Will the Lunatics Be in Charge of the Asylum?

I recall another Berkeley psychology study (discussed here, there, and there) that purported to show that whiny, insecure kids in nursery school grow up to be conservatives and the confident, self-reliant kids grow up to be liberals. It's plausible that John Edwards health plan will be based on such research.

On the other hand, there is another study (mentioned at TCS) that purports to show that:

The investigators found that adults with higher psychopathy scores had marked differences as 3 year olds, being significantly less fearful/inhibited and more stimulus seeking/sociable than those adults who had lower psychopathy scores.

Hmmmmm… Does this mean the lunatics will be running the asylums?

On the gripping hand, piling correlation upon correlation can lead to absurd results. For example, richer people are more likely to own their homes and are more likely to live in richer states but the top states in home ownership rates tend to be poor.