Fig. 1.

Experimental time course of the dot-probe task. a Depicts the time course of 2 example trials of the dot-probe task. 1 Start button appeared within colored bar of the lower third of the touchscreen until touched or for 5 s. 2 An example of whole face stimuli appeared for 100 ms or 1,000 ms. 3 The dot-probe replaced aggressive stimulus in the congruent position until touched or for 10 s. 0.25 mL of diluted grape juice was dispensed and a ding sound occurred if the dot-probe was touched correctly. Otherwise, a buzz sound occurred and a time penalty of 750 ms was added if the dot-probe was touched incorrectly (i.e., background touched) or did not touch the screen at all. 4 Each trial was followed by a blank screen for an inter-trial interval of 750 ms. 5 Start button reappeared until touched or for 5 s. 6 Example of scrambled stimuli (scrambled versions of stimuli in panel 2) presented for 100 ms or 1,000 ms. 7 The dot-probe replaced the neutral stimulus in the incongruent position until touched or for 10 s. 8 750 ms intertrial interval. b Depicts the location of the dot-probe in relation to the whole face stimuli. The filled white circle illustrates the congruent condition, where the dot-probe replaces the aggressive stimulus. The dashed lined circle illustrates the incongruent condition, where the dot-probe replaces the neutral stimulus.