“…Subsequent research partially corroborated these results, establishing that symptoms of SCT, as rated by parents and teachers, emerged as a separate, third factor when entered into analyses that included ratings of inattentive and hyperactive-impulsive symptoms of ADHD (Becker, Langberg, Luebbe, Dvorsky, & Flannery, 2014;Garner, Marceaux, Mrug, Patterson, & Hodgens, 2010;Lee, Burns, Snell, & McBurnett, 2014;Willcutt et al, 2014). A recent meta-analysis, considering 23 independent studies including 19,000 participants has confirmed that SCT constitutes a factor distinct both from the ADHD inattentive and hyperactive-impulsive symptom dimensions (Becker et al, 2016).…”