QUOTE

Compared to self-identified liberals and conservatives, libertarians showed 1) stronger endorsement of individual liberty as their foremost guiding principle, and weaker endorsement of all other moral principles; 2) a relatively cerebral as opposed to emotional cognitive style; and 3) lower interdependence and social relatedness.
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Results.
Table 3 shows that libertarians scored lower than the other two groups on agreeableness, conscientiousness, and extraversion. They scored low (similar to conservatives) on neuroticism, and they scored quite high (similar to liberals) on openness to experience....
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Results.
Table 3 shows that libertarians score the lowest of any group on empathizing, and the highest on systemizing (also see Figures 3 and 4). In fact, libertarians are the only group that scored higher on systemizing than on empathizing.