“…Positive behavioral co-regulation reflects the extent to which parent and child display positive, reciprocal, and harmonious patterns of behavior during shared dyadic interactions, and is uniquely important for child adjustment (MacPhee et al, 2015). Young children from dyads that show more positive behavioral co-regulation exhibit more self-regulated behavior (Bardack, Herbers, & Obradović, 2017;Lunkenheimer, Hamby, Lobo, Cole, & Olson, 2020;Scholtes, Lyons, & Skowron, 2021;Suveg et al, 2016), and respond with greater RSA withdrawal during individualized laboratory challenges (Armstrong-Carter, Sulik, & Obradović, 2021). However, it remains unclear whether positive behavioral co-regulation is related to parentchild physiological synchrony.…”