A significant main effect of Group [F(2,59) = 4.792, P<.05], Test [F(3,58) = 10.511, P <.000] and Response [F(2,59) = 410.149, P<.000] was found, indicating a higher amplitude for the controls compared to the dyslexic readers. However, this was due entirely to higher amplitudes for errors, which were highest for T2 and lowest for T1 in both groups. A Group × Response × Test Time interaction [F(7,54) = 25.094, P<.000] indicated the highest gap between the ERN and CRN amplitude sizes at T2 and the lowest at T1 in the dyslexic readers. See Table 5 and Figure 2 for means and SDs.
