“…This may be one reason for the numerous studies which utilised the veridicality approach (see Burgess, Alderman, Evans, Emslie, & Wilson, 1998;Chaytor, Schmitter-Edgecombe, & Burr, 2006;Hoskin, Jackson, & Crowe, 2005;Manchester, Priestley, & Jackson, 2004;Mitchell & Miller, 2008;Odhuba, van den Broek, & Johns, 2005;Ready, Stierman, & Paulsen, 2001;Semkovska, Bedard, Godbout, Limoge, & Stip, 2004;Van der Elst, Van Boxtel, Van Breukelen, & Jolles, 2008;Wood & Liossi, 2006). Despite this extensive research, the ecological validity of traditional measures of executive functioning tends to remain in the low to moderate range, with Pearson's correlations ranging from .24 to .50 (Burgess et al, 1998;Chaytor et al, 2006;Manchester et al, 2004).…”