As long as the diagnosis of ADD is based on little more than subjective responses to questionnaires, there will be controversy surrounding the accuracy of the diagnosis. We have taken pains to develop a more objective evaluation system for ADD, and have published our methods and the results of our research in the medical literature. (For all practical purposes, ADD and ADHD are synonymous terms.)
ADD evaluation at the neuropsychiatry clinics is based on a neurological and psychiatric evaluation, medical history, information from various sources, and cognitive testing. It includes a "test dose" of either methylphenidate or amphetamine to evaluate the patient's response to a small dose of medication. As it happens, measurable psychostimulant effects occur about 45 minutes following the first oral dose. If the patient is evaluated in the morning, he or she might be given a test dose and then return after lunch to be re-evaluated.
Even the most careful initial evaluation, however, doesn't necessarily predict how the patient is going to do on a stimulant over the long-term. Patients usually need to compare the effects of different stimulant medications. Evaluation of stimulant side effects over time can be made by using a computerized symptom checklist that we have developed, and that different teachers can use, or else by using computerized tests of attention and executive function from this website.