“…Regarding age, studies of adolescents and older children (e.g., 10 years and above) were more likely to find that high CU traits were associated with reduced emotional responsiveness than studies with younger children (Northam & Dadds, 2020). When examining the results of studies with adolescent/older child samples, peripheral physiological measures may consistently demonstrate an association of reduced responsiveness and high CU traits, regardless of whether it was measured at baseline (e.g., de Wied et al, 2012;Thomson & Centifanti, 2018), for activity (e.g., Fanti et al, 2016;Isen et al, 2010;Perlstein et al, 2021) and for reactivity (e.g., Anastassiou-Hadjicharalambous & Warden, 2008;Dackis et al, 2015;Fanti et al, 2016;Kimonis et al, 2008Kimonis et al, , 2017Muñoz et al, 2008). Behavioral measures of emotional responsiveness are less consistent in studies investigating adolescents, with some showing negative associations (e.g., Hwang et al, 2016;Loney et al, 2003), while others showing no association (e.g., de Wied et al, 2012).…”