I modified my main post with some more evidence in support of my theory which I'm posting here so you can see it as a response.
Professors in humanities that identify as Republican range from 6 to 11 percent.
Social Sciences 7 and 9 percent
2% of English professors are Republican.
Meanwhile 18% of social scientists are Marxists.
This evidence leads me to believe that Academics self select to be liberal and that people with a conservative mindset do not find academia appealing for whatever reason. The reason I rule it has little to do with intelligence of the groups is the prevalence of Marxism amongst academics. Intelligent people that use evidence to reason about their beliefs wouldn't be Marxist.
I don't think social scientists are Marxist in perhaps the sense you understand it. Social scientists don't want to overthrow the bourgeosie so much as they interpret social systems through the machinery of gender, race, and social class. Gender, race, and social class are absolutely necessary to understand contemporary social structures.
Professors in humanities that identify as Republican range from 6 to 11 percent.
Social Sciences 7 and 9 percent
2% of English professors are Republican.
Meanwhile 18% of social scientists are Marxists.
This evidence leads me to believe that Academics self select to be liberal and that people with a conservative mindset do not find academia appealing for whatever reason. The reason I rule it has little to do with intelligence of the groups is the prevalence of Marxism amongst academics. Intelligent people that use evidence to reason about their beliefs wouldn't be Marxist.
http://www.nytimes.com/2016/05/08/opinion/sunday/a-confessio...