Actor–partner model of physiology, negative affect, and depressive symptoms in mother–child dyadic interactions.

Mother–child interactions can be emotionally charged, particularly when mothers experience difficulties with depression. Further, variation in the tone of such interactions has been linked to variation in youth functioning. Yet, little is known about the role of emotion regulatory processes during mother–child interactions. This study examined negative affective transactions between mothers and youth across 5-min conflict and fun-activity planning discussions, in relation to depressive symptoms and maternal and youth respiratory sinus arrhythmia (RSA). Maternal depressive symptoms predicted more negative affect. Maternal and youth RSA interacted with maternal depressive symptoms to predict both overall affect and the stability of affect across time. The beneficial effects of youth RSA were stronger, but maternal RSA weaker, in the face of elevated maternal depression. [ABSTRACT FROM AUTHOR]