Figure 6.

Performance on the two-tone discrimination task using a protocol with a reference frequency (1000 Hz) presenting the first and second tone in an interleaved manner across trials. Performance in trials in which the reference was presented first (Ref first, filled bars) and in trials in which the reference was presented second (Ref second, empty bars). Bars denote the median of participants' percentage correct. Error bars denote IQR. Controls' performance was more affected by the reference than Dyslexics' performance (Condition × Group interaction; Mann–Whitney test for interaction between Reference position and Control vs Dyslexics, z = 3, p < 0.005).