“…Treatment of sentence comprehension using a mapping therapy approach has revealed significant cross-modal generalization effects with improvements in untrained sentence production, supporting the view of shared processing for sentence production and sentence comprehension at the functional level (Byng, 1988;Byng, Nickels, & Black, 1994;Jones, 1986;Nickels, Byng, & Black, 1991;Schwartz et al, 1994, Figure 1c). The reverse effect with improvements in sentence comprehension after mapping treatment in sentence production has also been described (Harris, Olson, & Humphreys, 2012;Weinrich, Boser, Mccall, & Bishop, 2001). However, contradictory results have also been observed-namely, patients lacking cross-modal generalization, after treatment of mapping deficits both in comprehension (e.g., Berndt & Mitchum, 1997;Mitchum et al, 1995;Nickels et al, 1991) and in production (Rochon, Laird, Bose, & Scofield, 2005;Rochon & Reichmann, 2003).…”