I disagree amp psychosis is a negligible factor in this case. Do you know for sure that someone prone to psychosis already can't be much more sensitive to amp psychosis? That guy I was talking about above can trigger an episode just by smoking weed, last time he tried MDMA he ended up stabbing his brother a few hours into the roll. Granted that was on 200mg so yes a big dose, but still, I think you can't really predict the outcome with anything approaching certainty. That's just my opinion though, I have nothing to base this on except for that one example