"Conservatism and cognitive ability are negatively correlated. The evidence is based on 1254community college students and 1600 foreign students seeking entry to United States'universities. At the individual level of analysis, conservatism scores correlate negatively withSAT, Vocabulary, and Analogy test scores. At the national level of analysis, conservatism scorescorrelate negatively with measures of education (e.g., gross enrollment at primary, secondary,and tertiary levels) and performance on mathematics and reading assessments from the PISA(Programme for International Student Assessment) project. They also correlate withcomponents of the Failed States Index and several other measures of economic and politicaldevelopment of nations. Conservatism scores have higher correlations with economic andpolitical measures than estimated IQ scores."
"Jost et al.'s (2003) meta-analysis confirms that severalpsychological variables predict political conservatism. The listincludes death anxiety; system instability; dogmatism;intolerance of ambiguity, low openness to experience, anduncertainty; need for order, closure, and negative integrativecomplexity; and fear of threat and loss of self-esteem."
-Lazar Stankov, "Conservatism and cognitive ability", Intelligence, 37, (2009) 294–304 : https://www.researchgate.net/publication/222682950_Conservatism_and_cognitive_ability
"Jost et al.'s (2003) meta-analysis confirms that severalpsychological variables predict political conservatism. The listincludes death anxiety; system instability; dogmatism;intolerance of ambiguity, low openness to experience, anduncertainty; need for order, closure, and negative integrativecomplexity; and fear of threat and loss of self-esteem."
-Lazar Stankov, "Conservatism and cognitive ability", Intelligence, 37, (2009) 294–304 : https://www.researchgate.net/publication/222682950_Conservatism_and_cognitive_ability