The cues (3 × 3 cm) indicating which task had to be performed were a circle superimposed on a triangle for the round/angular task and a heart with vertical straight line for the symmetry task. Assigned response keys were “1” in case of a symmetrical or angular object and “9...
Conversely, in the R-Stroop task, the participants are instructed to touch the colored button that matches the meaning of the central word. There are 2 conditions; one is color-meaning congruence, the “neutral” condition, and the other is color-meaning incongruence, the “interference” ...