Why are less educated people so naive?

This isn't meant to be offensive but people who don't pass high school or go to college, tend to be more naive and believe everything the media shoves down they're throat. I know one drop out who voted for Obama because she thought he would truly stop all war (which still hasn't happened) and I know many other people who are naive in general. College educated people usually aren't like this. Why is this?
Why are less educated people so naive?
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