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Published on: April 29, 2013
Cardiac vagal tone indices of temperamental reactivity and behavioral regulation in young children
1Department of Psychology, University of North Carolina at Greensboro 27412, USA.
Insights
Children
Area of Science:
- Developmental Psychology
- Psychophysiology
- Child Development
Background:
- Vagal tone (Vna) is a key indicator of physiological regulation.
- Temperamental reactivity and behavioral regulation are crucial for social development.
- Understanding the interplay between vagal tone and these regulatory behaviors is important.
Purpose of the Study:
- To investigate the relationship between baseline vagal tone and vagal suppression.
- To examine how vagal tone dimensions relate to temperamental reactivity.
- To explore the connection between vagal suppression and behavioral regulation strategies.
Main Methods:
- Forty-one children participated in affect-eliciting episodes.
- Heart rate was recorded during baseline and affect tasks.
- Measures of vagal tone and behavioral regulation were computed.
Main Results:
- Vagal tone decreased from baseline to affect tasks for all children.
- Higher baseline vagal tone was associated with greater vagal suppression.
- Baseline vagal tone related to reactivity in positive/negative, but not delay tasks.
- Vagal suppression correlated with specific behavioral regulation strategies.
Conclusions:
- Vagal tone plays a role in modulating temperamental reactivity.
- Vagal suppression is linked to the development of adaptive behavioral regulation.
- Physiological regulation, indicated by vagal tone, is vital for social development.
Abstract:
The relation between two dimensions of vagal tone (Vna), indexed by a baseline measure of Vna and suppression of Vna and temperamental reactivity and behavioral regulation was investigated. Forty-one children were observed during a series of episodes designed to elicit temperamental reactivity and behavioral regulation. Heart rate was recorded during these baseline, positive, negative, and delay episodes, from which measures of vagal tone were computed. Across the entire sample, vagal tone decreased from the baseline episode to the three affect tasks. Baseline measures of vagal tone were related to the tendency to show a decrease in vagal tone: Children who consistently suppressed vagal tone (showed a decrease to all the affect tasks) had higher baseline vagal tone. Baseline vagal tone was related to temperamental reactivity for the positive and negative tasks, but not the delay tasks. Vagal suppression (vagal difference score) was related to several of the behavioral regulation strategies used by the children in the affect-eliciting situations. These findings are discussed in terms of the adaptive value of physiological regulation in the development of regulatory behaviors that may be critical to social development.
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