Figure 1.

(a) Inhibitory control index. (b) Mean reaction time in the experimental (n = 16) and control groups (n = 16). “Pre” and “Post” refer to the test performance of participants before and after real training/no training period, respectively. Error bars represent 1 standard error ± the mean. Asterisks indicate the level of significance of t-tests (two-tailed). * p < 0.05, ** p < 0.01.