ERIC Number: EJ826530
Record Type: Journal
Publication Date: 2009-Feb
Abstractor: As Provided
Reference Count: 0
Hypothalamic Pituitary Adrenal Axis Functioning in Reactive and Proactive Aggression in Children
Lopez-Duran, Nestor L.; Olson, Sheryl L.; Hajal, Nastassia J.; Felt, Barbara T.; Vazquez, Delia M.
Journal of Abnormal Child Psychology, v37 n2 p169-182 Feb 2009
The purpose of this study was to examine the association between hypothalamic-pituitary-adrenal axis (HPA-axis) reactivity and proactive and reactive aggression in pre-pubertal children. After a 30-min controlled base line period, 73 7-year-old children (40 males and 33 females) were randomly assigned to one of two experimental tasks designed to elicit fear (N = 33) or frustration (N = 32), or a validity check condition (N = 8). This was followed by a 60-min controlled regulation phase. A total of 17 saliva samples for cortisol analysis were collected including 12 post-stress samples at 5-min intervals. Reactive and proactive aggression levels were assessed via the teacher-completed Aggression Behavior Teacher Checklist (Dodge and Coie, J Pers Soc Psychol, 53(6), 1146-1158, "1987"). Reactive aggression significantly predicted total and peak post-stress cortisol regardless of stress modality. Proactive aggression was not a predictor of any cortisol index. Examination of pure reactive, proactive, combined, or non-aggressive children indicated that reactive aggressive children had higher cortisol reactivity than proactive and non-aggressive children. Our data suggest that while an overactive HPA-axis response to stress is associated with reactive aggression, stress induced HPA-axis variability does not seem to be related to proactive aggression.
Descriptors: Intervals, Aggression, Brain, Child Behavior, Young Children, Fear, Psychological Patterns, Stress Variables, Predictor Variables, Responses, Metabolism, Correlation, Check Lists
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Authoring Institution: N/A