Generally speaking, shorter is better. Sixty seconds, for example, for some really exciting activity is likely to be too long—with the kids not being able to come back down from the excitement. Remember, we are using these exciting prizes as a way to teach self-regulation under conditions of excitement. Now, banked prizes can be much longer. For instance, students may be banking their smaller wins to “buy” a bigger activity, such as a wearing pajamas and slippers to school on a Friday.