“…Executive functions (EFs) are mental control processes that enable self-control necessary for the attainment of a future goal (Denckla, 1996;Lezak, 1995;Pennington & Ozonoff, 1996;Welsh & Pennington, 1988). EF refers to cognitive functions mediated by the prefrontal cortex (Becker, Isaac, & Hynd, 1987;Cabeza & Nyberg, 2000;Fuster, 1997;Reitan & Wolfson, 1994;Rezai et al, 1993;Tranel, Anderson, & Benton, 1994), such as inhibition, working memory, cognitive flexibility or set-shifting, planning, and verbal fluency (Ozonoff, 1997;Pennington & Ozonoff, 1996;Reader, Harris, Schuerholz, & Denckla, 1994;Weynandt & Willis, 1994). Multiple studies have identified EF deficits in preschoolers, children, adolescents as well as adults with autism (Geurts, Verte´, Oosterlaan, Roeyers, & Sergeant, 2004;Hill, 2004;Ozonoff, 1997;Pascualvaca, Fantie, Papageorgiou, & Mirsky, 1998;Russell, 1997;Shu, Lung, Tien, & Chen, 2001;Turner, 1999a; but see Griffith, Pennington, Wehner, & Rogers, 1999;Ozonoff & Strayer, 1997;Russell, Jarrold, & Hood, 1999).…”