My former best friend has a socio/psycho son (far too early to determine), met him when he was 2yo, and he is increasingly more defiant ,physically and emotionally hostile (especially to his slightly older sister), and just all around proving from an early age that he will never bow before authority. I suggest psychopathy because his behavior is dramatically contrasting of his 3 older sisters, and even his younger brother (who should, in theory, be the spitting image of him as that is the likely role model). They have very well behaved kids, as well behaved as a house hold of 6 can be, but his influence is gradually, over the last year or two, beginning to effect everyone else in the household. It is almost sad to see, really, as their family was once the ideal family. Now it is starting to unravel, all by the hand of a small child socio/psycho. And, in that light, it is quite beautiful.
My father said he knew I was a bit off ever since he took me to see Jaws as a kid, and I rooted for the shark.
My ex's dad says that at age two he was already blaming his baby sister (in her crib) for breaking stuff. He wreaks chaos when he visits his charming, wealthy, WASP-y family. They say the minute he walks into their home, they brace for the worst, live in fear of his rage. You would probably like him . lol