Is anyone surprised by this?

This is from an article in today's Toronto Star:

"Remember the whiny, insecure kid in nursery school, the one who always thought everyone was out to get him, and was always running to the teacher with complaints? Chances are he grew up to be a conservative.

"At least, he did if he was one of 95 kids from the Berkeley area that social scientists have been tracking for the last 20 years. The confident, resilient, self-reliant kids mostly grew up to be liberals."

Here's the rest of the article.