Lisa M. Sontag

Stress is known to amplify the link between pubertal timing and psychopathology. However, few studies have examined the role of peer stress as a context for this link. The present study examined the interaction between perceived pubertal timing and peer stress on symptoms of psychopathology in early adolescence. The sample consisted of 264 students (63% female; M _age = 12.40, SD = 1.00; 55% Caucasian, 23% African American, 7% Latino, 11% biracial and 4% other). Higher peer stress was associated with symptoms of anxiety/depression; this effect did not vary by timing or gender. However, early-maturing girls with high peer stress demonstrated higher rates of relational and overt aggression compared to other girls. Findings also suggested that late-maturing boys with high stress are at risk for aggression problems; however, due to the small number of boys, analyses were exploratory. Overall, results suggest that developmentally salient contexts as indicated by stressful peer experiences may pose unique threats to early maturing girls and possibly late-maturing boys.

To date, relatively little is known about differences between perpetrators and victims of cyber and traditional forms of aggression. Hence, this study investigated differences among traditional and cyber aggressors and victims on psychosocial characteristics typically examined in research on traditional aggression and victimization, specifically effortful control, manipulativeness, remorselessness, proactive and reactive aggression, and anxious/depressive symptoms. Participants (N = 300; 63.2% female; M age = 12.89, SD = .95; 52% Caucasian, 27% African American, 11% Latino, and 10% other) were categorized based on aggressor type (non/low aggressor, traditional-only, cyber-only, and combined traditional and cyber) and victim type (non-victim, traditional-only, cyber-only, and combined traditional and cyber). Cyber aggressors reported lower levels of reactive aggression compared to traditional-only and combined aggressors. Combined aggressors demonstrated the poorest psychosocial profile compared to all other aggressor groups. For victimization, cyber-only and combined victims reported higher levels of reactive aggression and were more likely to be cyber aggressors themselves compared to traditional-only victims and non-victims. Findings suggest that there may be unique aspects about cyber aggression and victimization that warrant further investigation.

This study investigated gender differences in the moderating and mediating effects of responses to stress on the association between perceived peer stress and symptoms of psychopathology. A sample of 295 middle school students (63.7% female; M(age) = 12.39 years, SD = 0.99) completed self-report surveys on stress, coping, and behavioral problems. Involuntary responses to stress (e.g., physiological arousal, intrusive thoughts, impulsive action) mediated the association between perceived stress and anxiety/depression and aggression for girls and for boys. Disengagement coping (e.g., denial, avoidance) partially mediated the association between peer stress and anxiety/depression for boys and for girls. In contrast, disengagement coping mediated the association between peer stress and overt aggression for boys only. Finally, engagement coping (e.g., problem solving, emotion regulation, cognitive restructuring) buffered the indirect effect of peer stress on symptoms of psychopathology for girls only. Implications for prevention and intervention efforts are discussed.