohort. The results suggest that the saliency of specific predictors of delinquent behavior may change from childhood to adolescence.