"Personality traits such as Agreeableness and Conscientiousness, which are widely related to positive outcomes such as better mental health ... may also have darker sides in that they can lead to destructive and immoral obedience. ... It may be that a significant share of human suffering stems from personality dispositions that are not necessarily intrinsically antisocial. On the contrary, some traits that often have negative interpersonal consequences, such as low impulse control, may in some extreme circumstances benefit others, such as when someone jumps into a river and risks his life to save a stranger."