The interactions involving group × trial n congruency, group × trial n − 1 congruency and the three way group × trial n congruency × trial n − 1 congruency interaction failed to reach significance (for all, p > 0.33).
Learning, measured as the difference between RTs Stroop effects obtained in the first and third blocks, did not correlate in either age group with either age [Younger: r (16) = −0.046, p = 0.857; Older: r (15) = −0.421, p = 0.092], or education [Younger: r (16) = −0.015, p = 0.951; Older: r (15) = −0.453, p = 0.068], although these correlations showed a trend in the older group.