“…Siegel and Ryan (1988), for example, found that children with learning disabilities performed significantly more poorly than typically developing children on grammatical error correction tasks. The current results add to the growing literature of identifying language difficulties in children using signed language: BSL (Herman, Rowley, Mason, & Morgan, 2014;Marshall et al, 2014;Mason et al, 2010;Morgan, Herman, & Woll, 2007;Woll & Morgan, 2012) and ASL Quinto-Pozos et al, 2013, Quinto-Pozos, Forber-Pratt, & Singleton, 2011. These findings suggest that reliable assessment tools may need to be developed for specific language backgrounds, such that nonnative signers' scores should be compared to nonnative norms and native signers' scores should be compared to native norms (Herman, Holmes, & Woll, 2001;Mann & Marshall, 2012).…”