Parent-adolescent physiological synchrony: Moderating effects of adolescent emotional insecurity.

The present study investigated physiological synchrony in the parasympathetic nervous system among fathers, mothers, and adolescents during a real-time family interaction, and child characteristics that may moderate the level of physiological synchrony. Our sample consisted of 191 families with adolescents (Mage  = 12.4 years) and both of their parents, who participated in a triadic family conflict discussion. During the discussion, respiratory sinus arrhythmia (RSA) was measured for all three family members. Multilevel analysis indicated a significant positive concurrent synchrony between adolescents and their mothers, as well as between fathers and mothers on a minute-to-minute basis. No RSA synchrony was found between adolescents and their fathers. Furthermore, adolescent emotional insecurity significantly moderated mother-adolescent RSA synchrony. Whereas adolescents with low emotional insecurity exhibited positive synchrony with their mothers, no synchrony was observed when adolescent emotional insecurity was high. In conclusion, findings of the present study illuminate the patterns of RSA synchrony among parents and adolescents and highlight a link between adolescent emotional insecurity and attenuated mother-adolescent physiological synchrony.