I am not; see my reply to niceguyanon.

EDIT: I see the point you are trying to make though, that psychopaths not only lack empathy, but also a large amount of rationality. I agree with this and in fact it has been shown that in terms of logic problems and so on, pscyhopaths are just as rational as normal people i.e. not at all.

The point I'm trying to make is that the presence of empathy can certainly do a lot to destroy psychopathy. This is supported by the study you linked.