“…The verbal/performance IQ (VIQ/PIQ) discrepancy initially used to screen for NLD (Rourke et al, 1971; Rourke & Telegdy, 1971) was suggested to be a less clear indicator in younger children (Rourke et al, 1973) and may occur in fewer than one third of older children identified as having NLD (Drummond, Ahmad, & Rourke, 2005; Pelletier, Ahmad, & Rourke, 2001). Nonetheless, diagnostic criteria defined by Rourke and colleagues, often including a VIQ/PIQ discrepancy, are still widely used in studies of the NLD population (Bloom & Heath, 2010; Forrest, 2004; Galway & Metsala, 2011; Keller, Tillery, & McFadden, 2006; Petti et al, 2003; Semrud-Clikeman, Walkowiak, Wilkinson, & Christopher, 2010). …”