“…Dynamic aphasia is a distinct language disorder characterised by reduced propositional speech despite well-preserved core language skills (i.e., repetition, reading, naming, comprehension; Luria, 1970Luria, , 1973. This disorder has been documented in both neurodegenerative conditions (e.g., Esmonde, Giles, Xuereb, & Hodges, 1996) and focal lesions (e.g., Bormann, Wallesch, & Blanken, 2008;Costello & Warrington, 1989;Raymer, Rowland, Haley, & Crosson, 2002), including individuals following stroke (e.g., Crescentini, Lunardelli, Mussoni, Zadini, & Shallice, 2008;Gold et al, 1997). Several accounts for dynamic aphasia have been proposed that suggest the disorder is due to a breakdown in the process of translating internal speech into overt speech (Luria, 1970(Luria, , 1973, a failure in verbal planning (Costello & Warrington, 1989), an inefficient semantic search strategy (Gold et al, 1997), an inability to generate verbal and non-verbal responses (Raymer et al, 2002), and an inability to select one idea from amongst multiple competing ideas (Robinson, Blair, & Cipolotti, 1998;Robinson, Shallice, & Cipolotti, 2005).…”