But there are also plenty of drugs that have the same effect on everybody but only make sense to take if you have a disorder. For example, anyone who takes insulin will experience a lowering of blood sugar levels regardless of whether that person is diabetic. The same is true with a diuretic. If you don't have heart disease or kidney disease, there are very few cases where you would want to take a diuretic. But if you did, you would be urinating constantly, even though you are not ill.
T hat's a very helpful distinction.
N ot quite. Our group did a lot more work studying the effects of other medications besides methylphenidate. And we also spent time researching other disorders, including obsessive compulsive disorder and childhood schizophrenia. We were given an evening a week that we could run the MRI machine here. Over the last four or five years, we have identified about 200 children who have absolutely no problems with attention, learning, or behavior.