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Physiological and behavioral regulation in two-year-old children with aggressive/destructive behavior problems
1Department of Psychology, University of North Carolina at Greensboro, 27402-6164, USA.
Insights
Children with externalizing problems show poorer physiological regulation, evidenced by lower respiratory sinus arrhythmia (RSA) suppression during challenging tasks. This indicates difficulties in emotional and behavioral regulation, impacting adaptive behavior development.
Area of Science:
- Developmental Psychology
- Child Psychiatry
- Behavioral Neuroscience
Background:
- Externalizing problems in young children are associated with regulatory deficits.
- Understanding the interplay between physiological and emotional regulation is crucial for early intervention.
Purpose of the Study:
- To investigate physiological and emotional regulation differences between high-risk and low-risk children for externalizing problems.
- To examine the relationship between physiological measures and behavioral/emotional regulation.
Main Methods:
- Recruited 99 two-year-olds based on Child Behavior Checklist scores (high-risk vs. low-risk for externalizing problems).
- Assessed physiological regulation via heart rate and respiratory sinus arrhythmia (RSA) during challenging laboratory tasks.
- Measured emotional regulation through observed affect and on-task/off-task behaviors.
Main Results:
- High-risk children exhibited significantly lower RSA suppression, indicating poorer physiological regulation during challenges.
- High-risk children displayed more negative affect and dysregulated emotion behaviors compared to low-risk children.
- Boys showed lower heart rate than girls; resting RSA differed between high-risk and low-risk boys.
Conclusions:
- Poorer physiological regulation, specifically reduced RSA suppression, is linked to externalizing problems in young children.
- These findings highlight the importance of integrated emotional and physiological regulation in adaptive behavior development.
- Early identification of regulatory deficits may inform interventions for children at risk for maladaptive behaviors.
Abstract:
A sample of 99 two-year-old children was selected on the basis of parents' responses to two administrations of the Child Behavior Checklist for two- to three-year-olds. Forty-nine of these children displayed symptoms of aggressive/destructive (externalizing) problems that were in the borderline clinical range (labelled "high risk") and 50 children displayed few such symptoms ("low risk"). The children were assessed in a series of laboratory procedures that were intended to be emotionally and behaviorally challenging, during which time heart rate was recorded and behavior was observed. To assess physiological regulation, resting measures of heart period and respiratory sinus arrhythmia (RSA), and heart period change and RSA suppression were derived from these procedures. To assess emotional and behavioral regulation, children's affect and on-task versus types of off-task behaviors were measured. Results indicated that children in the high-risk group did not differ from children in the low-risk group on the resting measure of heart period. Boys displayed lower heart rate than did girls, regardless of risk group. However, boys in the low-risk group differed from boys in the high-risk group in terms of resting measures of RSA. Children in the high-risk group did display significantly and consistently lower RSA suppression (physiological regulation) during the challenging situations than did the children in the low-risk group. High-risk children displayed more negative affect and dysregulated emotion regulation behaviors than did the low risk children. These findings are discussed in terms of the development of behavioral and emotional regulation that underlie adaptive versus maladaptive behavior.