Should You Plan for Your Next Incarnation?

I found the article online: When Your Child Is a Psychopath.

But other children display callous and unemotional traits even though they are raised by loving parents in safe neighborhoods. Large studies in the United Kingdom and elsewhere have found that this early-onset condition is highly hereditary, hardwired in the brain—and especially difficult to treat.

So they are saying that callousness is inherited from loving parents? I'm aware that Mendel's genetics allow for apparent quirks, though constrained by well-defined rules. But is this really what is meant, or is it simply a claim made in the absence of any (to the authors' minds) plausible alternative?