I would guess that if we did a study using the usual Big Five, a single personality trait would drive most of the variance, the one called “agreeableness”. Unfortunately this is not actually one trait, we just treat it like it is; there’s no particular reason to think that conformity is correlated with empathy, for example, yet they are both considered “agreeableness”. (This is similar to the problem with the trait “Belief in a Just World”, which includes both the belief that a just world is possible and the belief that it is actual. An ideal moral person would definitely believe in the possibility; but upon observing a single starving child they would know that it is not actual. Hence should they be high, or low, in “Belief in a Just World”?)
I would guess that if we did a study using the usual Big Five, a single personality trait would drive most of the variance, the one called “agreeableness”. Unfortunately this is not actually one trait, we just treat it like it is; there’s no particular reason to think that conformity is correlated with empathy, for example, yet they are both considered “agreeableness”. (This is similar to the problem with the trait “Belief in a Just World”, which includes both the belief that a just world is possible and the belief that it is actual. An ideal moral person would definitely believe in the possibility; but upon observing a single starving child they would know that it is not actual. Hence should they be high, or low, in “Belief in a Just World”?)