I didn’t see this SNP being discussed so started a new thread. I was reading the list of possible personality traits thinking, yeah sort of, then number 5 “worse performance under stress”! Wow, yes. I have had friends say things like “you sure mess up under pressure”. I could be one of the top students in class but at test time I panic and can’t think too good.
Yes I am the same but we usually cope and cover
Try extra magnesium before tests? Your body’s baseline requirement for it may be higher than average at normal times. And stress flushes it out, so you may have a magnesium deficiency at those times.