Problem: Guided by prior findings that intelligence shows modest links to university grades while Conscientiousness is a consistent positive predictor and Extraversion is typically unrelated, the present study examines how cognitive ability and personality jointly relate to academic performance in Australian undergraduates. We focus on the unique and combined contributions of general intelligence, Conscientiousness, and Extraversion to GPA, and explore whether self regulatory tendencies help explain why Conscientiousness predicts achievement more strongly than the other traits. Our goal is to provide a concise, higher precision replication and extension of past work in a contemporary university context, clarifying which individual differences matter most for students' academic success. Can you concise and be creative and modify as if modified by human. No AI content or words. Need Assignment Help?