This chapter explores the conceptual relation of intelligence to personality, and reviews empirical research on the relation of intelligence to other traits. Intelligence is widely considered to occupy the apex of a hierarchy of more specific abilities that are all related to each other. Personality can be described at three distinct levels that include: traits, characteristic adaptations, and life stories. The Big Five personality dimensions include: extraversion, neuroticism, agreeableness (versus aggression), conscientiousness (versus impulsivity), and sociopolitical orientation. In pursuing research on intelligence and personality, one methodological advance should be adopted as often as possible, namely, the use of large samples and structural equation modeling to perform analyses of latent, rather than observed, variables. Very few studies have examined non-linear relations or interactions. Many factors may moderate the association of intelligence with other personality traits.