What facets of openness and conscientiousness predict fluid intelligence score?

The aim of this study was to investigate the relationship of fluid intelligence (gf) with trait Openness and Conscientiousness. A total of 2658 participants completed the NEO PI-R [Costa Jr., P. T. & MCrae, R. (1985). Revised NEO Personality Inventory and Five-Factor Inventory Professional Manual. Odessa, FL: Psychological Assessment Resources] and the GMA: Abstract test of cognitive ability [Blinkhorn, S. F. (1985). Graduate and Managerial Assessment Manual and User Guide. Dorchester: Dorset Press]. Correlational analysis showed that only the Ideas and Actions sub-facets of Openness were positively correlated with gf. Order, Self-Discipline and Deliberation sub-facets of Conscientiousness were negatively correlated with gf. Regressions showed that the sub-factors of each of the traits accounted for 5% of the total variance in gf. These findings are discussed in an attempt to explain how the relationship between Openness, Conscientiousness and gf may have developed.