“…Unlike ADHD-I symptoms, CDS symptoms have shown null or inverse associations with hyperactivity-impulsivity symptoms observed in the predominately hyperactive (ADHD-H) or combined (ADHD-C) presentations of ADHD (Barkley, 2014;Becker, 2021;Becker et al, 2018;Lee et al, 2014;Wåhlstedt & Bohlin, 2010), further underscoring that CDS and ADHD are dissociable constructs. However, this association is not universal, and CDS has demonstrated positive associations with hyperactivity-impulsivity symptoms among children, adolescents, and college students, though of a smaller magnitude than inattentive symptoms (e.g., Creque & Willcutt, 2021;Jarrett et al, 2017;Smith & Suhr, 2021;Willcutt et al, 2014). Although the two are distinct, ADHD and CDS cooccur at rates between 39% and 59% (Barkley, 2014).…”