3. Gambling/feedback task—Duration: 10 minutes During this procedure, participants will see 2 squares, side-by-side on the monitor in front of them. Each square will have a money amount displayed inside of it. Sometimes the squares show 5 cents, and sometimes they show 25 cents. The task is simply to choose one of the squares on each trial, either the one on the left or the one on the right. After a delay of about one second, the participant will be told if he or she won or lost the amount of money inside the square he or she chose. If the selected square turns GREEN that means the participant won the amount of money shown inside the square. If the chosen square turns RED that means the participant lost the amount of money shown inside the square. At the same time, the unselected will also turn either green or red, to inform the participant how much he or she would have won or lost if the other square had been selected.