Drugs that increase serotonin, dopamine, and norepinephrine can improve top-down control and are used to treat ADHD by promoting hyperfocus and outcome-anticipating processing.

“So bulimics have an issue with impulsivity. Um and therefore drugs that can increase serotonin and sometimes these drugs that increase dopamine and norepinephrine levels in the brain allow for more top- down control. And that's also why they're used to treat ADHD and attention deficit disorder. These drugs tend to create a hyperfocus and tend to push the brain and general mode of processing into one in which you think if this then that if this then that. So anticipating outcomes.”