During the period of World War II, he designed the Sixteen Personality Factors Questionnaire (16PF). The 16PF was one of the first standardized tests (following a specific format and procedures described previously) to measure personality (Milite, 2001). Cattell's main goal was to study the universal aspects of personality. Cattell and his colleagues of different nationalities were tasked with studying personality traits across cultures. Cattell believed that personality could be assessed entirely by human characteristics: creativity, authoritarianism, altruism, and leadership. The 16PF was released in 1949. Since its creation, the 16PF has undergone four revisions; the latest version dates from 1993, the 16PF5 (Cattell & Mead, 2008). The 16PF is still widely used and is typically used to assess normally well-adjusted individuals (Milite,