Dynamic measures of respiratory sinus arrhythmia uniquely predicted high-fear toddlers' displays of shyness during a fear-eliciting episode compared to traditional static change scores.
Observational (n=88)
Do dynamic measures of RSA predict emotion and affective behaviors better than static measures in toddlers?
Dynamic measures of RSA provide unique predictive value for emotional regulation behaviors in toddlers compared to traditional static measures.
In this study, we examined a new method for quantifying individual variability using dynamic measures of respiratory sinus arrhythmia (RSA). This method incorporated temporal variation into the measurement of RSA and provided information beyond that offered by more traditional quantifications such as difference scores. Dynamic and static measures of change in RSA were tested in relation to displays of emotion and affective behaviors during a fear-eliciting episode in a sample of 88 typically developing and high-fear toddlers during a laboratory visit at age 24 months. Dynamic measures of RSA contributed information that was unique from traditionally employed, static change scores in predicting high-fear toddlers' displays of shyness during a fear-eliciting episode. In contrast, RSA change scores offered information related to boldness in nonhigh-fear children. In addition, several associations included estimates of nonlinear change in RSA. Implications for the study of individual differences in RSA and relations with emotion and emotion regulation are discussed.
Brooker et al. (Fri,) conducted a observational in Typically developing and high-fear toddlers (n=88). Dynamic measures of respiratory sinus arrhythmia (RSA) vs. Static change scores was evaluated on Displays of emotion and affective behaviors during a fear-eliciting episode. Dynamic measures of respiratory sinus arrhythmia uniquely predicted high-fear toddlers' displays of shyness during a fear-eliciting episode compared to traditional static change scores.