“…Thus, our findings suggest that as child ADHD symptoms increase, both dyad members are less likely to respond to their partners' affiliative behaviour with an affiliative gesture. Such findings extend previous work on the interpersonal behaviours of children (e.g., Di Blas, 2007;Di Blas, Grassi, Luccio, & Momentè, 2012;Markey et al, 2005;Pennings et al, 2014;Sodano & Tracey, 2006;Thijs, Koomen, Roorda, & ten Hagen, 2011), and show that during interactions, children influence and are influenced by the interpersonal behaviours of their mothers. Past work has examined how a child's behaviour profile impacts complementarity.…”