Okay, so I have only met one child who exhibited all the early signs that they could develop into a psychopath.
Its a big stretch, so I'll explain properly.
From the youngest age, she was scarily cold, manipulative and callous. One by one, every single child in the class got bullied. The bullying was sophisticated and calculated from a very young age.
Before anyone assumes childhood trauma, there simply was none. The parents were like angels. They were intelligent, gentle people. Frequent church attendees. Committee members, volunteers. An accountant and a teacher.
Eventually my daughter came under the bullying, and it was cruel psychologically damaging torture involving being imprisoned against her will, with a cohort of terrified handmaidens who did the bully's every command.
To the outside eye, this child was an angel, but with maybe a glint in the eye. But the cold manipulation was sonething I'd never seen in kids that young.
What's funny is that no-one talked about it until you'd have a coded conversation. They'd admit it, then the story would unfold of the terror their child had gone through.
One of my friends outside school had known the family in the pre-school years. When I mentioned (without names) what had happened to my daughter, she guessed who it was, as she knew which school this child had gone to. She eas ashamed to admit ste had mentally thought of this child as "Evil X".
I might get bollocking for this, but I'm telling it as it is. Yes of course she may have grown out of it, who knows. But it was pretty spooky.