That’s not useful in a scientific context. Kind of like trying to come up with a test to see if someone is “crazy”. “Crazy” is not a diagnostic term, you wouldn

That’s not useful in a scientific context. Kind of like trying to come up with a test to see if someone is “crazy”. “Crazy” is not a diagnostic term, you wouldn’t split crazy and non-crazy people in a scientific context. What you would do is, for example, consider a group of people who have experienced psychotic episodes, or people who experience persecutory delusions. Those terms, while not perfectly precise, are at least repeatable and well-understood.