Mara Brendgen

Reactively and proactively aggressive children: antecedent and subsequent characteristics

BACKGROUND Reactive and proactive subtypes of aggressive 10-11-12-year-old children were compared with non-aggressive children to examine whether the two forms of aggression were differentially related to antecedent and subsequent measures. METHOD A large community sample of boys and girls was used. Reactive and proactive aggression was measured through teacher ratings when the children were 10, 11 and 12 years old. Antecedent measures were age 6 temperament and behavioral dispositions; subsequent measures were age 13 delinquency and depressive symptoms. RESULTS Results indicated that reactive and proactive children had distinctive profiles on antecedent and subsequent measures. CONCLUSIONS We conclude that children characterized by reactive or proactive aggression differ on several dimensions of personal functioning, and that reactive and proactive aggression are distinct forms of aggression, although both co-occur in a large proportion of aggressive children.

Reactive and Proactive Aggression: Predictions to Physical Violence in Different Contexts and Moderating Effects of Parental Monitoring and Caregiving Behavior

This study aimed at (a) comparing the links of proactive and reactive aggression at 13 years of age to delinquency-related violence and dating violence at ages 16 and 17, and (b) examining the moderating effects of parental supervision, and mothers and fathers warmth and caregiving behaviors on these links. Based on a sample of 525 Caucasian boys, the results showed that proactive aggression uniquely predicted delinquency-related violence, whereas reactive aggression uniquely predicted later dating violence. The relation between proactive aggression and delinquency-related violence, however, was moderated by parental supervision. The relation between reactive aggression and dating violence was moderated by mothers warmth and caregiving behavior. The implications of the findings for the theoretical and practical distinction between proactive and reactive aggression are discussed.

Subtypes of aggressive behaviors: A developmental perspective

Aggressive behaviors in children and adolescents have undergone important conceptual and definitional modifications in the past two decades. In particular, subtypes of aggression have been proposed that separate the form and the function of the aggressive behaviors (i.e., social vs. physical aggression; reactive vs. proactive aggression). Moreover, new methodological tools have been developed to examine the developmental course of these subtypes, as well as their correlates. These conceptual and methodological innovations, in turn, have introduced new views of the development of aggressive behaviors. These “new views” contrast with more traditional perspectives about the evolution of aggressive behaviors from infancy to young adulthood, particularly with respect to the existence of individuals who begin to become aggressive by adolescence only. This article gives an overview of these definitional, conceptual, and methodological innovations. It also tries to reconcile different views about the development of aggressive behaviors from infancy through early adulthood. Theoretical and practical/clinical implications are also reviewed. The conclusion describes an integrative framework and identifies possible areas of research for the future.

Kindergarten Disruptive Behaviors, Protective Factors, and Educational Achievement by Early Adulthood.

This study examined whether 2 aspects of disruptive behaviors (i.e., hyperactivity-inattention and aggressiveness-opposition) observed in kindergarten predict noncompletion of high school by early adulthood. Also investigated was whether other personal characteristics such as anxiety or prosociality as well as parent child-rearing attitudes and teacher management style exert a compensatory or protective role with respect to these predictive links. A community sample of 4,330 children participated in this study. Results showed that hyperactivity-inattention made a stronger contribution to predicting noncompletion of high school than did aggressiveness-opposition. However, prosociality and 2 parental child-rearing aspects (i.e., pleasure and discipline) played a compensatory role in this process. Theoretical and preventive implications of these results are stressed in the discussion.

A longitudinal-experimental approach to testing theories of antisocial behavior development.

A longitudinal study with a nested preventive intervention was used to test five hypotheses generated from developmental theories of antisocial behavior. The longitudinal study followed 909 boys from their kindergarten year up to 17 years of age. The randomized multimodal preventive intervention targeted a subsample of boys who were rated disruptive by their kindergarten teacher. Semiparametric analyses of developmental trajectories for self-reported physical aggression, vandalism, and theft identified more types of trajectories than expected from recent theoretical models. Also, these trajectories did not confirm theoretical models, which suggest a general increase of antisocial behavior during adolescence. The majority of boys were on either a low-level antisocial behavior trajectory or a declining trajectory. Less than 6% appeared to follow a trajectory of chronic antisocial behavior. Comparisons between disruptive and nondisruptive kindergarten boys confirmed the hypothesis that disruptive preschool children are at higher risk of following trajectories of frequent antisocial behavior. Comparisons between treated and untreated disruptive boys confirmed that an intensive preventive intervention between 7 and 9 years of age, which included parent training and social skills training, could change the long-term developmental trajectories of physical aggression, vandalism, and theft for disruptive kindergarten boys in low socioeconomic areas. The results suggest that trajectories of violent behavior can be deflected by interventions that do not specifically target the physiological deficits that are often hypothesized to be a causal factor. The value of longitudinal-experimental studies from early childhood onward is discussed.

Peer Victimization, Poor Academic Achievement, and the Link between Childhood Externalizing and Internalizing Problems.

This study explored whether early elementary school aged childrens externalizing problems impede academic functioning and foster negative social experiences such as peer victimization, thereby making these children vulnerable for developing internalizing problems and possibly increasing their externalizing problems. It also explored whether early internalizing problems contributed to an increase in externalizing problems. The study examined 1,558 Canadian children from ages 6 to 8years. Externalizing and internalizing problems, peer victimization, and school achievement were assessed annually. Externalizing problems lead to academic underachievement and experiences of peer victimization. Academic underachievement and peer victimization, in turn, predicted increases in internalizing problems and in externalizing problems. These pathways applied equally to boys and girls. No links from internalizing to externalizing problems were found.

Trajectories of gambling during adolescence.

This study aimed at empirically identifying groups of adolescents with distinct longitudinal trajectories of gambling involvement and validating these groups by comparing them with respect to correlates. 903 low SES boys were followed annually from age 11 to 16 years. Three groups were found: an early-onset high-level chronic group, a late-onset high-level group, and a low gambler group. The Chronic group and the Low group consistently differed on teacher-rated inhibition (i.e., anxiety) during childhood and early adolescence. They also differed on concurrent teacher and self ratings of disinhibition (i.e., impulsivity), while the Late Onset group appeared to lie in between these groups. Compared to the Low group, both high groups subsequently had elevated scores on later gambling related problems.

Parent and Peer Effects on Delinquency‐related Violence and Dating Violence: A Test of Two Mediational Models

Drawing on two complementary process models of violence, i.e., social cognitive theory and rejection sensitivity theory, the goal of the present study was (1) to examine the unique effects of parents and peers on boys’ violent behavior in delinquency-related contexts and in dating relationships, (2) to assess the mediating processes underlying these links, and (3) to test whether these processes operate in the same way for delinquency-related violence and dating violence. Based on a sample of 336 boys, results showed that problematic experiences with parents and with peers each predicted subsequent violence, both in delinquency-related and in dating-related contexts. However, the contributions of the social cognitive model and the rejection sensitivity model in explaining these links varied somewhat depending on the situational context of the violent behavior. The implications of the similarities and specificities in the risk factors and pathways leading to delinquency-related violence and dating violence are discussed.

Examining genetic and environmental effects on reactive versus proactive aggression

This study compared the contribution of genes and environment to teacher-rated reactive and proactive aggression in 6-year-old twin pairs (172 pairs: 55 monozygotic girls, 48 monozygotic boys, 33 dizygotic girls, 36 dizygotic boys). Genetic effects accounted for 39% of the variance of reactive aggression and for 41% of the variance of proactive aggression. The remainder of the variance was explained by unique environmental effects. Genetic as well as unique environmental effects were significantly correlated across reactive and proactive aggression (genetic correlation = .87, environmental correlation = .34), but this overlap was largely due to a common underlying form of aggression (i.e., teacher-rated physical aggression). Once common etiological factors due to physical aggression were accounted for, reactive and proactive aggression shared no other genes and only a few environmental influences, although additional specific genetic and environmental effects were observed for both reactive and proactive aggression. These specific effects indicate that both reactive and proactive aggression may be influenced mostly by socialization experiences that are specific to each type of aggression and only to a very small degree by specific genes.

Preventive intervention: Assessing its effects on the trajectories of delinquency and testing for mediational processes.

This study assessed the impact of a prevention program on the growth of delinquency from 13 to 16 years of age and examined whether its impact operated through a chain of events compatible with many developmental models. The multicomponent prevention program targeted disruptive, low socioeconomic status boys when they were aged 7 through 9 years. A growth-curve analysis showed that the level of delinquency for the prevention group was lower at 13 years (i.e., the intercept) than in the control group. There was, however, no direct effect of the program on the growth (i.e., the slope) of delinquency from 13 through 16 years of age. Path analysis showed that reduction in disruptiveness and increase in parental supervision by age 11, as well as association with nondeviant peers by age 12, were part of a chain of events that was found to mediate the effect of the program on the initial level of delinquency at 13 years. The analysis also showed that the program had an indirect effect through these variables on the growth of delinquency from 13 to 16 years of age. The discussion focuses on the possibility of using prevention studies to validate developmental models.