The Sociopath Next Door: ... Though sociopathy seems to be universal and timeless, there is credible evidence that some cultures contain fewer sociopaths than do other cultures. Intriguingly, sociopathy would appear to be relatively rare in certain East Asian countries, notably Japan and China. Studies conducted in both rural and urban areas of Taiwan have found a remarkably low prevalence of antisocial personality disorder, ranging from 0.03 percent to 0.14 percent, which is not none but is impressively less than the Western world's approximate average of 4 percent, which translates to one in twenty-five people.
In this Salon interview, the author attributes this group difference to cultural factors. Her answer is rather odd considering that in the book she describes personality, and sociopathy specifically, as roughly 50 percent heritable. As usual, we're allowed to admit that things like g and personality have a genetic component, but not allowed to entertain the possibility of group differences in distributions.
Is there the same level of sociopathy in other cultures?
No. In East Asian countries, China and Japan in particular, there is substantially less sociopathic behavior observed. It seems to me that the only explanation for that would deal with overall cultural attitudes. In the East, individual winning is not considered the appropriate goal. The culture is more group-oriented. A sociopath born in such a culture might learn to behave appropriately the way one might learn table manners. They might not have a conscience, but because sociopaths need to fit in, the behavior might be tamped down a bit.
In the past I've heard it claimed that the (putative) dearth of E. Asian "geniuses" is due to group differences in personality factors like sociopathy or psychoticism, rather than IQ. I think the topic of group differences in personality (whether cultural or genetic) is under-investigated.