Cardiac vagal control and children's adaptive functioning: a meta-analysis.

Area of Science:

• Psychology
• Neuroscience
• Child Development

Background:

• Polyvagal theory highlights cardiac vagal control's role in children's self-regulation.
• Respiratory sinus arrhythmia withdrawal (RSA-W) measures this control during stress.
• Uncertainty exists regarding RSA-W's predictive power for adaptive functioning (AF) and measurement caveats.

Purpose of the Study:

• To meta-analyze the predictive validity of RSA-W for children's adaptive functioning.
• To examine how measurement factors, like respiration, influence RSA-W associations.
• To investigate differences in RSA-W across diverse child samples.

Main Methods:

• Conducted a meta-analysis of 44 studies involving 4996 children.
• Analyzed associations between RSA-W and externalizing, internalizing, cognitive/academic, and social problems.
• Examined moderating effects of sample type, ethnicity, and measurement considerations (e.g., co-varying baseline RSA).

Main Results:

• Greater RSA-W was associated with fewer externalizing, internalizing, and cognitive/academic problems (small effect sizes).
• RSA-W's relation to social problems varied by sample type (community vs. clinical/at-risk).
• Associations were stronger in studies controlling for baseline RSA and in Caucasian children; respiration was not significant.

Conclusions:

• RSA-W shows a modest but consistent link to better child functioning across multiple domains.
• Measurement quality, specifically accounting for baseline RSA, enhances predictive validity.
• Clinical and at-risk samples exhibit diminished cardiac vagal control, suggesting potential intervention targets.