FIGURE 3.

Topographic scalp distribution of the change in P3 amplitude (spectrum scale: blue to red) during the flanker task (top) and switch task (bottom) is illustrated for the intervention group (left) and wait-list group (right). As shown, P3 amplitude was greater in the intervention group at posttest only for the conditions that required the greatest amount of executive control across both tasks as denoted by the greater amount of red depicted in the electrophysiological plots representing brain function.