The concern I have is perhaps more subtle and more tied to ongoing treatment and treatment adjustment (e.g., dosing modifications, decisions to continue vs. discontinue the stimulant due to weighing adverse effects vs. benefits, etc.). Since attentional dysfunction lies on a continuum and since the use of stimulant medication to target this symptom is the goal of the treatment, then I think these decisions should emerge from the initial and continuing interactions between the prescribing provider and patient. By saying, essentially, 'well...we will send you to a psychologist who will then render a yes/no decision on whether you 'have' this 'disease' (after a one-time meeting with you) and then dichotomize our treatment plan into 'if you have it you get meds, if you don't then you don't get meds'--I think that this is a suboptimal approach. There also, as far as I can tell, no magic testing battery or results that reliably sort people into the 'have ADHD' vs. 'don't have ADHD' camps. So, from what I can tell in listening to people who know this literature and practice best...you're basically doing in depth interview, observation, and differential diagnosis which--I would argue--may be best done as a longitudinal enterprise over the course of knowing, interacting with, and treating the patient (and observing results). I mean, I get that prescribing providers wouldn't necessarily have 'the time' to do the in depth interviewing and would need to farm that out to non-prescribers---that's cool and makes sense. I just am not a big fan of the patient saying 'I have ADHD and need meds' being sent to a psychologist to essentially 'give permission' for them to receive the meds with the perception that they're going to employ some sort of specific assessment-related sorcery to 'make the diagnosis' after a single encounter. The other thing I'd say is that I've almost never seen (I can't remember seeing) the answer being 'no...this patient does not have ADHD'...if it happens, it rarely happens. Which has the practical upshot of rendering the entire process ceremonial and a complete waste of time and resources.