Argumentativeness is conceptualized as a personality trait which predisposes an individual to recognize controversial issues and to advocate or refute positions on them. In a multivariate study with 166 male and 120 female students, the relationships between scores on the Argumentativeness scales and the facet and domain scales of the Revised NEO Personality Inventory (Form S) were analyzed. At the facet level, scores on Tendency to Approach arguments and Argumentativeness correlated significantly with scores on Assertiveness and Openness to Ideas, and scores on Tendency to Avoid arguments correlated significantly with scores on Self-consciousness and Assertiveness. At the domain level, scores on Openness to Experience correlated significantly with those on Tendency to Approach arguments and with the Argumentativeness scale and scores on Extraversion correlated significantly with Tendency to Avoid arguments and the Argumentativeness scale.