If you read the paper you'll find out that the liberty-enhancing and liberty-reduction indexes depend on what types of petitions the faculty signs. So if you sign a petition for free trade and against protectionism (a Club for Growth thing), to oppose tax hikes (the so-called Death Tax; yes they do use that term in the paper), to warn against the risks to Social Security (i.e. want to cut benefits) then you're for liberty. But if you sign a petition against the Bush tax cuts, to increase the minimum wage, or to show concern about global warming (they call it climate change; I know) then you're against liberty.
I'm proud to be against liberty then. By the way, we beat other heterodox depts, like UMass Boston and Amherst, right after the U, and the New School and UMKC that don't register at all.
PS: I just noticed that they are color blind. The liberty hating lefties should have been blue not red!