"First, moral rebels generally feel good about themselves. They tend…

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https://www.pbs.org/newshour/science/why-some-people-are-willing-to-challenge-bad-behavior-despite-personal-risk
"First, moral rebels generally feel good about themselves. They tend to have high self-esteem and to feel confident about their own judgment, values and ability. They also believe their own views are superior to those of others, and thus that they have a social responsibility to share those beliefs.

Moral rebels are also less socially inhibited than others. They aren’t worried about feeling embarrassed or having an awkward interaction. Perhaps most importantly, they are far less concerned about conforming to the crowd. So, when they have to choose between fitting in and doing the right thing, they will probably choose to do what they see as right.

The orbitofrontal cortex (in green on this brain that is facing to the left) looks different in moral rebels. Dorling Kindersley via Getty Images
Research in neuroscience reveals that people’s ability to stand up to social influence is reflected in anatomical differences in the brain. People who are more concerned about fitting in show more gray matter volume in one particular part of the brain, the lateral orbitofrontal cortex. This area right behind your eyebrows creates memories of events that led to negative outcomes. It helps guide you away from things you want to avoid the next time around – such as being rejected by your group.

People who are more concerned about conforming to their group also show more activity in two other brain circuits; one that responds to social pain – like when you experience rejection – and another that tries to understand others’ thoughts and feelings. In other words, those who feel worst when excluded by their group try the hardest to fit in.

What does this suggest about moral rebels? For some people, feeling like you’re different than everyone else feels really bad, even at a neurological level. For other people, it may not matter as much, which makes it easier for them to stand up to social pressure."