To be fair, the Stanford marshmallow study is itself not stupid. It is the way that it is reported that often leaves me frustrated. In the 1960s and ’70s, Stanford psychologists conducted a series of studies in which researchers placed a marshmallow (or another treat) in front of a child. They told him that he would receive a second treat if he could wait for 15 minutes while the researchers left the room. Follow-up “marshmallow” studies revealed that the children who could wait longer tended to be more “successful” than those who did not. Unfortunately, this is the kind of narrative people with attention-deficit/hyperactivity disorder (ADHD) know too well, and it is the kind of test they often “fail.” ADHD and self-control is a big deal.