I'm not willing to fork out for the study, but there's a nice summary in this LA Times article.
It's of course a very narrow, simple test, but the results aren't all that surprising - liberals tend to put more thought into a problem, take a little longer to find a solution, and are right more often (2.2 times more often, in this case).
And conservatives tend to be more, ahem, "knee-jerk" in their responses...
I just finished reading a quite entertaining thread on the subject. One which demonstrated the point quite well, in fact.
Actually, I'm not totally sure why I'm amused by this, as opposed to saddened. It's another indicator that all those unthinking "WMDs in Iraq" and "think of the chilluns!" sheep out there may be biologically incapable of change.
An especially scary thing when it's within our grasp to cause the effective end of the world.