“…Children using AAC tend to exhibit various grammatical difficulties. Multiple reasons for the presence of these issues have been posited in the literature (e.g., Soto, 1999;Sutton, Gallagher, Morford, & Shahnaz, 2002;Sutton, Soto, & Blockberger, 2002;Trudeau, Sutton, Dagenais, De Broeck, & Morford, 2007). The two most relevant to the current study are the modality-specific hypothesis and the translation hypothesis.…”