Conservatives Refuse to Believe "Facts" The most upsetting and alarming research? Probably Brendan Nyhan and Jason Reifler's backfire effect study. In that, the political scientists took two groups of volunteers and gave them the Bush administration's prewar claims that Iraq was a threat and had weapons of mass destruction.
One group was given a refutation — the comprehensive 2004 Duelfer report that concluded that Iraq did not have weapons of mass destruction before the United States invaded in 2003. Thirty-four percent of conservatives told only about the Bush administration's claims thought Iraq had hidden or destroyed its weapons before the U.S. invasion, but 64 percent of conservatives who heard both claim and refutation thought that Iraq really did have the weapons. The refutation, in other words, made the misinformation worse.
This "backfire" effect only worked on conservatives. Even when they varied the source of the refutations, it made no difference—corrections from the New York Times and Fox News both caused conservatives to believe the lies even harder. In other words, objective truth is dead, observable reality is a fairy tale, etc. Conservatives Have An Entirely Different Moral Code This should bring you down, a little bit. Jonathan Haidt, a psychologist, wrote a lengthy anthropological investigation into why people vote for Republicans. It's not the Thomas Frank "they are distracted by #$%$" explanation, though it is related: they have different cultural standards of ethics and morality! Liberals and college students define morality as "how we treat each other," conservatives attach more significance to "supporting essential institutions, and living in a sanctified and noble way." Liberals recognize fairness and care as important moral virtues, conservatives add to that loyalty, respect for authority, and duty. The educated moral relativism worldview is fundamentally incompatible with the way like 50% of America thinks, and stereotypes about out-of-touch elitist coastal democrats are basically correct.