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Title: Biosocial Bases of Reactive and Proactive Aggression: the Roles of Community Violence Exposure and Heart Rate
Author(s): A. Scarpa, A. Tanaka and S.C. Haden
Journal: Journal of Community Psychology
Year: 2008
Volume: 36
Issue: 8
Pages: 969--988
Publisher address: Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA Long Isl Univ, Brookville, NY USA
ISSN: 0090-4392
File URL: vuams-pubs/Scarpa_2008.pdf
Keywords: AGE 11 YEARS, Aggression, ANTISOCIAL-BEHAVIOR, AUTONOMIC AROUSAL, Child, CHILDHOOD, CHILDREN, CRIMINAL BEHAVIOR, Heart, Heart Rate, HEART-RATE, HIGH-RISK, Parents, PROTECTIVE FACTORS, RATE-VARIABILITY, STIMULATION-SEEKING, Time, VAGAL TONE, VARIABILITIES, VARIABILITY, YOUNG-ADULT SAMPLE
Abstract: In order to more fully understand how individual differences influence adaptation to violence, this study examined the moderating influence of resting heart rate (HR) and HR variability (HRV) between community violence (CV) exposure and child reactive/proactive aggression. Forty 7-13-year-old community children self-reported CV exposure (i.e., victimization, witnessing, or hearing about violence) and were assessed for resting HR and HRV, Parents rated them on reactive/proactive aggression. CV victimization was positively related to proactive aggression only in conditions of low HR, and witnessed CV was positively related to reactive aggression only in conditions of high HRV. Main effects were not found for CV exposure or psychophysiological functioning, suggesting the importance of their interaction. Findings are discussed in terms of HR under-arousal, emotion dysregulation, fearlessness, and behavioral disinhibition as components that can increase aggression in response to violent contexts. Findings support a biosocial basis for childhood aggression and have implications for prevention and treatment. (C) 2008 Wiley Periodicals, Inc

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