“…This is further compounded by the existence of additional needs in approximately 30-40% of deaf children (Lesinski et al, 1995;Fortnum et al, 2002;Filipo et al, 2004) although this number is confounded by differing definitions of what constitutes these needs (McCracken & Turner, 2012). Among the most frequently observed needs are learning disabilities, visual impairment, specific learning disability, dyslexia, cerebral palsy and emotional/behavioral problems (McCracken, 1998 It has been established from research on hearing children that specific language impairment and dyslexia, as well as disorders that primarily affect non-linguistic cognition, including Down Syndrome, Autism, Williams Syndrome, can impact on vocabulary acquisition and phonological production (Condouris, Meyer & TagerFlusberg, 2003;Luyster, Lopez & Lord, 2007;Scarborough, 1990;Schwartz, 2009).…”