Final answer:
Conscientiousness, a Big Five personality trait, is correlated with higher GPAs and more lucrative careers, characterized by qualities such as self-discipline and achievement-striving.
Step-by-step explanation:
The personality factor within the Big Five personality traits model most associated with higher paying careers and higher GPAs is conscientiousness. This trait is characterized by competence, self-discipline, thoughtfulness, and achievement-striving, making individuals who score high on conscientiousness more likely to be hardworking and dependable. A wide array of research, including studies by Noftle & Robins (2007), has established a significant positive correlation between conscientiousness and academic success. While grit and perseverance have also been shown to be powerful predictors of success, exceeding even talent or IQ, conscientiousness within the Big Five framework is the personal characteristic most closely linked to academic and career achievements.