Right-wing authoritarianism correlates most strongly with low openness and introspection.

Evidence

The “Big Five.” Goldberg administered the RWA Scale and his 235-item measure of the “Big Five” personality factors to 503 Oregon students (Goldberg and Rosolack, 1991). RWA scores correlated — . with Factor V, which has been interpreted as Intellect or Openness and Culture. It also correlated . with Factor III, Conscientiousness, and . with Factor I (Surgency/Extraversion). … Professor Goldberg was kind enough to send me the 235 RWA-item correlations. Only 3 of these exceeded .30: Highs said they were not “philosophical,” were “conforming,” and were “non-introspective.” Another 20 items had correlations in the .20s; but only (not) “introspective” and (not) “broad-minded” exceeded .24. — Bob Altemeyer, The Authoritarian Specter, 573