Average children are self- regulated, yet they are more free than the ADD child, who being more dependent on his environment, actually operates on the basis of less free will. They are required for the organization of behavior across the span of time. They direct behavior toward the future rather than the present. They are aimed at the maximization of future consequences. They permit us to conform the environment to our goals.
ADD is a disorder of response inhibition and executive function, of the ability to wait.
The areas affected are thought to be involved in response, attention and sensitivity to reward. That sugar is somehow involved is part of the folklore. Defiance, oppositional behavior, argumentative. Heredity is the best explanation of the facts. The neurochemical balances which lead to the syndrome of symptoms we call ADD should not be seen only as a pathology, but a genetic characteristic like height, weight, and intelligence, which can have outliers.