During the World War II period, he designed the Sixteen Personality Factors (16PF) Questionnaire. The 16PF was one of the first standardized tests (following a previously outlined specific format and procedures) to measure personality (Milite, 2001). Cattell's main goal was to investigate universal aspects of personality. Cattell, together with colleagues of different nationalities, was entrusted with the task of studying personality traits in different cultures. Cattell believed that personality could be assessed entirely by human characteristics: creativity, authoritarianism, altruism, and leadership. The 16PF came out in 1949. Since its inception, the 16PF has undergone four revisions; the latest version dates back to 1993, the 16PF5, (Cattell & Mead, 2008). The 16PF is still widely used and is generally used to evaluate normally well-adjusted people (Milite,