“…Initial research on PNS synchrony has largely focused on parent–infant/toddler dyads (Palumbo et al., 2017), and more recently, among parent–child/adolescent interactions (e.g., Amole et al., 2017; Han et al., 2019; Li et al., 2020; McKillop & Connell, 2018; Oshri et al., 2020; Roman‐Juan et al., 2020; Suveg et al., 2019; Woody et al., 2016). Among adults, PNS synchrony has focused primarily on romantic couples (e.g., Helm et al., 2014).…”