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Perinatal factors, parenting behavior, and reactive aggression: does cortisol reactivity mediate this developmental
Stacy R Ryan1, Julia C Schechter, Patricia A Brennan
1Department of Psychology, Emory University, Atlanta, GA, USA. sryan@uams.edu
Journal of Abnormal Child Psychology
|May 31, 2012
Summary
Perinatal risk factors, indicated by minor physical anomalies (MPAs), interact with parenting to predict aggressive behavior in children. Cortisol reactivity did not mediate this link, but parenting quality moderated the impact of MPAs.
Area of Science:
- Developmental Psychology
- Behavioral Neuroscience
- Child Psychiatry
Background:
- Mechanisms linking perinatal risk to aggressive behavior remain unclear.
- Understanding the interplay between prenatal factors and environmental influences is crucial for developmental trajectories.
Purpose of the Study:
- To investigate the interaction between perinatal risk (minor physical anomalies) and parenting in predicting reactive and general aggression.
- To examine cortisol reactivity as a potential mediator in this developmental process.
Main Methods:
- Community sample of 99 elementary school-aged children.
- Prenatal risk assessed via minor physical anomalies (MPAs).
- Reactive aggression measured through laboratory observations; general aggression via parent report.
- Cortisol reactivity assessed as a potential mediator.
Main Results:
- Cortisol reactivity did not mediate the relationship between MPAs and aggression.
- MPAs interacted with parenting quality to predict both reactive and general aggression.
- Poorer parenting exacerbated the association between MPAs and aggressive outcomes.
- MPAs were associated with higher cortisol reactivity under conditions of poor parenting.
Conclusions:
- Parenting quality significantly moderates the impact of perinatal risk on child aggression.
- Interventions targeting parenting may mitigate the effects of perinatal risk factors on aggressive behavior development.
- Future research should explore other mediating pathways beyond cortisol reactivity.
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