The facts are in. Viewers of Fox News are the most misinformed of any other viewer of cable news. And it turns out they like it that way.

Author Chris Mooney has written a book entitled "The Republican Brain: The Science of Why They Don't Believe in Science."

In it the author explains the findings of seven different studies and what they tell us about how viewers of Fox News think or, more often than not, choose not to think.

Here Alternet offers a description of the book's findings:

In June of 2011, Jon Stewart went on air with Fox News’ Chris Wallace and started a major media controversy over the channel’s misinforming of its viewers. “Who are the most consistently misinformed media viewers?” Stewart asked Wallace. “The most consistently misinformed? Fox, Fox viewers, consistently, every poll.” 

Stewart’s statement was factually accurate, as we’ll see. The next day, however, the fact-checking site PolitiFact weighed in and rated it “false.”In claiming to check Stewart’s “facts,” PolitiFact ironically committed a serious error—and later, doubly ironically, failed to correct it. How’s that for the power of fact checking? 

There probably is a small group of media consumers out there somewhere in the world who are more misinformed, overall, than Fox News viewers. But if you only consider mainstream U.S. television news outlets with major audiences (e.g., numbering in the millions), it really is true that Fox viewers are the most misled based on all the available evidence—especially in areas of political controversy. This will come as little surprise to liberals, perhaps, but the evidence for it—evidence in Stewart’s favor—is pretty overwhelming.

the article then goes on to itemize and evaluate the studies that Mooney used in his book.

I will spare you all of that, though if you are interested I invite you to click the Alternet link or purchase the book, and will instead offer you the article's summation: 

In summary, then, the “science” of Fox News clearly shows that its viewers are more misinformed than the viewers of other stations, and are indeed this way for ideological reasons. But these are not necessarily the reasons that liberals may assume. Instead, the Fox “effect” probably occurs both because the station churns out falsehoods that conservatives readily accept—falsehoods that may even seem convincing to some liberals on occasion—but also because conservatives are overwhelmingly inclined to choose to watch Fox to begin with. 

At the same time, it’s important to note that they’re also disinclined to watch anything else. Fox keeps constantly in their minds the idea that the rest of the media are “biased” against them, and conservatives duly respond by saying other media aren’t worth watching—it’s just a pack of lies. According to Public Policy Polling’s annual TV News Trust Poll (the 2011 run), 72 percent of conservatives say they trust Fox News, but they also say they strongly distrust NBC, ABC, CBS and CNN. Liberals and moderates, in contrast, trust all of these outlets more than they distrust them (though they distrust Fox). This, too, suggests conservative selective exposure. 

And there is an even more telling study of “Fox-only” behavior among conservatives, from Stanford’s Shanto Iyengar and Kyu Hahn of Yonsei University, in Seoul, South Korea. They conducted a classic left-right selective exposure study, giving members of different ideological groups the chance to choose stories from a news stream that provided them with a headline and a news source logo—Fox, CNN, NPR, and the BBC—but nothing else. The experiment was manipulated so that the same headline and story was randomly attributed to different news sources. The result was that Democrats and liberals were definitely less inclined to choose Fox than other sources, but spread their interest across the other outlets when it came to news. But Republicans and conservatives overwhelmingly chose Fox for hard news and even for soft news, and ignored other sources. “The probability that a Republican would select a CNN or NPR report was around 10%,” wrote the authors. 

In other words Fox News is both deceiver and enabler simultaneously. First, its existence creates the opportunity for conservatives to exercise their biases, by selecting into the Fox information stream, and also by imbibing Fox-style arguments and claims that can then fuel biased reasoning about politics, science, and whatever else comes up. 

But at the same time, it’s also likely that conservatives, tending to be more closed-minded and more authoritarian, have a stronger emotional need for an outlet like Fox, where they can find affirmation and escape from the belief challenges constantly presented by the “liberal media.” Their psychological need for something affirmative is probably stronger than what’s encountered on the opposite side of the aisle—as is their revulsion towards allegedly liberal (but really centrist) media outlets. 

And thus we find, at the root of our political dysfunction, a classic nurture-nature mélange. The penchant for selective exposure is rooted in our psychology and our brains. Closed-mindedness and authoritarianism—running stronger in some of us than in others—likely are as well. 

But nevertheless, it took the emergence of a station like Fox News before these tendencies could be fully activated—polarizing America not only over politics, but over reality itself.

I think understanding what is laid out in this article, and book, is vitally important as we move forward in this country.

Simply put Fox News has been incredibly, and possibly irrevocably, damaging to our politics, our ability to seek compromise, and the future of this nation.

If ever there were a clearer case of blatant treason I have certainly never seen it.

It is damaging the psyche of our citizens in ways that may have long term, and potentially devastating, effects on generations to come.