I can’t find it now, but there was an experiment where people were given a skill game to try and let alone in a (recorded) room, then self reported their score.

When the experimenter casually mentioned that this rocking chair over here was his late grandmother’s, he was just keeping it there until he could move it to his home, because he felt her presence in it, nobody lied about their score.

So, Batman and granny ghosts.

According to the article it's not really about the character itself but rather introducing an unusual, offbeat element seems to make groups of people more empathetic.

44% of people who ceded their place to the pregnant woman in the study reported not even noticing the Batman. So this is some kind of subconscious effect on the crowd I guess.

Maybe we can have a violent clown threaten to blow up another train

iirc more or less that shitty people don't return their shopping carts and not shitty people do

idr the exact wording or alleged conclusions