“…Poor interference control has been argued to be one of the core deficits of ADHD (Barkley, 1997) and many studies have indeed found support for an interference control deficit, although findings across studies are not fully consistent (for meta-analyses, see Lansbergen, Kenemans, & van Engeland, 2007;Mullane, Corkum, Klein, & McLaughlin, 2009;Schwartz & Verhaeghen, 2008;van Mourik, Oosterlaan, & Sergeant, 2005). The mixed findings may be explained by several factors, such as the task used, the calculation of the interference effect, and the heterogeneity of ADHD.…”