you can take what’s called a QB test. That’s an objective and empirical computer driven measurement of a person’s ability to focus and how much they fidget. So you can measure how much inattentivity and hyperactivity someone has as separate dimensions.
You absolutely can, but the problem is that you can’t know if those metrics are really caused by “ADHD” or one of many other possible causes.
The whole idea here is that current evidence suggests that we are almost certainly currently filing a variety of disparate conditions under “ADHD” because we have no good way to determine what “ADHD” actually is.
