The aim of this study was to assess the measurement model of a Spanish version of the Mach IV Scale (Christie, 1970b), used to measure Machiavellianism, and its relation with the Self-Monitoring Scale (Snyder & Gangestad, 1986). 346 undergraduate students (70 males and 276 females) filled in both scales. The results of confirmatory factor analyses showed a four-factor structure to be the most adequate model for the Mach IV, with the following factors: Positive Interpersonal Tactics, Negative Tactics, Positive View of Human Nature, and Cynical View of Human Nature. These results are not in accordance with the original factor structure but are consistent with other authors' findings. A structural model between Machiavellianism and self-monitoring was tested, showing statistically significant paths between interpersonal tactics and one self-monitoring subscale.
