Figure 9. Scatterplots plotting individual parameter estimates against performance IQ.

Maximum likelihood estimates contained within the posterior for each participant’s mean drift-rate across difficulty levels (v.mean), boundary separation (a), non-decision time (ter), difference in drift-rate between difficulty levels (v.diff), and starting point (z/a), plotted as a function of performance IQ (PIQ), for the motion coherence task (left column) and direction integration task (right column). Typically developing children are plotted in grey and children with dyslexia are plotted in blue.