... In line with the latter findings, previous work with the dataset used in the present study also found decreases in effortful control from age 10 to 16 (Atherton, Zheng et al., 2019;Atherton, Lawson et al., in press). Considering these recent findings, the current consensus among many researchers is that a ''self-regulatory dip" occurs from late childhood to late adolescence (De Fruyt et al., 2006;Klimstra et al., 2009;Soto & Tackett, 2015;Soto et al., 2011;Tackman, Srivastava, Pfeifer, & Dapretto, 2017;Van den Akker et al., 2014). From late adolescence to young adulthood and beyond, people are expected to resume the well-established, mean-level increases in self-regulatory traits that are consistent with the maturation principle (Bleidorn, Kandler, Riemann, Angleitner, & Spinath, 2009;Blonigen, Carlson, Hicks, Krueger, & Iacono, 2008;Damian, Spengler, Sutu, & Roberts, 2018;Helson & Moane, 1987;Murphy et al., 1999;Roberts et al., 2003;Roberts et al., 2006;Robins, Fraley, Roberts, & Trzesniewski, 2001;Van den Akker et al., 2014). ...