Figure 1.

Computerized cognitive task. (A) Switch task: visual attention and task switching. The task comprised three sections. (-1-) First section, numbers (non-switch) had to be clicked in ascending order. (-2-) Second section, letters (non-switch) from A to Z had to be clicked alphabetically. (-3-) Third section, number and letters (switch) had to be clicked alternately in ascending order (i.e., 1,A,2,B,3,C). (B) Corsi block-tapping task: visual-spatial attention. A sequence of blocks lit up and gradually increased in length up to six blocks. Sequences had to be repeated. (C) 2-back task: working memory updating. Fruits and vegetables were displayed on a computer screen. A predefined key had to be pressed when the current image was the same as the image two trials back. (D) Flanker task: inhibitory control. Congruent flankers: click right key; incongruent flankers: click left key; no-go (circle): no reaction.