From Classroom to Dyad: Actor and Partner Effects of Aggression and Victim Reputation

This study examined whether early adolescents’ classroom aggression predicted their aggression in a one‐on‐one dyadic setting, and whether early adolescents’ classroom victimization predicted their victimization in the dyadic setting. After completing peer nominations for aggression and victimization, 218 early adolescents (M age = 11.0 years) participated in a dyadic paradigm in which they were led to believe that they played against a same‐sex classmate for whom they could set the intensity of noise blasts. Analyses with the actor–partner interdependence model by Olsen and Kenny showed that peer‐nominated physical aggression for boys and relational aggression for girls predicted noise blast aggression in the dyadic setting. For girls but not boys, peer‐nominated victimization predicted victimization in the dyadic setting.     

Relations between close friendships and adolescent aggression: Structural and behavioral friendship features

Friendships have the potential to perpetuate or mitigate youth's aggressive behavior. We investigated concurrent and longitudinal effects of friendships on aggression by examining both structural (size and interconnectedness of the local friendship network) and behavioral (friends' aggression) friendship features. Participants were 868 sixth to eighth grade middle‐school students (M = 12.10 years; 49.9% girls; 44% Latina/o) who completed questionnaires at two time points. Participants nominated their friends; reciprocal friendship nominations were used to calculate structural friendship group features (size and interconnectedness). Peer nominations were also used to measure youth's and their friends' aggression. Having more reciprocal friends was associated with more aggression concurrently (particularly for youth whose friends were highly aggressive), and having an interconnected friendship group was associated with decreased aggression over time. Given that findings were different for group size and interconnectedness, we discuss the unique importance of each of these structural friendship features. Practical implications regarding the potential to decrease aggressive behavior based on specific friendship features are also discussed.     

Group Influences on Individual Aggression and Prosociality: Early Adolescents Who Change Peer Affiliations

The present study addresses the influence that group norms exert on individual aggressive and prosocial behavior. The study hypothesis is that for early adolescents who change their peer group affiliations, the characteristics of the group they are leaving (departing‐group influence) are not as influential as those of the group that they are joining (attracting‐group influence). From a larger sample of fifth and sixth graders who were followed over a one‐year period, 198 early adolescents were identified as those who changed peer group affiliations. Peer nominations on aggression, prosociality, social preference and popularity, and social network information were collected. Results confirmed that there were significant attracting‐ but not departing‐group influences on aggression and prosociality. Expected associations between aggression, prosocial behavior, and social status were confirmed. The discussion is framed around a social‐ecological perspective that emphasizes the short‐term adaptive nature of aggressive behavior in some peer groups and the need for considering social mobility when assessing group influence on individual behavior.     

Aggression in toddlerhood: The roles of parental beliefs,parenting behavior and precursors of theory of mind

Parental beliefs, parenting behavior, and precursors of theory of mind have been related uniquely to each other and to early aggression, but have not yet been studied simultaneously. The present study combined these risk factors in the prediction of aggression during toddlerhood using a sample of 152 mother–child dyads. At 20 months, mothers' parental beliefs (parental self‐efficacy and perceived parental impact) were examined with the Parental Cognitions and Conduct Toward the Infant Scale. Maternal parenting behavior (sensitivity, intrusiveness, and successful positive engagement) was observed during free play and teaching tasks, and children's precursors of theory of mind were assessed using a visual perspectives task and an imitation task. At 30 months, child aggression was examined using the Child Behavior Checklist. A regression analysis indicated that lower parental self‐efficacy and lower imitation skills predicted more aggressive behavior. When estimating the indirect effects using bootstrapping, a final model was found indicating that lower perceived parental impact was related to less successful positive engagement, which, in turn, was associated with children's poorer imitation abilities which predicted more aggressive behavior. It can be concluded that aggression during toddlerhood is predicted significantly by interrelated parental beliefs, parenting behavior, and children's early social cognitive abilities.     

Examining the Heterotypic Continuity of Aggression Using Teacher Reports: Results from a National Canadian Study

This study examined the heterotypic continuity of aggression hypothesis (physical to indirect) using independent teacher reports of aggression drawn from a nationally representative sample of 749 Canadian girls and boys. Confirmatory factor analysis using an accelerated longitudinal design confirmed a two-factor model of physical and indirect aggression that was stable across time, but not sex. Mean levels of indirect aggression were highest for girls whereas mean levels of physical aggression were highest for boys. Results of a series of path analyses indicated statistically significant cross-lagged effects that varied by sex. Physical aggression at Time 1 (T1; aged six to nine years) significantly predicted increased levels of indirect aggression at Time 2 (T2; girls only) and Time 3 (T3; boys and girls). Indirect aggression at T1 predicted decreased physical aggression at T2 (boys only) and at T3 (boys and girls). These results offer support for the heterotypic continuity of aggression and underscore the usefulness of teacher reports in studies of childhood aggression.     

Media Exposure, Aggression and Prosocial Behavior During Early Childhood: A Longitudinal Study

Preschool children (N = 78) enrolled in multi‐informant, multi‐method longitudinal study were participants in a study designed to investigate the role of media exposure (i.e., violent and educational) on concurrent and future aggressive and prosocial behavior. Specifically, the amount of media exposure and the nature of the content was used to predict concurrent and future physical, verbal and relational aggression as well as prosocial behavior for girls and boys. This two‐year longitudinal study found that media exposure predicted various subtypes of aggression and prosocial behavior. These findings are qualified by the gender of the focal child. That is, parental reports of media exposure were associated with relational aggression for girls and physical aggression for boys at school. Ways in which these findings extend our understanding of the role of media during early childhood are discussed.     

Top Ten Challenges for Understanding Gender and Aggression in Children: Why Can’t We All Just Get Along?

This essay identifies ten significant methodological challenges for understanding aggression and gender. In light of the recent explosion of research on indirect/relational/social aggression, it seems important to clarify gaps in our current understanding and to identify promising methods by which better answers might be found. The discussion begins with basic issues of definitions, contexts and subtypes, moves on to points concerning sampling and measures, and addresses whether current evidence warrants deciding that girls are as aggressive as boys. We conclude that although research has shown that the majority of girls' aggression takes indirect/relational/social forms, it is premature to conclude that boys do not also engage in these behaviors. We caution against assuming that physical and indirect/relational/social aggression are comparable in their developmental origins and consequences, and urge researchers to consider that fully understanding indirect/relational/social aggression might require different conceptual frameworks and research methods.     

Relations between Theory of Mind and Indirect and Physical Aggression in Kindergarten: Evidence of the Moderating Role of Prosocial Behaviors

The present study examined the association between theory of mind and indirect versus physical aggression, as well as the potential moderating role of prosocial behavior in this context. Participants were 399 twins and singletons drawn from two longitudinal studies in Canada. At five years of age, children completed a theory of mind task and a receptive vocabulary task. A year later, teachers evaluated children's indirect and physical aggression and prosocial behavior. Indirect aggression was significantly and positively associated with theory of mind skills, but only in children with average or low levels of prosocial behavior. Physical aggression was negatively associated with prosocial behavior but not with theory of mind. Each analysis included gender, receptive vocabulary, and the respective other subtype of aggression as control variables. These results did not differ between girls and boys or between twins and singletons. Theoretical and clinical implications of these findings are discussed.     

Empathy and Observed Anger and Aggression in Five-Year-Olds

In Roberts and Strayer (1996 ), we reported that emotional expressiveness and anger were important predictors of empathy for school‐age children, and that empathy strongly predicted prosocial behaviors aggregated across methods and sources. In this paper, we report how empathy was associated with direct observations of anger and aggression in peer play groups. Twenty‐four initially unacquainted five‐year‐old children (50% girls) were randomly assigned to six same‐sex groups; each group met for three one‐hour play sessions. Physical and verbal aggression, object struggles and anger were coded from videotapes, as were prosocial and social behaviors. As expected, empathy (aggregated across methods and sources) was negatively associated with aggression and anger, and positively associated with prosocial behaviors. Although children who were more angry were also more aggressive, anger and aggression did not covary across play sessions as a simple causal model requires. These results suggest further directions for research in emotions and aggression.     

Executive function and theory of mind as predictors of aggressive and prosocial behavior and peer acceptance in early childhood

Executive function (EF) and theory of mind (ToM) are related to children's social interactions, such as aggression and prosocial behavior, as well as their peer acceptance. However, limited research has examined different forms of aggression and the moderating role of gender. This study investigated links between EF, ToM, physical and relational aggression, prosocial behavior and peer acceptance and explored whether these relations are gender specific. Children (N = 106) between 46‐ and 80‐months‐old completed tasks assessing cool and hot EF and ToM. Teaching staff rated children's aggression, prosocial behavior, and peer acceptance. EF and ToM predicted physical, but not relational, aggression. Poor inhibition and delay of gratification were uniquely associated with greater physical aggression. EF and ToM did not predict prosocial behavior or peer acceptance. Added to this, gender did not moderate the relation between either EF or ToM and social outcomes. The correlates of aggression may therefore differ across forms of aggression but not between genders in early childhood.     

Maladaptive Peer Relationships and the Development of Relational and Physical Aggression During Middle Childhood

This study examined the unique roles of peer rejection and affiliation with aggressive peers in the development of relational and physical aggression in a sample of 979 2nd through 4th grade children. Information about target children and their best friends’ aggression and peer rejection was gathered via peer‐nominations when the majority of children were in the 3rd grade, and again approximately one year later. Friendships were identified by having target children nominate their three best friends in their classroom. Path analyses conducted with children who had at least one reciprocated friendship revealed that peer rejection and friends’ aggression predicted changes in target children's aggression; however, the patterns of relations varied by gender and form of aggression. Higher initial levels of rejection and friends’ relational aggression predicted increases in relational aggression among girls only, whereas rejection and friends’ physical aggression predicted increases in physical aggression among boys and girls. The significance of these results for the application of peer influence theories to relational aggression, and to females, is discussed.     

Aggressive Behaviors in Social Interaction and Developmental Adaptation: A Narrative Analysis of Interpersonal Conflicts During Early Adolescence

Using conflict narratives reported by adolescents in grade 7 (mean age = 13.4 years), this study investigated the interactional properties and developmental functions of four types of aggressive behaviors: social aggression, direct relational aggression, physical aggression, and verbal aggression. A total of 475 participants from the Carolina Longitudinal Study ( Cairns & Cairns, 1994 ) were included. Results showed that the majority of conflict interactions involved more than a dyad. The use of social aggression (e.g., concealed social attack) was associated with more individuals involved in the conflict. Social aggression was primarily reported as an initiating behavior for interpersonal conflicts, while direct relational aggression was a responding behavior. Medium to high levels of reciprocity were found for physical, verbal, and direct relational aggression, whereas a low level of reciprocity was reported for social aggression. School authorities were most likely to intervene in physical aggression. The use of social aggression was associated with higher network centrality among adolescents. Developmental maladjustment in late adolescence and early adulthood was primarily predicted by physical aggression.     

Anger Perception, Caregivers' Use of Physical Discipline, and Aggression in Children at Risk

We analyzed the relations between teacher reports of aggressive behaviors, caregiver reports of their use of physical discipline, anger perception accuracy, and anger perception bias in middle childhood and teacher reports of aggressive behaviors two years later in a sample of children from economically disadvantaged families (n =152). Fisher r‐to‐z analyses showed a gender difference in the relation between anger perception accuracy and aggressive behavior in third grade. For girls, anger perception accuracy was significantly negatively related to aggression, and for boys, there was no relation between anger perception accuracy and aggression. Hierarchical multiple regression analyses showed that third grade aggressive behavior, caregivers’ reports of their use of physical discipline, and anger perception bias were significantly positively related to teacher reports of aggressive behavior two years later after controlling for gender and anger perception accuracy.     

Links between friends’ behaviors and the emergence of leadership in childhood: A genetically informed study of twins

Using a genetically informed design, this study examined whether children's leadership behavior varied as a function of their reciprocal friends’ behavioral characteristics. Specifically, we tested (a) whether friends’ use of a dual strategy (specifically, indirect aggression with prosocial behavior) was associated with children's leadership behavior and (b) whether, in line with a gene‐environment interaction (GxE), the predictive association between friends’ behaviors and children's leadership behavior varied depending on the child's genetic likelihood for leadership. The sample comprised 239 Monozygotic and same‐sex Dizygotic twin pairs (50% boys) assessed in grade 4 (mean age = 10.4 years, SD = 0.26). Reciprocal friendship and children's and their friends’ prosocial, indirectly aggressive, and physically aggressive behaviors were measured via peer nominations. Children's and friends’ leadership was measured through teacher ratings. Multilevel regression analyses revealed that children's genetic likelihood for leadership was positively associated with their leadership behavior. Moreover, the higher their genetic likelihood for leadership, the more children displayed increased leadership behavior when friends showed a combination of indirect aggression and prosocial behavior (GxE). These results underline the role of friends’ behaviors in explaining children's leadership. Socializing with bistrategic friends seems to foster leadership skills especially in children with a genetic likelihood for leadership.     

Gender Differences in Preschool Aggression During Free Play and Structured Interactions: An Observational Study

We observed 48 children from rural preschools (M=64 months old) in two different social contexts to test hypotheses about the type (relational, physical, verbal, nonverbal), contextual independence, and sociometry of girls’ and boys’ aggressive tactics. We predicted and generally found that (1) girls displayed more relational aggression than boys while boys displayed more physical and verbal aggression than girls, and that children received more physical and verbal aggression from male peers, and tended to receive more relational aggression from female peers, (2) behavioral observations of aggression corresponded with teacher reports of children's aggressive styles, (3) aggression observed during free play predicted children's aggressive styles in a structured setting at both the group and individual levels, and (4) aggressive tactics were associated with projected sociometric characteristics (dominance and peer acceptance).     

Socialization of Physical and Social Aggression in Early Adolescents' Peer Groups: High‐status Peers,Individual Status,and Gender

The influence of high‐status peers on a target individual's physical and manipulative social aggression in peer groups was examined in a diverse sample of seventh‐grade students. A total of 245 individual members belonging to 65 groups were included in analyses. Aggression was assessed by peer and victim nominations in the fall and spring semesters of seventh grade. High‐status peers rather than low‐status peers in a group had a strong influence on individual members' physical and social aggression. High‐status peers were particularly influential on low‐status individual members' social aggression. A similar pattern was found for physical aggression in boys' groups. These findings imply that high‐status members' aggression rather than the average of all members' may better represent the group norm. Special attention needs to be given to high‐status aggressive adolescents in future intervention and prevention of aggression in schools.     

Relational and Overt Aggression in Childhood and Adolescence: Clarifying Mean‐level Gender Differences and Associations with Peer Acceptance

Research on relational aggression has drawn attention to how girls may be likely to aggress, but the role of gender is not fully understood. There are opposing views regarding whether relational aggression is most common among girls. Current findings demonstrate that when gender differences in relational aggression are assessed with peer nominations, gender differences favoring girls are more likely: (1) in adolescence than childhood; and (2) when statistical overlap with overt aggression is controlled. Results also indicated that associations of relational aggression with peer acceptance depend on the aggressor's gender, the peer rater's gender, and whether overlap with overt aggression is controlled. Associations of relational aggression with lower acceptance became non‐significant when overt aggression was controlled, suggesting that relational aggression displayed in isolation may not damage acceptance. In fact, in mid‐adolescence, girls’ relational aggression predicted greater liking by boys. Reducing relational aggression among adolescent girls may be especially challenging if the behavior is linked with acceptance by boys.     

A Strategic Approach to Aggression

Two issues raised by Underwood, Galen and Paquette (2001) are discussed in more detail. The distinction between indirect and relational forms of aggression is explored: although they coincide in many current studies, they involve potentially separate dimensions, so that social manipulation may occur face-to-face, and indirect aggression may not involve manipulating others. These forms of aggression are at the margins of the usual definitions of aggression, and may be better viewed as social strategies. The normative view of aggression inherent in the social information processing model is questioned from an evolutionary perspective, and in the light of research on bullying, which indicates that aggressive individuals may be socially skilled. This perspective coincides with the strategic approach arising from consideration of relational aggression.     

From Narcissistic Exploitativeness to Bullying Behavior: The Mediating Role of Approval‐of‐aggression Beliefs

This study examined the role of approval‐of‐aggression beliefs in the relationship between narcissistic exploitativeness and bullying behavior in an Asian sample (N = 809) comprising elementary children and middle school adolescents. Narcissistic exploitativeness was significantly and positively associated with both bullying behavior and approval‐of‐aggression beliefs, and approval‐of‐aggression beliefs was significantly and positively associated with bullying behavior. Additionally, findings indicated that approval‐of‐aggression beliefs was a statistically significant mediator and 53 percent of the total effect of narcissistic exploitativeness on bullying behavior was mediated by approval‐of‐aggression beliefs. Approval‐of‐aggression beliefs did not moderate the association between narcissistic exploitativeness and bullying behavior. There are important theoretical implications as well as implications for prevention and intervention efforts targeting aggressive, bullying behavior among children and adolescents.     

Prospective Associations between Peer Aggression and Victimization: The Moderating Roles of Physiological Stress Reactivity and Gender

The present investigation examined whether heightened skin conductance reactivity (SCLR) to peer stress strengthened the prospective associations between physical and relational aggression and victimization, and whether associations were stronger for physical forms of aggression and victimization among boys and relational forms of aggression and victimization among girls. A total of 91 children [M age = 10.18 years, standard deviation (SD) = .68] were assessed twice over 1 year. At the first assessment, SCLR in response to recounting a relational stressor (e.g., exclusion; SCLR‐R) and an instrumental stressor (e.g., property theft; SCLR‐I), and teacher‐reported aggression were measured. Parents reported on child victimization at both time points. Among youth with heightened SCLR‐I, physical aggression was associated with increases in physical victimization for boys and decreases in physical victimization for girls. Among youth with heightened SCLR‐R, relational aggression was associated with increases in physical victimization for girls only. Results were largely consistent with the hypothesis that aggressors with a propensity to exhibit negative displays of emotion, as indexed by heightened sympathetic nervous system (SNS) reactivity to peer stress, may be especially likely to suffer peer victimization. Gender‐specific effects highlight the importance of including both physical and relational forms of aggression and victimization to capture victimization risk among aggressive boys and girls.