Some quick Googling turns up: http://www.drtomascp.com/uploads/PersonalityIntelligence_IJSA_2005.pdf http://www.drtomascp.com/uploads/PersonalityIntelligence_I

Some quick Googling turns up: http://www.drtomascp.com/uploads/PersonalityIntelligence_IJSA_2005.pdf http://www.drtomascp.com/uploads/PersonalityIntelligence_IJS... Which seems to provide some (weak) evidence against that: "The hypothesis of a significant correlation between various Big Five personality traits and intelligence test scores was only partially supported. Only Conscientiousness was significantly related to psychometric intelligence, correlating with BRT scores. It is worth noting that the correlation was negative, indicating that higher conscientious participants tended to have lower gf." I'm far from an expert though, so I can't say how good that study is.